How is everyone finding the battery life. Personally, I am finding it just plain horrible. I'm not sure what the issue is specifically but either something is draining it or it is just really that bad, in which case I will return it. I can't get a day's worth of moderate use out of it. It seems to be at most half of what I get from my note 10.1 and they aren't set up any differently. I've tried some of the basics like turning down the screen brightness (which annoys me), turning off the smart stay (but why have a feature you can't use), tweaking email checking settings, turning off samsung sync, turning off bluetooth (don't use it), and locations services. Is anyone else seeing this as an issue and does anyone have any additional suggestions for me to try?
Thanks in Advance
I get about two days between charges on mine. I get a decent amount of usage on a daily basis between email, Facebook, and candy crush. I even have Google Now running. How many charge cycles have you been through?
05GT said:
I get about two days between charges on mine. I get a decent amount of usage on a daily basis between email, Facebook, and candy crush. I even have Google Now running. How many charge cycles have you been through?
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If by charge cycles you mean fully discharging the phone until it shuts off, I haven't done that, but could give it a shot. It has gone down to 10% several times though.
No battery problems here. I wouldn't blame charge cycles, if they have any effect at all, it is minor. If I were you, I would do a factory reset, followed by an exchange if the reset doesn't fix it.
I have smart stay on , backlight on auto, and take no extra precautions for battery savings.
DownTFish said:
How is everyone finding the battery life. Personally, I am finding it just plain horrible. I'm not sure what the issue is specifically but either something is draining it or it is just really that bad, in which case I will return it. I can't get a day's worth of moderate use out of it. It seems to be at most half of what I get from my note 10.1 and they aren't set up any differently. I've tried some of the basics like turning down the screen brightness (which annoys me), turning off the smart stay (but why have a feature you can't use), tweaking email checking settings, turning off samsung sync, turning off bluetooth (don't use it), and locations services. Is anyone else seeing this as an issue and does anyone have any additional suggestions for me to try?
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Click to collapse
Can you please post some screen shots of your battery life at the end of a typical cycle? It will help with comparisons by giving us more details on your running apps, screen-on display times, etc. Also, what wakelocks do you have? Use BetterBatteryStats or Wakelock Detector from the Play store for that. This info might help us to identify just how much drain is related to rogue apps or the general battery life itself.
sefrcoko said:
Can you please post some screen shots of your battery life at the end of a typical cycle? It will help with comparisons by giving us more details on your running apps, screen-on display times, etc. Also, what wakelocks do you have? Use BetterBatteryStats or Wakelock Detector from the Play store for that. This info might help us to identify just how much drain is related to rogue apps or the general battery life itself.
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Click to collapse
Thanks. Just downloaded BetterBatteryStatus. I'll let it run for a bit and see what comes up. I'll post what I came up with with screen shots from it. Thanks for pointing me in a direction.
Also, it'd help to know how many hours "just plain horrible" is.
I'm not delighted by the battery life I'm seeing, I'm finding I want to charge every night, and that I can easily consume 15% / hour or more even without the screen turned up past 20-25%. (watching video off the NAS in the house.)
Then again, this is the first LCD display I've been able to read in full sunlight, and that's remarkable to me. I often wind up with full sun in the morning when I get up, and am delighted that if I did charge overnight I can use the device even then.
The battery needs some initial "training".
Charge fully on the first and run it all the way down to nearly zero, and fully charge again.
DO NOT interrupt the initial charge.
Battery life is great here after 5 cycles running it to 1% and recharging full at first it was draining faster but now I can watch 4 hours of netflix and still have 25% left nice thing is that the battery charges superfast so no worries
DownTFish said:
If by charge cycles you mean fully discharging the phone until it shuts off, I haven't done that, but could give it a shot. It has gone down to 10% several times though.
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10% is just fine, for purposes of calibrating the battery meter. Preferable actually. You shouldn't actually drain the device until shutdown. There are safeguards that are supposed to ensure the battery voltage does not drop too low (its not actually zero when the phone shuts down). However, in reality these safeguards are not always failsafe and I've seen plenty of cases on various Android devices where letting the battery drain to shutoff renders the battery unable to take a charge (below the minimum threshold voltage). Sometimes, letting the battery charge overnight will bring the battery back. Otherwise, you are pretty screwed, as the only remedy would be a battery meter with a boost function.
In any case, the battery meter is not very accurate, even under the best of circumstances, so letting it drain to 10% is plenty accurate enough. Then let it charge to 100%, and let it sit at full for a while, as fully saturating the battery takes extra time.
---------- Post added at 11:15 AM ---------- Previous post was at 11:08 AM ----------
That said, its hard to say what "moderate use" means. Everyone uses their devices differently. If you are playing intensive games, downloading files, heavy internet usage, it can drain the battery much faster than other activities. And the number of hours of screen-on time is key. So the idea of getting some battery stats and screenshots, is a good one.
I haven't been tracking screen-on time myself. But I find the battery to be decent. I use it a good amount in the evening (don't bring it to work) mostly for reading and web browsing. I have brightness on 40-50% usually (sometimes less, if the room is darker). The battery was just under 40% after 2 nights of use (maybe 40 hours after the last charge). Just guessing, but maybe 3 or 4 hours of screen on time?
Some online reviews mentioned the battery life is not as good as some other comparable devices (such as Nexus 7 and iPad Mini). Not surprising, since the Note 8 has a faster processor and higher resolution screen than either. And so far, battery life is not amazing, but seems comparable or better (better drain while idle) than my old HTC Flyer tablet. So for me, thats just fine.
I got about 4 hours screen-on time on my first battery cycle with heavy usage. Was playing games, movies, internet browsing, etc. My second and third cycles were better, giving me 5-6 hours screen-on time with moderate to heavy usage. Didn't really play any movies, but did play a fair amount of games and stuff.
On those later cycles my screen-on drain represented about 85% of my overall drain. This leads me to say that you can expect 4.5-6.5 hours of screen-on time with the Note 8, depending on usage. Keep in mind that I keep wifi always on, disabled bluetooth/auto-sync/smart stay, stopped some running apps like Maps and Factory Test, and kept brightness down to about 15% of the max setting.
Screen is definitely the big drain here, and these results lead me to believe that even with root and apps like Greenify I would not get much better results. Looks like any further battery savings will need to come from a custom kernel and custom rom (unless maybe you root and then underclock/undervolt using a third party app like Voltage Control or SetCpu). Anyone else have similar (or different ) results?
mingkee said:
The battery needs some initial "training".
Charge fully on the first and run it all the way down to nearly zero, and fully charge again.
DO NOT interrupt the initial charge.
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dumbest thing wrote in this thread probably. You do not need to train or do a full charge. How come people still believe that nonsense in 2013 ??
Bagbug said:
dumbest thing wrote in this thread probably. You do not need to train or do a full charge. How come people still believe that nonsense in 2013 ??
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:what:...XDA is for fun and for sharing; not for putting others down. Please be a little more respectful towards forum users when you post in the future. If you disagree with something then just explain so we can all learn together.
I am assuming the Note 8 has a lithium based battery. I couldn't confirm it though. The below link has some tips for how to care for different type of batteries. Useful reading.
http://www.techrepublic.com/blog/tablets/how-and-when-to-charge-your-tablet-battery/814
Sent from my GT-N5110 using xda app-developers app
Although the battery life is of concern to me, the fact it charges via a micro USB input rather than propriatry cable alieviates that worry (looking at you Apple). I dont think I go anywhere where there isnt a charger available thanks to the amount of devices that use them.
Bagbug said:
dumbest thing wrote in this thread probably. You do not need to train or do a full charge. How come people still believe that nonsense in 2013 ??
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While his terminology might have been a bit clumsy, he is not completely incorrect.
The terminology of "training the battery" invokes the concepts of conditioning the old technology NiCad batteries to prevent memory effects, which are not a concern with Li ion batteries, which is what you seem to be referring to. Folks on XDA will often talk about conditioning or calibrating the battery, which can be a bit misleading (as often they have the behavior of the old NiCad batteries in mind when saying this).
However, it is true that the battery meter needs to be calibrated to be completely accurate. This calibration has no chemical effect on the battery itself (like it does with NiCad batteries) but simply effects how the current readings are displayed by the % battery meter on the device's screen. Without fully charging and draining the device, it doesn't have fully accurate "flags" associated the current to battery %.
http://batteryuniversity.com/learn/article/battery_calibration
Failure to calibrate the meter won't have a negative chemical effect, like failure to periodically condition a NiCad battery. And therefore it won't have an affect on the battery life. But properly calibrating will give you the most accurate % battery reading possible. The battery meter is not accurate out of the box, after a ROM flash, and an OTA may also reset the calibration.
As I've already mentioned in a previous response, I don't recommend draining the battery to shutoff. As doing so can lead to the battery no longer taking a charge, and the device no longer powering on. Its rare, but it does happen. Fully changing, then draining to 10% or so is enough. Full cycles are also not good for the long term life of the battery, although just doing it once every few months is still acceptable.
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kisrita said:
I am assuming the Note 8 has a lithium based battery. I couldn't confirm it though. The below link has some tips for how to care for different type of batteries. Useful reading.
http://www.techrepublic.com/blog/tablets/how-and-when-to-charge-your-tablet-battery/814
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Click to collapse
Pretty good link, thanks. And reinforces what I just said above.
Most any smartphone or tablet made in the past several years uses a Li ion battery. This confirms it: http://www.gsmarena.com/samsung_galaxy_note_8_0_n5100-5252.php
---------- Post added at 10:26 AM ---------- Previous post was at 10:21 AM ----------
hertsjoatmon said:
Although the battery life is of concern to me, the fact it charges via a micro USB input rather than propriatry cable alieviates that worry (looking at you Apple). I dont think I go anywhere where there isnt a charger available thanks to the amount of devices that use them.
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The charger for the Note 8 is 2 Amps, while most MicroUSB chargers (at least for phones and other small devices) are 1 Amp. Although this varies, and there are other tablet chargers that are also 2 Amps; but these are far less common than phone charges that just about anyone with a phone that isn't Apple will have.
What this means is that the 1 Amp charger will charge the Note 8 very slowly. I tried mine on a 1 Amp charger just once so far. Left it on for maybe an hour, and the charge only increased by a few percent.
So yes, you can charge with most MicroUSB chargers in a pinch. But it will be slow.
hertsjoatmon said:
Although the battery life is of concern to me, the fact it charges via a micro USB input rather than propriatry cable alieviates that worry (looking at you Apple). I dont think I go anywhere where there isnt a charger available thanks to the amount of devices that use them.
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Click to collapse
Don't get the physical plug of a charger confuse you - I believe this tablet needs a 2amp output from the charger, meaning just because your charger has the same end connection, it won't necessarily help you charge this battery. I've had my users come to me thinking their devices are defective because they somehow started charging their tablet with their Bluetooth headset charger.
Someone also mentioned the black wallpaper that might help with the battery consumption - I believe that is only helpful on AMOLED screens that Samsung has used on other devices.
I'm really still on the fence on keeping it after I bought this - I'm coming from a GT 7.7 which had excellent build quality,screen, and battery life. The loss of the AMOLED screen for both graphics and battery efficiency is bothering me. I put both up side by side and feel disappointed that Samsung couldn't just make a JB updated 7.7 with new CPU, 2GB RAM, and stylus with the same design and beautiful Super AMOLED Plus screen. It's not even the price - but just feeling like I'm getting a somewhat inferior device (in a few but important aspects) from the 7.7, when it's supposed to be an upgrade to the older device.
I've seen the news about an upgrade to the 7.7 possibly coming, but will it come with the stylus that is also important to me and the other software enhancements from the Note 8?
Bagbug said:
dumbest thing wrote in this thread probably. You do not need to train or do a full charge. How come people still believe that nonsense in 2013 ??
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Click to collapse
Funny thing happened on mine.
The battery was VERY BAD the second day, but it could play live streaming for two hours when the battery was 1%. As soon as the tablet went off due to depleted battery, I charged it until it went all the way until the "full battery" came up.
After that, the battery is much better now, so don't say anything "dumb" or any nonsense because it works.
rEVOLVE said:
Someone also mentioned the black wallpaper that might help with the battery consumption - I believe that is only helpful on AMOLED screens
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Click to collapse
That is correct, having a black background does not effect battery life on LCD screens.
On AMOLED screens, black pixels are actually not emitting light (while pixels displaying other colors emit light), which is why a black background will cause less battery drain than other colors.
On an LCD, the liquid crystal layer that depicts the colors is not itself a source of light. Its lit from the back, and the light intensity of the backlight is the same regardless of what color is being displayed. How much light is blocked or let though by the liquid crystal layer varies depending on their alignment (what color is being displayed). But this doesn't affect how bright the backlight is, anymore than pulling a window blind makes the sun burn less hydrogen.
Speedy Gonzalez said:
Battery life is great here after 5 cycles running it to 1% and recharging full at first it was draining faster but now I can watch 4 hours of netflix and still have 25% left nice thing is that the battery charges superfast so no worries
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Only four hours? My Nexus 7 averages about 10.5 hours of Netflix with 10% left. I wonder how other note 8's compare?
Sent from my Nexus 7 using xda premium
Related
Before we get an update (well if it will sort the problem...) I wonder if we could collect the best tricks and tips how to save battery life on Desire? Some of you have experience of apps and widgets that drain the battery fast, then we have the usual (turn of 3g, wifi, avoid white backgrounds etc).
What you think? Lets share what we found out!
- Turn off any auto-update for anything unless you really (really) need them
- Even if you really (REALLY) need auto-update, set auto-update period to longer interval (why do you want to get weather update every hour? just an example)
- Again, review your auto-update apps/widgets!!!
- Turn off GPS. Turn this on only when you are going to use sat nav app
- Turn off Wi-Fi. It is obvious, turn it on when needed and dont forget to turn off!
- Turn off Bluetooth, unless you want to use it (headphone???)
- Don't use task killer of any kind unless you really (REALLY) know what you are doing. Let Android OS take care of killing those inactive apps, Android is designed for this.
- Set your screen brightness as low as possible your eyes could use. Full brightness is really not necessary unless you want to show off to iPhone users
- Limit your home screen widgets, think if you really want to use to have "quick look". Otherwise you can just put icon shortcut, one click and there you go!
- Choose AMOLED friendly apps. Meaning, avoid any white or extreme bright UI / background colors. For example: The XDA Android app created by Tapatalk is AMOLED friendly compared to browsing via web, because it uses black color background. Find apps that you can customize the color
- Choose AMOLED friendly themes. I would replace the default HTC big clock that uses white color with other that uses black color.
That's for now
The first charge is important for the battery and your device too. The battery has to be charged long time, 12-16 hours first time to use all the chemicals it has. Some says that the polymer batteries don't need the first big charge but specialist's says it's good practise to do it with the LiPoly batteries too.
Note: it's best practise to wait until the battery reaches it's critical level (around 5%) before you start the first big charge. The first charge also calibrates your devices power meter.
Mastoid said:
The first charge is important for the battery and your device too. The battery has to be charged long time, 12-16 hours first time to use all the chemicals it has. Some says that the polymer batteries don't need the first big charge but specialist says it's good practice to do it with the LiPoly batteries too.
Note, that you have to wait until the battery reaches it's critical level (around 5%) before start the first big charge. The first charge also calibrates your devices power meter.
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Is this really really true? I hopefully will be getting a new Desire tomorrow (for exchange) and when I received my previous one, I didn't drain the battery and then charge for 12 hours. I would not mind doing it if it really improves the battery life but I've seen conflicting articles/opinions about this whole 12 hours charge thing
From HTC FAQ
http://www.htc.com/www/faqs.aspx?p_id=312&cat=80&id=127114
When I first receive my phone, do I need to charge the battery?
Your phone ships with a partially charged battery so it's suggested you charge your battery fully before first use. The battery is fully charged when the notification LED turns green.
It is recommended to charge the battery for 8 hours the first time to ensure that the battery has had time to recharge.
Note: It is recommended that you only use the charger and cable provided in the box your phone was shipped in.
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Click to collapse
HoneyBeFly said:
Is this really really true? I hopefully will be getting a new Desire tomorrow (for exchange) and when I received my previous one, I didn't drain the battery and then charge for 12 hours. I would not mind doing it if it really improves the battery life but I've seen conflicting articles/opinions about this whole 12 hours charge thing
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Click to collapse
Thanks for that although if I remember correctly on the Desire quick quide it says I need to charge it for 3 hours for the first time. Regardless, it insinuates that I shouldn't drain the battery before the first charge
Please try and read about how a li-ion battery works.
NiCd and NiMH need longer (and slow) initial charge(s). Because indeed the battery still needs to form. Usually 5 charges, but cheap ones reach max capacity after eg 15 charges.
This is NOT the case for li-ion batteries. They have max capacity as soon as they roll out of the factory. And they start degrading from that point.
Keeping the Desire charged longer has no use. Because as soon as the battery is full, the internal chip will cut off the charge. So you can just as well plug out your charger.
There are so many voodoo stories about batteries, even from manufacturers. Probably because each battery chemistry need different handling. Whereas li-ion batteries are actually much more easy. They don't last too long though :/
updates
Every now and then you get a notification of available updates to apps... anyone knows how this works and if it does drain the battery? Is there a way to turnthe update check off?
Can you try this:
http://androidcommunity.com/forums/f12/how-to-turn-off-application-upgrade-check-12723/
Let us know the result.
jannen said:
Every now and then you get a notification of available updates to apps... anyone knows how this works and if it does drain the battery? Is there a way to turnthe update check off?
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Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
Do we really need this since it's a Li-ion battery? I know Ni-Mh and Ni-Cad has memory effect, but not on the Li-Ion battery.
I was just wondering the same thing today....simply because there seems to be several different methods to do it. Some say charge 8 hours, turn off, charge and hour, unplug, turn on charge 10 minutes. Then other methods say to do something different....be nice to have an app to walk you through different methods so you know step by step your doing it right
I calibrated mine last night and I'm going to get about 18 hours if not more from it....before yesterday I was getting 9.
The ONLY other different I did was make some profiles on CPU but I cant imagine it would make that much of a difference. I bet its a mix of both
deonjahy said:
Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
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Click to collapse
That is to funny I was just saying to my wife the other day that I should make one of these programs seeing that there are none already. I hate having to manually kill my battery every night before I charge it again.
Is it needed? It depends on your school of thought, some say yes, some say no. All I know is that on the few devices I have had in the past, if I constantly plug them in to "top them off" then the battery never ends up lasting very long after a few months of doing that. So I am a believer in killing the battery before charging on devices like these.
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
All the battery calibration tools, are basically deleting the file... right?
Is it that hard to boot into recovery and wipe battery stats?
deonjahy said:
Could someone please develop a good app that would enable the battery to be drained as much as possible and to charge slower so we could all properly calibrate our batteries?
Click to expand...
Click to collapse
I think the second part has to do with hardware. The phones hardware just doesn't have trickle charge implemented and instead lets it drop back down to 90% then starts charging it again.
As for the second part, it came on our phones, even has a default widget. 4G
paulieb81 said:
That is to funny I was just saying to my wife the other day that I should make one of these programs seeing that there are none already. I hate having to manually kill my battery every night before I charge it again.
Is it needed? It depends on your school of thought, some say yes, some say no. All I know is that on the few devices I have had in the past, if I constantly plug them in to "top them off" then the battery never ends up lasting very long after a few months of doing that. So I am a believer in killing the battery before charging on devices like these.
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
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Click to collapse
Um... actually that is (by most accounts) bad for Li-Ion. You want to AVOID completely draining them. All of this stuff is more art than science, but I have way more often heard that completely draining LI batteries is bad. What kills them is the number of cycles they have been through (like -25 +25, -25 +25, -50 +50 would be a full cycle).
You do however want to give them a full up down cycle once in a while (maybe every 1-3 months) for calibration.
Then again, as I said, it is more art than science, and I have heard your method as being better, but the not draining argument seems to be the vast majority.
I'll try to do a little look-see and update this or repost if I find any stronger evidence.
the thing about my phone and battery that ALWAYS baffled me was i would plug it in at night be it at 10% or 22 i would leave plugged in while slept i would wake up unplug and look at battery percentage and it would be like 95.....no other phone has even unplugged and dropped 5 percent by doing nothing????
turn your brightness to 100% and change it so that it never turns off; use wifi tether and play a 720p movie at the same time; oc your kernel to it's highest stable frequency. it'll drain pretty quickly.
I know I might get flamed for this....
Apple suggests, with their laptops, to once a month or so, run the battery completely down. Then let the battery cool down for a little bit. Then give it a full, uninterrupted, overnight charge. I forget if they said to repeat this a second time, then you're good.
This is all from memory of me reading this a couple years ago or so, so our might not be verbatim. Their laptops use lithium ion technology...
(and they used to blow up and melt down too!) Lol!
Wrong word choice and misspelling courtesy of swype.
mykeldrip said:
the thing about my phone and battery that ALWAYS baffled me was i would plug it in at night be it at 10% or 22 i would leave plugged in while slept i would wake up unplug and look at battery percentage and it would be like 95.....no other phone has even unplugged and dropped 5 percent by doing nothing????
Click to expand...
Click to collapse
That's because the phone stops charging when it reaches 100%, and runs off of battery probably until it reaches in the low 90s, then charges again. You won't ever notice this because the light will always be green. However, you'll notice that unplugging it a few moments after it turns green, the battery will stay anywhere from 100%-98% for a while. At least on my phone it does.
Is there any way to make this program "auto run" during sleep so it can do everything it needs to do during the night charge (similar to quickpull for blackberry)
laydros said:
I think the second part has to do with hardware. The phones hardware just doesn't have trickle charge implemented and instead lets it drop back down to 90% then starts charging it again.
As for the second part, it came on our phones, even has a default widget. 4G
Um... actually that is (by most accounts) bad for Li-Ion. You want to AVOID completely draining them. All of this stuff is more art than science, but I have way more often heard that completely draining LI batteries is bad. What kills them is the number of cycles they have been through (like -25 +25, -25 +25, -50 +50 would be a full cycle).
You do however want to give them a full up down cycle once in a while (maybe every 1-3 months) for calibration.
Then again, as I said, it is more art than science, and I have heard your method as being better, but the not draining argument seems to be the vast majority.
I'll try to do a little look-see and update this or repost if I find any stronger evidence.
Click to expand...
Click to collapse
I am by no means an expert so if you find any reliable info on this and can link us to read, I would love to learn more. All I know is that it is commonly said to drain rechargeable batteries and that I have seen that topping them off very often does lead to battery life degradation.
Tyzing said:
Is there any way to make this program "auto run" during sleep so it can do everything it needs to do during the night charge (similar to quickpull for blackberry)
Click to expand...
Click to collapse
There is no need to fully drain the battery. Its purpose in calibration is to configure the software that is correlating voltage to percentage charged. That's all. Regarding the old Apple advice, that is doing the same thing. It will not affect the hardware.
Now, what WILL affect the hardware is charging itself. Every charge/discharge cycle will reduce the total capacity of the battery. This is why the EVO will not cycle on it's own until 10% discharged. It's improving the overall battery life by that restriction.
In short, you will save money overall by getting a higher capacity battery that you don't force to charge too often. Draining your battery does nothing but give you peace of mind and it only really needs recalibrating when it's total capacity has been reduced which isn't often. 3-6 months.
Sent from my PC36100 using XDA App
herbthehammer said:
I know I might get flamed for this....
Apple suggests, with their laptops, to once a month or so, run the battery completely down. Then let the battery cool down for a little bit. Then give it a full, uninterrupted, overnight charge. I forget if they said to repeat this a second time, then you're good.
This is all from memory of me reading this a couple years ago or so, so our might not be verbatim. Their laptops use lithium ion technology...
(and they used to blow up and melt down too!) Lol!
Wrong word choice and misspelling courtesy of swype.
Click to expand...
Click to collapse
Yeah except that's not a good idea, it will kill the weak cells.
I understand. Still think it would be useful if it would do the "juice until LED changes" method while sleeping though
paulieb81 said:
So the bottom line is if there is a desire for this, I may try to put an app together for it, as I know myself I am interested I just didn't think many others would be.
Click to expand...
Click to collapse
I'm interested!
Btw - what are the charging calibrations people are using? Are you seeing one working better than another?
Im a noob, so take what I say worth a grain of salt but yesterday I did the standard method where you fully charge...turn off...plug back in until led changes green and do it a few times.
I went from 9 hours to 17 hours with no other changes except a few profiles in setCPU.
I did this just last night so my results are fresh.
Tyzing said:
I calibrated mine last night and I'm going to get about 18 hours if not more from it....before yesterday I was getting 9.
The ONLY other different I did was make some profiles on CPU but I cant imagine it would make that much of a difference. I bet its a mix of both
Click to expand...
Click to collapse
A few SetCPU profiles is all it takes to see a dramatic increase in battery life, especially while screen off. If you disable it I bet whatever gain you think was from 'calibrating' it disappears.
When I got my one x roughly two weeks ago, battery life wasn't really that good. 8 hours max with a couple of hours of screen time. But I always calibrate my battery. When I got it I charged it for 8 hours then drained it then did the same thing for a whole week just using the phone till the battery runs out and then charge it for 5 hours... Now battery life is very good, EASILY last me through a whole day with moderate to heavy usage. Lots of tapatalk 2, browsing, messaging and emails. I'm also running ARHD rom so that also help but nonetheless battery calibration is important so do it people
Never calibrated or whatever, have excellent (for me) battery life.
I thought we got over this myth.....
OP, do you have some supporting evidence, or even logic, that shows that doing exactly what you shouldn't do with a li-po battery has a positive effect?. Have you A /B tested it against another handset where you treated the li-po battery as recommended? I.E, avoiding fully discharging it and preferably charge from around 50%.
I get up to 4 hours screen time and 4-5 days standby having treated the battery this way with just a handful of total discharges (obviously it not always possible to avoid)
farnsbarns said:
OP, do you have some supporting evidence, or even logic, that shows that doing exactly what you shouldn't do with a li-po battery has a positive effect?. Have you A /B tested it against another handset where you treated the li-po battery as recommended? I.E, avoiding fully discharging it and preferably charge from around 50%.
I get up to 4 hours screen time and 4-5 days standby having treated the battery this way with just a handful of total discharges (obviously it not always possible to avoid)
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Do I have evidence? No I didn't capture any screentshots or anything. This is from my personal experience I'm not here to prove to you anything, just sharing how my battery life is improving cause of battery calibration. My phone no longer display for example 25% then soon as I use it jumps to 19% like before. It decreases gradually and I get excellent battery life. Same thing with my I pad when is discharge it completely then recharge it, I see better battery life and better battery % display accuracy.
barondebxl said:
Do I have evidence? No I didn't capture any screentshots or anything. This is from my personal experience I'm not here to prove to you anything, just sharing how my battery life is improving cause of battery calibration. My phone no longer display for example 25% then soon as I use it jumps to 19% like before. It decreases gradually and I get excellent battery life. Same thing with my I pad when is discharge it completely then recharge it, I see better battery life and better battery % display accuracy.
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Li - po batteries do improve with the first few charge cycles but this has nothing to do with the fact you have run it flat. Doing so regularly will shorten the life of the battery. You stated that it had a positive effect but you have no comparison and it flys in the face of the laws of physics and chemistry. The point of my post was to make it clear to anyone who doesn't know better that it's bs and will be detrimental to battery life.
Though LiPo batteries don't like to be overly discharged, I'd stop short of saying that this is detrimental to your battery. LiPo batteries shouldn't be left at low voltage (dead) for long periods of time, but discharging it entirely and then recharging it is well within the designed specs of the battery. It's more the fact that they lose charge over time, and therefore leaving them dead which is considered their minimum safe voltage, will then allow them to drain further themselves over time to a point where it's detrimental. I suppose, though, a battery drained to 0% every single time is more likely to have a shorter life than a battery discharged only to 20% before recharging.
The Android system does calibrate the battery life, which is more of what you'd be doing, but you aren't going to get more battery life out of a battery by discharging it entirely, then charging it fully, it just doesn't work like that. LiPo batteries don't have issues with memory or needing to be discharged or charged to a certain point for optimum performance.
I 100% attribute bad battery life when you first get a phone to simply being you pulling it out and turning it on more than you normally would. It's nearly impossible, and damn near subconscious, but when you get a new toy, you're obviously going to pull it out to look at it, play with it, load every different app it has, etc, as well as doing the same when you show it to people. I think even if you think you didn't play with it a lot when you first got it, you likely still do. But that's just my opinion.
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
read that calibration not needed
AJerman said:
Though LiPo batteries don't like to be overly discharged, I'd stop short of saying that this is detrimental to your battery. LiPo batteries shouldn't be left at low voltage (dead) for long periods of time, but discharging it entirely and then recharging it is well within the designed specs of the battery. It's more the fact that they lose charge over time, and therefore leaving them dead which is considered their minimum safe voltage, will then allow them to drain further themselves over time to a point where it's detrimental. I suppose, though, a battery drained to 0% every single time is more likely to have a shorter life than a battery discharged only to 20% before recharging.
5
The Android system does calibrate the battery life, which is more of what you'd be doing, but you aren't going to get more battery life out of a battery by discharging it entirely, then charging it fully, it just doesn't work like that. LiPo batteries don't have issues with memory or needing to be discharged or charged to a certain point for optimum performance.
I 100% attribute bad battery life when you first get a phone to simply being you pulling it out and turning it on more than you normally would. It's nearly impossible, and damn near subconscious, but when you get a new toy, you're obviously going to pull it out to look at it, play with it, load every different app it has, etc, as well as doing the same when you show it to people. I think even if you think you didn't play with it a lot when you first got it, you likely still do. But that's just my opinion.
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The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
farnsbarns said:
The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
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I know what you mean. I usually get yelled out when I try to do that and help, haha.
farnsbarns said:
Li - po batteries do improve with the first few charge cycles but this has nothing to do with the fact you have run it flat. Doing so regularly will shorten the life of the battery. You stated that it had a positive effect but you have no comparison and it flys in the face of the laws of physics and chemistry. The point of my post was to make it clear to anyone who doesn't know better that it's bs and will be detrimental to battery life.
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It flys in the face of the laws of physics??!!!??? What the hell are you talking about? I'm talking about my battery life getting better and better cause of draining it and recharging it not the gravity of the moon or Einstein theories, relax.
farnsbarns said:
The dtremental effect will be minute, accepted, but there is certainly nothing to gain. That's what I wanted to make clear.
There is a lot of guesses portrayed as fact on here these days, as well as conclusions drawn from dubious experience with no control or comparisons. Just trying to combat this misinformation.
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LMAO, get out of your basement.
AJerman said:
I know what you mean. I usually get yelled out when I try to do that and help, haha.
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Yep, I just don't care if the truth means a fan of cereal box science gets their knickers in a twist. More than half of what gets posted now is erroneous guess work, assumptive, misleading noise that serves no purpose other than to dilute the factual helpful discussion.
I've never been much good at biting my lip.
farnsbarns said:
Yep, I just don't care if the truth means a fan of cereal box science gets their knickers in a twist. More than half of what gets posted now is erroneous guess work, assumptive, misleading noise that serves no purpose other than to dilute the factual helpful discussion.
I've never been much good at biting my lip.
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That's fascinating..... I wonder where that battery calibration thing started in the first place, I guess someone made that up just to mess with people right?
barondebxl said:
That's fascinating..... I wonder where that battery calibration thing started in the first place, I guess someone made that up just to mess with people right?
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For batteries that needed calibration? And as I said, a lot of people confuse calibrating the battery meter in the OS with calibrating the battery itself.
Read, learn: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
AJerman said:
For batteries that needed calibration?
Read, learn: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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Read this, point 2.
http://osxreality.com/2009/07/18/4-tips-to-extend-your-lithium-battery-life/
To all of you who say that using up your battery shortens it's life, I have just one thing to say: the phone will never let you fully discharge the battery. Approx. 3.5V at which the phone turns off is far from the voltage of fully discharging (and potentially damaging) the battery.
Sent from my HTC One X using xda premium
barondebxl said:
Read this, point 2.
http://osxreality.com/2009/07/18/4-tips-to-extend-your-lithium-battery-life/
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As I said, this has nothing to do with calibrating the battery, and everything to do with calibrating the battery meter in the OS, which, by the way, will never be off by HOURS, maybe by a couple of minutes. This only needs to be done once every however many cycles, that site says 30, but I wouldn't even bother doing it more than once every couple of months at the most as you likely won't see any real gain from doing so, and it IS theoretically bad to overly discharge your phone. Doing it once in a while won't damage anything, but doing it every cycle, or every day for a week or anything like that is excessive, unnecessary, and, as farnsbarns mentioned, can wear on your battery.
Battery meter calibration has been discussed on this message board countless times, and every time it's proven to be nearly pointless in real tests.
Edit: This is not to mention that I think a lot of batteries/phones have charging circuits built into them that allows them to properly check the battery level itself, meaning calibration of the OS isn't necessary. I could be wrong on this, but I'm pretty sure I've read about this before.
AJerman said:
As I said, this has nothing to do with calibrating the battery, and everything to do with calibrating the battery meter in the OS, which, by the way, will never be off by HOURS, maybe by a couple of minutes. This only needs to be done once every however many cycles, that site says 30, but I wouldn't even bother doing it more than once every couple of months at the most as you likely won't see any real gain from doing so, and it IS theoretically bad to overly discharge your phone. Doing it once in a while won't damage anything, but doing it every cycle, or every day for a week or anything like that is excessive, unnecessary, and, as farnsbarns mentioned, can wear on your battery.
Battery meter calibration has been discussed on this message board countless times, and every time it's proven to be nearly pointless in real tests.
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Nothing to do with battery calibration? Have you read the article? If you want accurates readings, you want your battery life to improve, you probably want to calibrate your battery. I've had the one x for almost two weeks and my phone doesn't jump from 50% to 42% randomly anymore cause I've calibrated the battery. If you want more reading : http://www.themobileindian.com/news/5547_How-to-calibrate-smartphone-battery
No one here said that it is something you need to do everyday, but when you get your phone I suggest doing it. Then once it's calibrated do it once a week or every other week.
AJerman said:
Edit: This is not to mention that I think a lot of batteries/phones have charging circuits built into them that allows them to properly check the battery level itself, meaning calibration of the OS isn't necessary. I could be wrong on this, but I'm pretty sure I've read about this before.
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they do have charging circuits I just read it, still you want accurate readings. Even my iPad sometimes displays wrong battery percentage when I don't let it discharge. Sometimes I charge it when it's at like 28% for example, let it fully charge but then it drains weirdly.
barondebxl said:
Nothing to do with battery calibration? Have you read the article? If you want accurates readings, you want your battery life to improve, you probably want to calibrate your battery. I've had the one x for almost two weeks and my phone doesn't jump from 50% to 42% randomly anymore cause I've calibrated the battery. If you want more reading : http://www.themobileindian.com/news/5547_How-to-calibrate-smartphone-battery
No one here said that it is something you need to do everyday, but when you get your phone I suggest doing it. Then once it's calibrated do it once a week or every other week.
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You are failing to listen to what I'm saying. I've read the article, and many others like it. There is no such thing as calibrating Lithium batteries, and it's a common misconception, so I have full faith that you can find countless web pages telling you you can. It comes from the old mindset of batteries that did need certain charge cycles (full discharge, full charge, etc) to maintain life.
Again, the only thing you calibrate when you run the battery all the way down is the OS's battery meter. Android shuts itself down automatically when battery voltage hits a level that is considered empty or dead, regardless of what the battery meter says, so that calibration gives you no more life out of your battery at all.
However, I think we all run down our phones to the point where they auto shutdown more than frequently enough to consider the battery meter calibrated very close at any given time. Battery meter calibration is more an issue on systems that stay plugged in frequently and don't often get discharged, this is usually with laptops used as a desktop replacement, not phones.
We aren't trying to be mean or anything, just trying to squash the continued misconception that calibrating the battery is possible or has any effect.
How to smart charge the Galaxy Note 2 battery
The way you charge your device is very important and it can affect your battery life a lot. Charging it wrong will make it drain quickly and the battery will also last less, requiring a replacement after 1-2 years of use.
To smart charge the Galaxy Note 2, you have to only plug it in when the battery is below the 10% level and never unplug it until it is 100% charged.
You should also know that when your battery reaches 10%, it will last longer than usual. To understand better, it will drain much slower from 10% to 0% than from 20% to 10%. So don’t panic if your battery level is low, because it can hold for a very long time, especially in standby mode.
Never use low quality chargers, because they can damage your battery hand even the device. Only use original Galaxy Note 2 chargers and try not to use the USB cable for charging your device. Always charge it in the wall socket, because the USB port power fluctuates and can damage the battery. Also it will charge much slower.
Battery maintenance
Usually the battery is the first smartphone component that dies, having a lower lifecycle. Though you can prevent this by taking care of it.
The best way to prevent it from getting damaged is to avoid pulling it from its socket. The battery has some golden pins that can scratch or get dusty, so if you pull it out and back in multiple times you can damage the pins.
In order to help the battery work the way it should, always make sure to clean the pins with a soft cloth whenever you pull it out. This way you will keep dust away from them.
When buying a new Galaxy Note 2 battery, make sure to get an original one, as other might have a lower battery life and can have a shorter lifecycle.
Increase Galaxy Note battery life by disabling features
The Samsung Galaxy Note 2 N7100 comes with tons as features, like we just said at the beginning. But nearly all of them are big battery eaters and you need to be careful when activating them.
The CPU and display drain a lot of battery, so make sure to setup the display to turn off faster. Also don’t keep it turned on when you don’t need it.
3G and 4G are the biggest battery drainers on a smartphone. You should only keep the 3G or 4G network activated when you use the internet actively. If you really need a permanent internet connection, then go for 2G, though this eats your battery too. The best way is to only connect to the internet when you need it.
Do not keep the WiFi,Bluetooth and GPS activated when you don’t use them. They can drain your battery very fast even in idle mode, so make sure to disable them when you don’t need them anymore.
Live wallpapers are also big battery drainers. They consume a lot of CPU and RAM resources and also use your display more intensively. So you should never choose a live wallpaper. The most battery-friendly wallpaper is a dark one, which doesn’t use any CPU resources and also doesn’t requires the display to be very bright.
You also have to take care what apps you install and always look at Settings > battery to see who drains the most battery. There are some apps than run continuously and prevent your device from getting into “Deep Sleep.” This is the standby mode that helps the device conserve very much energy. If an app prevents it from getting into this mode, you will notice a very low battery life.
Please let us know if you found other ways to increase the Galaxy Note 2 battery life. We are also curious for how long did you manage to get your device running between charges.
wow thanks mate quite a good one!
Thanks!
Also you should add that if you always need to be connected to internet then its better to keep connected through WiFi as it consumes less energy than using EDGE or 3G.
Sent from the rabbit hole.
Thanks it's useful
What?
No.
1. Deep charge cycles on a lithium battery accelerate the failure of the battery.
2. The device can determine the type of source it's plugged into, computer usb ports are safe.
3. Non branded chargers are safe if they are quality made. You just need to stick with quality and 2 amp/ short cables for decent charge times.
Sorry man, but those 3 things you listed are some pretty big misinformation that can easily be verified.
There's nothing "smart" about doing a deep discharge if your trying to preserve a 10 dollar battery.
After installing the new rom..I charge my battery full..then remove battery stats then drain full to zero for cycle.after complete ..I use smart charge method..that is .when my cell battery below to 10 something like 9 or 8 then I connect charger .and really it helps me alot
---------- Post added at 04:09 PM ---------- Previous post was at 04:07 PM ----------
Smart charge method is kinda usefull
purged363506 said:
What?
No.
1. Deep charge cycles on a lithium battery accelerate the failure of the battery.
2. The device can determine the type of source it's plugged into, computer usb ports are safe.
3. Non branded chargers are safe if they are quality made. You just need to stick with quality and 2 amp/ short cables for decent charge times.
Sorry man, but those 3 things you listed are some pretty big misinformation that can easily be verified.
There's nothing "smart" about doing a deep discharge if your trying to preserve a 10 dollar battery.
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+1
Deep charge cycles are for avoid "memory effect" and It apply to old Ni-Cd / Ni-MH batteries. Don't apply for modern Li-Ion battery. There is much more chance that the deep drain affect negatively the battery of a GN2.
Li-Ion battery keep better performance if never going less than 50%. But the difference will be barely noticeable.
Personally, after several tests on my own, I don't bother anymore with that (I mean for the modern Li-Ion type). Sometime you have a great battery, sometime a crappy one from a bad batch. I have seen battery died fast after "by the book" charges cycles. And others seem to last forever, no matter how bad I maintained her (like my 2006's laptop).
Anyway, thanks for sharing, even if you are wrong on this one
I don't know if you're wrong or right because when you search the net about battery charging, you find everything and it's opposite. But I disagree on three points:
- The battery is beefy and you really have to work hard to make it last less than a day
- I bought this incredible phone because of it's features. If I have to cut half of them to avoid drain, why did I buy it?
- I dare say that most of the people who buy a Note 2 somewhere are a bit "Tech-Nuts". If you're not, I am, so I don't mind if my battery doesn't last two years because I'm not sure that I will still have this phone all that long.
And if I do and the battery is dead, I'll buy a new, genuine, Sammy one to continue.
What's it worth to live 100 years if you can't have a drink from time to time, maybe have a smoke or whatever? Plug your phone in or out and use your GNote 2 happy
Lol everything has its cost turn off everything to save battery what is fun in that I have a smartphone to use it and be happy with animations and display and games otherwise get a 3310 it is best
Sent from my GT-N7100 using xda app-developers app
Hey everyone,
The battery life for stock on this device is superb. People love to see how much they can get it out of it. Good for you. I've been there.
If you want to maintain higher battery capacity over time, and reduce the chance of your battery from failing, then read on...
I stumbled across an app on XDA called Battery Charge Limiter (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002) and wanted to bring it up on here.
In short, it lets you limit the max % your device will charge to. This in effect saves cells in your battery and prolongs its life. This is proven. There are several reasons for this, but I'm not going to go into it. If you want, you can look into it at Battery University (the link is in the OP for the app).
MY EXPERIENCE
I have been using the app for about a week now, and I have had no problems with it. The default settings work perfectly with the Le Pro 3.
HOWEVER, if you are running stock you must allow the app to autorun and protect it from cleanup in the "Phone Manager". Otherwise you will need to manually start the app when you charge your device.
I have my device charge limited to 80%. I am easily getting a full day out of that charge (browsing, calls, SMS, and C.A.T.S gaming), usually charging once I hit around 25-40%.
I'm sure some of you will find this helpful. Feel free to click thanks so I feel good about myself :victory:
Cheers! :good:
I usually look for evidence like battery usage screenshot? A full-day usage should show something like 7-8 hours SOT with at least 2000mAh consumption.
It would also be better to charge the phone with a normal charger if you want the battery to last.
Normal charge when you are in no rush and the phone is sitting idle, Quick charge when its needed.
Personally, I couldn't be bothered as I change my phone every 8-10 months. Now waiting for Oneplus 5.
Joms_US said:
I usually look for evidence like battery usage screenshot? A full-day usage should show something like 7-8 hours SOT with at least 2000mAh consumption.
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I'll take a look at my battery usage. However, I'm definitely not looking at the screen for 7-8 hours before I charge again. If you typically spend that much time on your phone (before charging again) then you'll probably need to fully charge it and drain it almost empty. If that is the case, then what I'm suggesting to do here is not for you.