Want great battery life and a stable phone? - Samsung Galaxy Nexus

Don't use any type of battery monitor, widget or notification.
I was getting good battery life but had a few weird cases of reboots and where the phone would just shutdown and then need battery pull to get back up.
Since I stopped using any type of battery monitor/widget/notification my battery life is much much better (same usage pattern/apps) and I have not had a single reboot or issue.
I just wanted to share this for people having problems. Worth a shot.

I use JuiceDefender Ultimate and my battery life are more efficent!

Darkness Fury said:
I use JuiceDefender Ultimate and my battery life are more efficent!
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+1
i've been getting close to 20 hours on the standard battery.
expecting my extended oem battery soon!
GSM version of course!

There are a number of things that affect this. Most importantly, use CPU spy to check how much time your phone spends at each frequency, or rather in deep sleep. Some monitors in certain settings will keep the phone awake, draining battery.

Tubes6al4v said:
There are a number of things that affect this. Most importantly, use CPU spy to check how much time your phone spends at each frequency, or rather in deep sleep. Some monitors in certain settings will keep the phone awake, draining battery.
Click to expand...
Click to collapse
My AndroidOS wake time is much lower after getting rid of the battery status apps

I use Circle Battery Widget https://market.android.com/details?...oid.CircleBatteryWidget&feature=search_result and it has no noticeable effect on battery life.

I'm using Battery Solo Widget (was using Circle Battery Widget before) and it does not have any noticeable impact on battery life. Right now I'm at 36 hours on battery with 24% left

Lemim0uth said:
I'm using Battery Solo Widget (was using Circle Battery Widget before) and it does not have any noticeable impact on battery life. Right now I'm at 36 hours on battery with 24% left
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Click to collapse
Do you even power on your phone during the day(s)?

Use airplane mode at night while your u sleep. I lose less than 1%
Sent from my Galaxy Nexus using xda premium

Well the screen was on for 1 hour and 50 minutes (at max brightness) according to battery stats, so I'm not using it THAT much but the point is that a battery widget doesn't seem to have a big impact on battery life.
I also noticed that if I stop constantly closing applications after using them (by swiping on the ICS task switcher), my battery lasts a little longer

empiricDev said:
Use airplane mode at night while your u sleep. I lose less than 1%
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and lose 100% of your incoming calls or texts. good for battery life, not good for anybody who has a job/life that requires constant connectivity.

roflboxer said:
and lose 100% of your incoming calls or texts. good for battery life, not good for anybody who has a job/life that requires constant connectivity.
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Click to collapse
Yeah this isnt an option, I need to see missed calls and what not
However, when I do not have the androidOS wake bug, if my phone is on wifi I lose ~3-7% overnight, which is good IMO

I went to bed last night with 96% and left everything on and syncing and woke up to 88% so I think I'm content with letting it do it's thing. That was my first night with it so I expect it only to get better.
Sent from my Galaxy Nexus using xda premium

Double post.
Sent from my Galaxy Nexus using xda premium

roflboxer said:
and lose 100% of your incoming calls or texts. good for battery life, not good for anybody who has a job/life that requires constant connectivity.
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Click to collapse
I suppose if you work 24/7 you are correct. For those of us that don't, airplane mode is a great option. Also Google voice solves the missed call problem - you will be notified by email when you take airplane mode off.
Sent from my Galaxy Nexus using xda premium

As crappy as the battery life is during daily use...idle at night even with wifi left on and updating turned on its still only about 1% loss per hour...Also running the th3ory axiom roms too if that helps.

empiricDev said:
I suppose if you work 24/7 you are correct. For those of us that don't, airplane mode is a great option. Also Google voice solves the missed call problem - you will be notified by email when you take airplane mode off.
Sent from my Galaxy Nexus using xda premium
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Click to collapse
What if someone calls you and its an emergency? Like one of your kids calling to say they're stranded somewhere? Still a good idea? Or how about just plug in your phone while you sleep? Brilliant!!!

empiricDev said:
Use airplane mode at night while your u sleep. I lose less than 1%
Sent from my Galaxy Nexus using xda premium
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Click to collapse
You might as well turn off your phone if your doing that at night.
Sent from my Galaxy Nexus using XDA App

mv522 said:
You might as well turn off your phone if your doing that at night.
Sent from my Galaxy Nexus using XDA App
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Click to collapse
+1 This
Sent from my Galaxy Nexus using XDA App

I run the stock GSM battery, it lasts all day so I have no complaints.
If I had the samsung spare battery w/ charger for business trips i'd be set for those flights and airport waits.

Related

When did your battery life start to get better?

I have had the phone for 5 days and with fairly light usage, I am still not getting good battery life. I turn off all data and wifi when not using it and screen on time is below 2 hours.
Below is a screenshot of my battery life.
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It doesn't get better...get used to it until its fixed in an update , along with the other big issues.
Sent from my Galaxy Nexus using xda premium
By about the 3rd day it seemed better. But it's also difficult to gauge because the first few days you're bound to toy with it constantly.
Until there is an empirical way to gauge usage, like an amp meter attached to the phone - it's all perception imo.
GalaxynexusVZW said:
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In the top left you have three things running in the background, im assuming constantly. Uninstall them, especially the battery percentage since you can look that up easily on your phone
Sent from my Galaxy Nexus using XDA App
GalaxynexusVZW said:
I have had the phone for 5 days and with fairly light usage, I am still not getting good battery life. I turn off all data and wifi when not using it and screen on time is below 2 hours.
Below is a screenshot of my battery life.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Do yourself a favor and try aokp milestone 1 from rootzwiki , and also download lean kernel 1.1.1 on xda. Use interactiveX governor for kernel. This is the exact setup I am using now, and have been for a few days and have been getting insane battery life. Hope everything works for you.
Sent from my Galaxy Nexus using XDA App
Last time I checked lithium ion batteries don't get better after a few days and yes there are software fixes for battery life and bugs..
Sent from my Galaxy Nexus using xda premium
Reality. And a week. And getting a gsm version might help
Sent from my Galaxy Nexus using xda premium
cvbcbcmv said:
You really have no idea what you're talking about. First of all, it will get better, I won't bother explaining the science behind it considering you can do your own research, but it will, also, it can't be "fixed." Just like they can't make it an 8 mega pixel camera in an OTA. You can get it much better by doing custom roms and thigns of that nature.
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Click to collapse
Oh stupid me and here I was hoping for a 15 mp camera
Sent from my Galaxy Nexus using xda premium
It got better when I turned off vzw backup and google +.
Best I got is 16 hours bone stock just an extended battery. Worst I got was 4 hours(screen was on the whole time) watched 2 movies before I plugged in. I average around 12 hours from 100% to 20%.
Sent from my Galaxy Nexus using Tapatalk
GalaxynexusVZW said:
I have had the phone for 5 days and with fairly light usage, I am still not getting good battery life. I turn off all data and wifi when not using it and screen on time is below 2 hours.
Below is a screenshot of my battery life.
Sent from my Galaxy Nexus using xda premium
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Click to collapse
First off, it's hard to tell by your screenshot how good or bad your battery life is. You're burning approximately 10%/hr, but maybe you had your screen on or were surfing the internet for a portion of that time. Anything that involves data transfer will kill your battery faster.
I got my Galaxy Nexus on Wednesday, and I've had great battery from the start. I calibrated it by letting the phone's initial charge die down to zero, and then charged it all the way up to 100%, and then used the Battery Calibration tool. I drain between 2-3% hour with light use, but can obviously drain much more depending on what I'm using the phone for.
That being said, for those on this board who think an OS upgrade is going to fix the problem, I highly doubt it. I have a reasonably poor cell signal (averages around -95 dbm), but still get solid battery life. Given that we were all issued phones with the same software, if you're experiencing incredibly bad battery life, I'm going to point my finger at the hardware. It just doesn't make sense that some of us with 4.0.2 get great battery life, and others do not. You probably have either a bad battery or a bad phone. Now, I'll probably get called out for saying this, but watch all the posts that follow when the update releases, when people still have poor battery life.
This is my 3rd Android phone (Incredible, Charge, GN), and every one of these phones has had poor battery life. On average, if I'm playing around with the screen on, I'm draining upwards of 10%/hr, if not more. But if you properly calibrate the battery - which is VERY important - you should easily be able to get a full day's charge out of your phone.
There is a post on XDA about the 13 steps to proper battery calibration. Once I followed it on my last phone, my battery life went up at least 50%. You have to let the battery drain to 100%, then bump charge a number of times, then use the battery calibrator.
GalaxynexusVZW said:
I have had the phone for 5 days and with fairly light usage, I am still not getting good battery life. I turn off all data and wifi when not using it and screen on time is below 2 hours.
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Try running without JuiceDefender. Constantly toggling data on and off (or wifi on and off) actually hurts battery in almost all cases.
martonikaj said:
Try running without JuiceDefender. Constantly toggling data on and off (or wifi on and off) actually hurts battery in almost all cases.
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Click to collapse
Your results may vary, but when I used Juice Defender or Green Power on my Droid Charge, I nearly doubled the battery life. I haven't put it on my GN yet because my battery life is much better than what I had with the Charge.
No using JD or anything like that. Just the the phone do its thing. I don't even open the multitask button unless I want to switch between apps.
Sent from my Galaxy Nexus using Tapatalk
Gotta be a software issue with the battery.
Just this past weekend in Wash DC. Very strong 4 G market.
I had it fully charged off charger. After 7 hours without touching the phone even with google plus sign out, the battery went from 100% to 54%. It's like the phone was active a lot without me even touching it. No SMS/mms either. No emails either.
Know. I did same thing and put it on airplane mode with it 100% charged. After 7 hours on airplane mode it was at 98%.
So it's gotta be an operating system issue.
I tried it on wifi instead of 4G mode. And battery drainage was down to 72% after no use overnight.

[Q] Is this normal battery usage?

It feels like my phone can't last much more than a day.
Am I expecting too much juice from my phone or is this the normal amount it should be at?
Generally speaking for me I only last about 12 hours unplugged. Even when not in use on idle, i seem to lose 1% every 10-20min or so.
Someone please shed some light based on these battery screenshots and tell me if its normal or not.
Your biggest wakelock is audio out. Turn off keyboard sounds and screen touch sounds and lock sounds. Now your phone can sleep better.
Sent from my Galaxy Nexus using xda premium
You seem to have fairly frequent screen-on usage paired with frequent intervals of GPS usage (see battery graph).
Are you using GPS that frequently? If not, id investigate on why your GPS is being utilized so frequently.
I'd say based on your usage, your battery life is fairly normal.
Two hour screen time... That sounds about normal to go from full to dead. You're lucky the phone made it 12 hours. Many people get a lot less.
EP2008 said:
Two hour screen time... That sounds about normal to go from full to dead. You're lucky the phone made it 12 hours. Many people get a lot less.
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Two hours screen on time is normal? I hope you mean for the Verizon version..
Sent from my Galaxy Nexus using xda premium
with wifi on the whole time, that should help the battery last longer. I'm on LTE version and my battery life is similar to yours, but on 4G.
Based on your info, I would guess that you can improve it by turning off some things going on in the background. Widgets, weather, screen brightness, anything else using lots of background data or ram?
Sleeping with 4G, sync, and GPS all on I lose 1-2% per hour. But that's with no background apps other than stock OS stuff + AVG. I normally get 2.5 hrs screen time 100%-0% on 4G over a 12 hour period.
Well there's half the problem right there, facebook, it's refreshing for updates all the time.. also, underclock your phone so the max is 920MHz might save some, unless you wanna do some gaming or something it doesn't matter. Audioout seems to cause a lot of wake time for all android phones.. seen it in the epic 4g forums. But yessiree Bob.
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joshnichols189 said:
Two hours screen on time is normal? I hope you mean for the Verizon version..
Sent from my Galaxy Nexus using xda premium
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Normal for a lot of people. Just look at all the poor battery threads. I get 2:30h with my gsm GN running Wifi and very minimal apps which sync. My browser is inverted and my screen brightness is low.
I get good standby time, but that doesn't really comfort me as I have a powerful phone I can't actually USE.
You will hear people say they get great battery life or they are fine with 2h screen time, but I just think they don't want to admit that a $700 phone in 2012 should have better life than this.
If you ask for advice, people will tell you to stop complaining and / or get a new phone. Don't reply to them or an XDA mod will threaten to ban you. Happened to me.
Sent from my Galaxy Nexus using Tapatalk
EP2008 said:
Normal for a lot of people. Just look at all the poor battery threads. I get 2:30h with my gsm GN running Wifi and very minimal apps which sync. My browser is inverted and my screen brightness is low.
I get good standby time, but that doesn't really comfort me as I have a powerful phone I can't actually USE.
You will hear people say they get great battery life or they are fine with 2h screen time, but I just think they don't want to admit that a $700 phone in 2012 should have better life than this.
If you ask for advice, people will tell you to stop complaining and / or get a new phone. Don't reply to them or an XDA mod will threaten to ban you. Happened to me.
Sent from my Galaxy Nexus using Tapatalk
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2:30..? On wifi? What are you running? I can always get over 3 on wifi with the stock battery..
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I'm not sure whats going on on your phone but here is my current battery life.
Running AOKP M3
I listened to music for at least 4-5 hours this morning. I have Twitter set to update every hour or so and auto-sync on. If you have any other questions about how mine is setup, just ask.
xsnipuhx said:
I'm not sure whats going on on your phone but here is my current battery life.
Running AOKP M3
I listened to music for at least 4-5 hours this morning. I have Twitter set to update every hour or so and auto-sync on. If you have any other questions about how mine is setup, just ask.
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Click to collapse
But you hardly had the screen on.. that's what the thread is about screen on time as the screen is the biggest battery killer
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I had 2hr and 5m according the the battery usage screen right now. =/
joshnichols189 said:
2:30..? On wifi? What are you running? I can always get over 3 on wifi with the stock battery..
Sent from my Galaxy Nexus using xda premium
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Stock 4.0.1. My usage is mostly browser based and Evernote.
If you watch movies, your screen time will be higher, but I use my phone for productivity and it dies fast.
Sent from my Galaxy Nexus using Tapatalk
EP2008 said:
Normal for a lot of people. Just look at all the poor battery threads. I get 2:30h with my gsm GN running Wifi and very minimal apps which sync. My browser is inverted and my screen brightness is low.
I get good standby time, but that doesn't really comfort me as I have a powerful phone I can't actually USE.
You will hear people say they get great battery life or they are fine with 2h screen time, but I just think they don't want to admit that a $700 phone in 2012 should have better life than this.
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+1
With standard battery and stock ROM this phone can only give 2.5 - 3 hours screen time, which is unacceptable IMO in this day and age.
Turn GPS off, turn wifi off, don't use this app, only use that app, turn sounds off, don't increase the brightness, limit the cpu etc etc... So why did I buy a smartphone that I can't use then?
Sent from my Galaxy Nexus using XDA App
I have owned more android phones than I can count, and tried more ROMs and Kernels than you can imagine. Countless times I have seem claims of improved battery life, and until recently nothing made a noticeable difference short of not turning on the phone. I am running the latest GummyNex Rom with the Franco Kernel 15.2 and it is shocking. I have verified the last two nights by leaving phone off the charger. Night #1 -8 hours 30 minutes phone sat while I slept, on 4g GPS enabled, and used 8% battery. Last Night 8:15 phone sat, same conditions only 7% battery usage. I am using the "Franco Turtle" governor and notice not performance degradation and only incredible battery life. Very impressive

I need battery life!

Alright I have grown beyond angry at how crapy my battery life is...... I go into school with 100 percent battery and everything off except texting and calling (which I send like 5 texts all day) and I come out with less than 70 percent. I have low signal in the building though, and my phone is set to the lowest speed on power save and I hardly ever turn the screen on. I would like for you guys to share your battery life's here with screen shots if you have them and your whole setup. Thanks beforehand!
Sent from my Galaxy Nexus using Tapatalk 2
You know.., there are some threads made showing/asking battery life. Here's one
http://forum.xda-developers.com/showthread.php?t=1834634
Sent from my Galaxy Nexus using xda premium
Well seems like your phone does not deep-sleep very well? 30% drain doing hardly anything seems much even if the reception is low. I have excellent idle-drain on my Nexus as seen in my attachment.
What does your battery stats show you after a day at school?
dakota.breeden said:
Alright I have grown beyond angry at how crapy my battery life is...... I go into school with 100 percent battery and everything off except texting and calling (which I send like 5 texts all day) and I come out with less than 70 percent. I have low signal in the building though, and my phone is set to the lowest speed on power save and I hardly ever turn the screen on. I would like for you guys to share your battery life's here with screen shots if you have them and your whole setup. Thanks beforehand!
Sent from my Galaxy Nexus using Tapatalk 2
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Click to collapse
How long is school? What ROM/Kernel, if any, are you running? Is this the stock battery?
I am losing about 1-2%/hour while I sleep but I feel I get acceptable battery life. I am running Affinity with default Franco r249 kernel. I also have an 2100 mAh battery. Using WiFi almost the whole time this is my most battery life. I would recommend an extended battery and connecting to the school's WiFi if it's available.
Allons-y
For me turning off data helps lots
-----------
iphones are the creation of people with nowhere left to turn
I bet you have weak signal when in school building. What helped me is turning off 3g
Swyped on my Galaxy Nexus running AOKP with Trinity Kernel, overclocked to 1.4GHz
I HAVE ONE SUGGESTION THAT MY HELP. GO 2 GOOGLE PLAY N DOWNLOAD THE APP JUICE DEFENDER THERE'S A FREE N PAID ITS UR DECISION READ N CHOOSE WHAT'S BUT 4 U . GOOD LUCK!!!!!
Sent from my VS920 4G using xda app-developers app
There is nothing on except calling and texting while I'm in school which is 7 hours long I am running cm10 with its kernel at the moment.
dakota.breeden said:
There is nothing on except calling and texting while I'm in school which is 7 hours long I am running cm10 with its kernel at the moment.
Click to expand...
Click to collapse
What does your phone say is using your battery? Try clean flashing the ROM, or maybe a different ROM, and see if that helps. How often are apps set to pull data? Look at your battery stats after school and see where it's leaking from.
Allons-y
Do you leave your GPS on? Turn of data if you know your not going to be using it for a while.
Sent from my Galaxy Nexus using xda app-developers app
There is nothing on (gps-data-etc.) i have only calling and texting enabled.
If you have a weak signal inside the building, and mobile network enabled for receiving calls, your phone will expend a lot of battery just trying to constantly find and reconnect to the mobile network. May even get warm. This is especially true if you also have automatic data-sync enabled and your phone is trying to sync a lot of apps over a weak signal. You could test this out by leaving your phone in airplane mode for a few hours. If you get no battery drain then, it's probably a weak signal causing the problem.
Above post is True. When I was in school in a full concrete building I drained heavely. At 10 hours I drained 2 full batteries with my S2.
Try turning in the airplane mode and you'll see a big diffrence. Turn it off When u have a break and are outside.
Btw 30% battery usage on 7 hours isnt bad..
Sent from my HTC Sensation XL with Beats Audio X315e using xda premium
I am at lowest cpu usage when the screen is off which is 90% of the time.
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dakota.breeden said:
I am at lowest cpu usage when the screen is off which is 90% of the time.
Sent from my Galaxy Nexus using Tapatalk 2
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Click to collapse
Even with the phone completely unused and idle and the screen off, if there is a weak signal the radio will be working overtime trying to stay connected to the mobile network, causing battery drain.
I don't know what happened with the 20120914 CM10 nightly, but I've been getting incredible battery life since flashing it (dirty flashed from M1).
Where I usually got something about 2h 50min of screen on time, I'm now getting 4h+. This is with 3G data, GPS, BT (no connected devices 99% of the time), WIFI, automatic backlight and screen rotation on, CPU at 1350 MHz and GPU at 384 MHz. Good times :good:
I have great battery life running stock with kernel, VZW leak that is, apologize if you're on another carrier
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Hey guys, has your battery life improved at all since 4.2?
check wakelocks with better battery stats
dakota.breeden said:
Hey guys, has your battery life improved at all since 4.2?
Click to expand...
Click to collapse
Have not noticed anything remarkable.
Sent from my Galaxy Nexus using xda premium

Ways to achieve great battery life

I'm starting this thread for us to share ways to have to the best battery life
Sent from my Samsung Galaxy 2
Another one?
Sent from my SGH-T989 using xda app-developers app
My phone lasts a really long time when I keep it plugged in.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
RTFOP said:
My phone lasts a really long time when I keep it plugged in.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
Haha mine too
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
Best thing I have found is to totally drain battery to the point it the phone will only slightly vibrate. Remove the Battery. Put the battery back in and then fully charge with the phone on charge mode to 100 percent. Unplug. Then plug back in a few seconds later for fully charged to reappear. Done. Really helps to do this once every month or two. Credit to someone on another forum for this tip. Turning off data when not in use and low screen brightness will substantially increase battery life. No syncing, bluetooth or wifi will help. An app called GSam battery monitor will identify apps that suck battery. I use longevity by trend micro to shut my data off.
Sent from my SGH-T989 using Tapatalk
cpnfantstk said:
Best thing I have found is to totally drain battery to the point it the phone will only slightly vibrate. Remove the Battery. Put the battery back in and then fully charge with the phone on charge mode to 100 percent. Unplug. Then plug back in a few seconds later for fully charged to reappear. Done. Really helps to do this once every month or two. Credit to someone on another forum for this tip. Turning off data when not in use and low screen brightness will substantially increase battery life. No syncing, bluetooth or wifi will help. An app called GSam battery monitor will identify apps that suck battery. I use longevity by trend micro to shut my data off.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Fully draining a lithium ion battery will significantly decrease it's lifespan. Any positive effects you see from this are probably not measurable, or scientifically reproducible. Your other tip is solid, disabling data (or using an app to do so) greatly increases battery life. As well as turning down the brightness.
daveid said:
Fully draining a lithium ion battery will significantly decrease it's lifespan. Any positive effects you see from this are probably not measurable, or scientifically reproducible. Your other tip is solid, disabling data (or using an app to do so) greatly increases battery life. As well as turning down the brightness.
Click to expand...
Click to collapse
Had no idea this practice decreases lifespan of the battery. Good to know. I thought the this resets the phone ability to recharge the battery to the fullest. That's what I thought. I seem to be getting some benefit.
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cpnfantstk said:
Best thing I have found is to totally drain battery to the point it the phone will only slightly vibrate. Remove the Battery. Put the battery back in and then fully charge with the phone on charge mode to 100 percent. Unplug. Then plug back in a few seconds later for fully charged to reappear. Done. Really helps to do this once every month or two. Credit to someone on another forum for this tip. Turning off data when not in use and low screen brightness will substantially increase battery life. No syncing, bluetooth or wifi will help. An app called GSam battery monitor will identify apps that suck battery. I use longevity by trend micro to shut my data off.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Great tip. Thanks
Sent from my GT-I9100 using Tapatalk 2
- Juice Defender
- Llama to automate a myriad of things related to power savings
- Darkside Venom kernel
- Badass / noop
- 1134/192
- CPUSleeper
- inverted apps for almost everything that I use heavy.
That's what I can think of right now.
Typically get ~5 hours "screen on".
That could be 12 hours or 2 days between charges.
Kent
Sent from my SGH-T989 using xda app-developers app
cpnfantstk said:
Had no idea this practice decreases lifespan of the battery. Good to know. I thought the this resets the phone ability to recharge the battery to the fullest. That's what I thought. I seem to be getting some benefit.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Battery lifespan for lithium ion batteries is measured on how many cycles its been through (hits 100%). If you go from 90% to 100%, you just used up a battery cycle. Even 99% to 100% counts as a cycle.
The method you described in your earlier post is for conditioning your battery, it works on older batteries but is not needed for lithium or poly lithimer batteries.
Tips for battery life, disable radios and keep screen dim. A dark wallpaper helps too, white screens are a battery drainer!
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
Get a app that disables other apps that start up on system boot-up or other events. Autostarts its a good app I use. As you all should know dont use app-killers unless u know how and when to use them (READ). Like said keep ur screen dim or on auto if u have that issue like me were ur constantly going in n out at work and find ur phone too dim for daylight. The darker your themes the better battery life. Remember that ur screen is one of the top (if not the top) battery drainers. Data, wifi, gps, bluetooth, auto-sync, running widgets, live wallpapers...if you dont need it on or could live without it, then either turn it off or get rid of it.
Also like said before, lithium-ion batteries dont suffer from memory effect like older rechargable batteries. If you could avoid it, dont run ur battery all the way down. Be free to charge ur battery as often as possible and that way you extend the life of ur battery.
Sent from my Blutiful Hercules.
Use the lowested sync frequency setting you can or manally sync. Wifi tether guzzles juice. Live wallpaper is a killer. Make task killing a subconscious reflex. The smaller the number is next to "running in background" also makes for more time away from an outlet. Of course these may not help any one else, but it works for me
Fully charge 2 batteries. Unlimited talk and text. True story
Sent from my SGH-T989 using xda premium
I run the ParanoidAndroid 2.51 rom (10/24) with the KKO kernel and it goes pretty good so far. It may be the first day of using it but I will expectedly average 20hours of use on it. (using the live wallpaper phase beam the whole time). Used the wheatly governor with SIO and changed the max cpu to about 1028 so its only using 1Ghz. (seem to get decent battery life)

Limit the Note 2 from 1.6Ghz to 1.1Ghz with build in feature to save battery

I know most of you already notice this but if you don't:
In Setting/ Power saving mode, check the "CPU power saving" then your phone will be limit to 1.1GHz max from 1.6Ghz.
I would suggest to tick on the "Screen power saving", "background color" and "turn off haptic feedback" to save some extra juice.
LTE on. 24h unplugged. 75% screen brightness. Full heavy haptic feedback. Heavy gaming and Internet use. Phone calls. Texting. 3D live wallpaper. Still 7h screen on time before the phone finally had to be plugged in.
I don't know what you use your phone for but I'm going crazy on mine and can't kill the battery. If you need more juice, then more power to ya. I can't fathom why.
Sent from my SAMSUNG-SGH-I317 using xda premium
LOL I tried to kill mine but it out lasted me I woke up at 5 for work and by end of the day I went on a 2 hour gaming session to try and completely drain it and got it to 9% but it was like 10 and had work next day so gave up. I lost
I'm still suffering from battery OCD after coming from the iphone 4S. Now I feel like plugging in my note 2 whenever I'm at my desk at work.... So you guys don't think I need to?
I dont touch my charger till I hit the bed.
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UCLAKoolman said:
I'm still suffering from battery OCD after coming from the iphone 4S. Now I feel like plugging in my note 2 whenever I'm at my desk at work.... So you guys don't think I need to?
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Click to collapse
Try a day without charging your phone at your desk. Yesterday I pulled in about 7 hours of on-screen time. That's with LTE and anything else internet intensive you could imagine. The only way you'll overcome that worry you have is to test it out yourself. I'm sure you won't be disappointed.
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I run mine full cycle every time to 1% left then charge. Best way to maximize battery life
Err0xx said:
LTE on. 24h unplugged. 75% screen brightness. Full heavy haptic feedback. Heavy gaming and Internet use. Phone calls. Texting. 3D live wallpaper. Still 7h screen on time before the phone finally had to be plugged in.
I don't know what you use your phone for but I'm going crazy on mine and can't kill the battery. If you need more juice, then more power to ya. I can't fathom why.
Sent from my SAMSUNG-SGH-I317 using xda premium
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Click to collapse
I'm with you. I came from the Skyrocket and it was a struggle to get through a full weekday on LTE. In the past week with the Note 2 I don't even have to think about charging it when I'm awake during the day. It's very liberating!
Suzook1 said:
I run mine full cycle every time to 1% left then charge. Best way to maximize battery life
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I would understand this philosophy if the Note 2 didn't have an easily replaceable battery, but in a years time you could replace a poor battery for cheap. Just recently the stand with extra battery and charger was $30 on the Samsung site (it may still be that price)
I think its my ocd from my note 1. Always seeking the longest battery life possible
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Jrockttu said:
I'm with you. I came from the Skyrocket and it was a struggle to get through a full weekday on LTE. In the past week with the Note 2 I don't even have to think about charging it when I'm awake during the day. It's very liberating!
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I came from worse. I had an HTC Raider (Vivid) and that battery was horrid. Stupid HTC putting a 1620mah battery in a phone with LTE and a 4.5" screen
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Err0xx said:
LTE on. 24h unplugged. 75% screen brightness. Full heavy haptic feedback. Heavy gaming and Internet use. Phone calls. Texting. 3D live wallpaper. Still 7h screen on time before the phone finally had to be plugged in.
I don't know what you use your phone for but I'm going crazy on mine and can't kill the battery. If you need more juice, then more power to ya. I can't fathom why.
Sent from my SAMSUNG-SGH-I317 using xda premium
Click to expand...
Click to collapse
Damn, I wish I could get run times like that. I usually get HSPA signal and after 16 hrs I'm dead with 4-5 hrs of screen on time. I mostly text and do web browsing. Maybe an hour of music with wifi on all the time and auto brightness. Still lasts longer than my SGS3 did.
My first charge is 7 hours screen time for 24 hours unplugged. Now it's going down hill to 4-4:30 hours after i rooted and remove bloats. Installed couple MoDs.. Dammed i wish i can go back to 7 hours screen time
sweetboy02125 said:
My first charge is 7 hours screen time for 24 hours unplugged. Now it's going down hill to 4-4:30 hours after i rooted and remove bloats. Installed couple MoDs.. Dammed i wish i can go back to 7 hours screen time
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Click to collapse
You do know to "remove bloat" all you had to do was go into the stock app manager in settings and disable anything you didn't want. That is actually a much better solution than "freezing" with TiBu or removing altogether. I'm not convinced root and mods are 100% stable yet. Most people reporting decreased battery life are those that have rooted or modded something. I'm still 100% stock with ATT stuff disabled and batt life is still 7+ hours.
Sent from my SAMSUNG-SGH-I317 using xda premium
Err0xx said:
You do know to "remove bloat" all you had to do was go into the stock app manager in settings and disable anything you didn't want. That is actually a much better solution than "freezing" with TiBu or removing altogether. I'm not convinced root and mods are 100% stable yet. Most people reporting decreased battery life are those that have rooted or modded something. I'm still 100% stock with ATT stuff disabled and batt life is still 7+ hours.
Sent from my SAMSUNG-SGH-I317 using xda premium
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Even bare stock I wasn't getting that much screen on time. So far I've only rooted and changed the kernel. Though today my battery life is starting off good. Yesterday I ticked the power saving option for the screen. I'll post an update tomorrow.
Today I was on for 5.5 hours, screen time of 2.2 and was at 54% with Power Saving On
So I went to bell and grabbed another battery
Time will tell if that helps
I could never reach 5 hours of screen time but could have the phone on for 30+ hours
I cant wait till we get more developer support, I used Francos Kernel with my galaxy nexus and it improved battery by 30 % and made my 8 hours overnight use only 2% battery. I was using 12-17% overnight with my note 2 asleep. Aside from kernels and roms I use this phone exactly the same as I did my Nexus. wifi off, bt off, gps on, push email on, auto brightness
UCLAKoolman said:
I'm still suffering from battery OCD after coming from the iphone 4S. Now I feel like plugging in my note 2 whenever I'm at my desk at work.... So you guys don't think I need to?
Click to expand...
Click to collapse
Lithium Ion batteries actually do better if you don't charge it constantly. In other words let it run down a bit before charging. You don't want to always keep "topping it off". But in general these batteries are much more resilient than others.
Just do some research. There's lots of info out there.
Suzook1 said:
I run mine full cycle every time to 1% left then charge. Best way to maximize battery life
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Click to collapse
Umm, no, it does not. You are stressing the battery out. Unless needed, dont keep the battery below 20%. Its healthier to charge the phone sporatically throughout the day.
These aren't nickel batteries...they dont need to be trained or "cycled"
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I'm a battery test engineer so I have played around with Li-ion batts.
If you can keep the phone at cool temperature and charge at 40% and stop at 80% then keep doing 40-80, your battery will last double long
★♡★ AT&T Galaxy Note II ★♡★
erick161 said:
Umm, no, it does not. You are stressing the battery out. Unless needed, dont keep the battery below 20%. Its healthier to charge the phone sporatically throughout the day.
These aren't nickel batteries...they dont need to be trained or "cycled"
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
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Click to collapse
Agreed. Full discharges are not necessary for lithium ion batteries. Full discharges were needed for NiCad or NiMH batteries as they suffered from memory effect. LithIon doesn't suffer from this. With that said, a lot of experts do suggest discharging a LithIon periodically, maybe once a month or every other month.

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