Develop Bugs

Battery draining issues

I have 2 extended batteries, one is 2200mAh and the other one is 2400mAh. They both drain very fast unless they are charged using an external charger. I was just wondering if anyone else was having draining issues as well.
XDA app on EVO 4G

shonmac11 said:
I have 2 extended batteries, one is 2200mAh and the other one is 2400mAh. They both drain very fast unless they are charged using an external charger. I was just wondering if anyone else was having draining issues as well.
XDA app on EVO 4G
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I personally believe that the algorithm used to determine charge capacity is inaccurate. I have a 3500 mah battery and I have to go through a series of charging maneuvers to get it to charge completely. Once it is charged fully, the battery life is outstanding. But if I simply disconnect when the LED turned green, without my maneuvering, it "appears" to drain fairly quickly.
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dougjamal said:
I personally believe that the algorithm used to determine charge capacity is inaccurate. I have a 3500 mah battery and I have to go through a series of charging maneuvers to get it to charge completely. Once it is charged fully, the battery life is outstanding. But if I simply disconnect when the LED turned green, without my maneuvering, it "appears" to drain fairly quickly.
Posting & replying via the XDA Premium app
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I have the same exact problem. Do you think an update in the firmware could possibly fix this problem if it were brought to HTC/Sprint's attention
XDA app on EVO 4G

shonmac11 said:
I have the same exact problem. Do you think an update in the firmware could possibly fix this problem if it were brought to HTC/Sprint's attention
XDA app on EVO 4G
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It would need to be more than 1 person complaining to get that kind of result. id by chance you're on PRL&NV 1.90, try downgrading to 1.77, as many users see better battery life on 1.77 over 1.90.

teh roxxorz said:
It would need to be more than 1 person complaining to get that kind of result. id by chance you're on PRL&NV 1.90, try downgrading to 1.77, as many users see better battery life on 1.77 over 1.90.
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I don't know how to do that and I'm not rooted
XDA app on EVO 4G

If the battery drain you see is the INITIAL drain this is to be expected. Your phone will drop to about 92% or so in the first 10 minutes. After that it should be smooth sailing
(if this is not what you're talking about, disregard this comment haha)

dougjamal said:
I have a 3500 mah battery and I have to go through a series of charging maneuvers to get it to charge completely.
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Can you define maneuvers?
I have a 3500 mah battery too. I usually leave it on the charger for a good 90-120 minutes after the green light is lit. Once the waveform in the batt monitor widget has stabilized to one resembling a sawtooth wave (/\/\/\/\/\/) with identical amplitudes, I consider it done. I followup by shutting the phone down, waiting til the amber light is green again, then unplugging/booting up.
Depending on the amount of use during the previous off charger time, rebooting it keeps the os from slowing down.

Greenfieldan said:
If the battery drain you see is the INITIAL drain this is to be expected. Your phone will drop to about 92% or so in the first 10 minutes. After that it should be smooth sailing
(if this is not what you're talking about, disregard this comment haha)
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That's what happens but not around 90% its more around 70% then it last for about 8 hours
XDA app on EVO 4G

I have a 3000mah battery and I use battery snap to monitor volts and remaining time left on battery. The battery status could say 100% but I look at the volts. If it says 100% but only 3.991 Volts for example then I know my battery isn't fully charged and within 10min it will be at 88% . But when my volts say 4.204 volts then I know it's truly at 100% and battery life is great . So I suggest check the voltage before unplugging.
Sent from my PC36100 using XDA App

What do you mean manuvering
?
Sent from my Desire HD using XDA Premium App

ive read lots of threads about the battery on the evo, its natural for it to drop from 100% to 90% within the first 10 min, something about the evo not charging the battery fully to help preserve the battery or something, there is some steps you can do to charge the abttery fully, but that invloves turning it off, plugging, unplugging, etc... personally i use an external battery charger, and 2 batteries, it seems to charge the battery better, and it doesnt seem to drop that 10% so quickly, it still drops faster then it should, but it seems to stick a little longer, but after it drops that 10% it stabalizes and drops a lot slower, u can pickup batteries and chargers cheap

Best way to charge battery

Kinada new to this. But
It is ok to charge the Samsung stock gsm battery at any percentage or should I wait till it low to charge it??
Like if I'm at 30% at night and need full battery for the next day, should I drain it to 10% ish or just let it charge from 30%??
Would it shorten the length of the battery or harm/damage the battery in any way??
Sent from my Galaxy Nexus using xda premium

airkenada said:
Kinada new to this. But
It is ok to charge the Samsung stock gsm battery at any percentage or should I wait till it low to charge it??
Like if I'm at 30% at night and need full battery for the next day, should I drain it to 10% ish or just let it charge from 30%??
Would it shorten the length of the battery or harm/damage the battery in any way??
Sent from my Galaxy Nexus using xda premium
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doesnt matter with lithium.

Samsung Galaxy Nexus uses Li-Ion battery. So it doesn't matter if u charge it any way u like.
follow this for tips: http://lifehacker.com/5875162/how-often-should-i-charge-my-gadgets-battery-to-prolong-its-lifespan

Does leaving the phone plugged into the charger all night degrade the battery?

creeve4 said:
Does leaving the phone plugged into the charger all night degrade the battery?
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yes it does.. overcharging the battery is not good. it may decrease its capacity. it is always recommended to unplug it when your phone is fully charged

- It is best to keep the battery between 20-80% and never fully discharge it except for the first time just for calibration
- It is preferable to use the pc for charging (slow charging is better)
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

mohaimed said:
yes it does.. overcharging the battery is not good. it may decrease its capacity. it is always recommended to unplug it when your phone is fully charged
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What you'd stated is true but doesn't the galaxy nexus have its own safety for this where it stops charging and runs off the battery til it drops to ~98-96% and then charges back up ?
Sent from my Galaxy Nexus using xda premium

DynamicRam said:
- It is best to keep the battery between 20-80% and never fully discharge it except for the first time just for calibration
- It is preferable to use the pc for charging (slow charging is better)
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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Is slow charging really better? In my experience, when charging from AC, the battery lasts longer than when I charged it from my laptop.

fifarunnerr said:
Is slow charging really better? In my experience, when charging from AC, the battery lasts longer than when I charged it from my laptop.
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It should be better because its cooler also its more steady than an AC Charger

I just charge it at night before sleeping and unplug it when I wake up..taught the battery stop overcharging??
Sent from my Galaxy Nexus using xda premium

creeve4 said:
Does leaving the phone plugged into the charger all night degrade the battery?
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No, the charger will stop charging when the battery is full. If it didn't, an explosion would awaken you at night....

[Q] Questions about battery life.

-Does keeping the phone plugged in via USB (when battery is at 100%) decrease battery life?
-Approximately how long should the battery last if the phone idles? If the screen is on 24/7?
-Are these batteries any good compared to the stock one?

IamaznX said:
-Does keeping the phone plugged in via USB (when battery is at 100%) decrease battery life?
-Approximately how long should the battery last if the phone idles? If the screen is on 24/7?
-Are these batteries any good compared to the stock one?
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Click to collapse
1.) Plugging in the phone while charged does decrease the battery life as you can only charge a battery for lets say 1000 cycles or so.
2.) Battery life depends on how long you use your phone, your ROM so I couldn't say. But my phone with the screen on lasts about 8 hours (SGH-T989)
3.) Check the reviews, it has five stars so I would assume that the battery is pretty good.

nivekx9 said:
1.) Plugging in the phone while charged does decrease the battery life as you can only charge a battery for lets say 1000 cycles or so.
2.) Battery life depends on how long you use your phone, your ROM so I couldn't say. But my phone with the screen on lasts about 8 hours (SGH-T989)
3.) Check the reviews, it has five stars so I would assume that the battery is pretty good.
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Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?

IamaznX said:
Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?
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Ehh I wouldn't think so...unless something is waking it up every now and then like a app or something...I normally loose about 10% if that if I let it sit over night
Sent from my SAMSUNG-SGH-T989 using xda premium

IamaznX said:
Is losing about 30% battery life overnight (about 7 hours) with the screen off normal?
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Not at all. I would use a battery monitor app to see what's draining the battery because that's very excessive drainage.
I can't imagine how much it drains when you're actually using it...

what rom/kernel are you using?

I agree with what others here have said, but just to add a little something, I heard that for the best battery "life" its best to try and keep it between 20% to 90%. Don't quote me, I heard it on one of those YouTube tech channels, I wonder if that is true. I always thought that it was best to completely kill the battery and then fully charge it.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app

inocent3 said:
I agree with what others here have said, but just to add a little something, I heard that for the best battery "life" its best to try and keep it between 20% to 90%. Don't quote me, I heard it on one of those YouTube tech channels, I wonder if that is true. I always thought that it was best to completely kill the battery and then fully charge it.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
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That's for a new battery. Only for a couple full cycles. Else it's best to charge when you hit 15-20 and charge uninterrupted to 100.
Sent from my SGH-T989

Charging at night?

Is it safe to charging at night, if it's not, what will it do to the battery?
Customer service always tells me to charge it just for 3-4 hours, but I have difficulty with that since I get home late and I leave early, but I still manage to get a full battery without it charging overnight but I would just like to know
Sent from my SGH-M919 using xda app-developers app

kevinrubio1 said:
Is it safe to charging at night, if it's not, what will it do to the battery?
Customer service always tells me to charge it just for 3-4 hours, but I have difficulty with that since I get home late and I leave early, but I still manage to get a full battery without it charging overnight but I would just like to know
Sent from my SGH-M919 using xda app-developers app
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I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.

lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
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Hmm that's weird, but from the sounds of that, I don't think it's healthy for the battery to charge for a long time
Sent from my SGH-M919 using xda app-developers app

lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
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Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919

lalec said:
Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919
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That thread is perfect! I would use it but I need notifications to notify me but I did use it for a night! Amazing difference
Sent from my SGH-M919 using xda app-developers app

lalec said:
Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919
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I do use that guide. My signal is terrible and is what drains my battery. I really don't believe that is related to any app running wild and draining my battery because from completely dead to 100% takes about 2.5-3 hours with me using it, WiFi on, brightness at 100%, etc; I can also easily get over 2 days without a charge with light use... It would be more but my lack of signal accounts for an almost 1.5% per hour idle drain. Good signal areas I'll drain less than .5% per hour with no use/app changes outside of having a strong signal.

Weird...
When your phone charges to 100%, your phone knows to stop charging, mine always stops charging when is says "reached 100%". I just leave it on the charger and it stays steady at 100 until i take it off.
It shouldn't effect the lithium ion, either.
I thought that was the special thing about lithium ion?
They don't wear down?
Idk, could be wrong.
Sent from my SPH-L720 using xda app-developers app

Overnight charging is a no no. More info here http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

I always leave it charging when I fall asleep. And if, IF I wake up in the middle of my sleep and see that it's at 100% I'll unplug it. If I don't wake-up I'll just leave it charging until I wake up. Been doing that since before I even had a smartphone and never had any problems. Then again I do switch phones every year
Sent from Flip's Galaxy S4

lordcheeto03 said:
I do use that guide. My signal is terrible and is what drains my battery. I really don't believe that is related to any app running wild and draining my battery because from completely dead to 100% takes about 2.5-3 hours with me using it, WiFi on, brightness at 100%, etc; I can also easily get over 2 days without a charge with light use... It would be more but my lack of signal accounts for an almost 1.5% per hour idle drain. Good signal areas I'll drain less than .5% per hour with no use/app changes outside of having a strong signal.
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A bad signal will definitely drain your battery. When I know I am in an area without signal and will be there for a few hours I turn my phone's power off so I have some battery left when I need it.
Sent from my SGH-M919

I've always charged my phone at night and have never had usages with the battery.
Sent from my SGH-M919 using Tapatalk 2

Bought some cheap batteries on Amazon, I charge whenever I want, however I want (typically overnight, all night). If I ruin the battery, so be it, I can just pop it out and replace it in 5 seconds. This is the real advantage of having a removable battery.

I've always left my smartphones on the charger overnight. Seven years going and haven't had any issues. I do tend to replace my battery after 9-12 months of use though.
lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
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This sums it up. Per the article linked earlier in the thread about charging li-ion, it sounds (relatively) trivial for the device manufacturer to implement a charging cut-off after the cells reach a specific voltage level. Once the cells drop to a certain level they're safe to charge again, and the cycle starts over. I don't imagine it's great for the battery to sit on that recharge cycle, but it's not going to over-charge and become a fire hazard.
I imagine external battery chargers might be a little different. That $3 battery & charger from eBay isn't going to have the same safety regulations as a major manufacturer like Samsung.

norml said:
Overnight charging is a no no. More info here http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
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An interesting tidbit from that article.
Li-ion does not need to be fully charged, as is the case with lead acid, nor is it desirable to do so. In fact, it is better not to fully charge, because high voltages stresses the battery.
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I'm pretty sure a $600 phone can handle any of your charging blunders. Relax kid.
We're not dealing with Nokia's anymore.
Sent from my SGH-M919 using xda app-developers app

Avoiding full charge has benefits, and some manufacturers set the charge threshold lower on purpose to prolong battery life.
Lithium-ion does not need to be fully charged; a partial charge is better.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

tikay00 said:
I'm pretty sure a $600 phone can handle any of your charging blunders. Relax kid.
We're not dealing with Nokia's anymore.
Sent from my SGH-M919 using xda app-developers app
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All the other comments say not to charge over night...
Sent from my SGH-M919 using xda app-developers app

I charge mine overnight with no issues.
Sent from my TI-82 using XDA Premium

I just called Samsung and they highly recommend me to not charge it over night
Sent from my SGH-M919 using xda app-developers app

norml said:
Avoiding full charge has benefits, and some manufacturers set the charge threshold lower on purpose to prolong battery life.
Lithium-ion does not need to be fully charged; a partial charge is better.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
I get the general concepts that the article presents, but it doesn't really address any advances in charging methodologies that newer devices could add. It reads like it was designed for 'dumb' devices such as cordless phones, rechargable power tools, etc. For instance, it says never to charge with the device powered on. Yet Windows Phones (at least my Lumia 800) won't charge with the device off...plugging it in automatically boots the phone up.
Our phones obviously have more advanced power circuitry, such as being able to hold the power button in and have the device power cycle no matter what state the phone is in, and I assume it applies to other parts of the phone as well.

[Q] Charging M8 - power cycling?

I usually charge my HTC One M7 phone overnight and I just got a new M8. The T-Mobile rep told me that overnight charging kills the battery and that it's better to let the battery die down to 0% and then recharge. Is this true?

Draining the battery is not good for it. Better to charge with some juice left in it. I let mine die once a month only.
Sent from my LG-D800 using XDA Free mobile app

Johann12911 said:
Draining the battery is not good for it. Better to charge with some juice left in it. I let mine die once a month only.
Sent from my LG-D800 using XDA Free mobile app
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Is it bad to keep it plugged in when it's at 100%? Will that shorten the battery life over time?

limache said:
Is it bad to keep it plugged in when it's at 100%? Will that shorten the battery life over time?
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It's no good to leave it plugged in for days and days keeping it at 100%. Its also no good to let it drain to 0%.
Charging overnight is fine, it cuts off the charger when it reaches 100%. Best practice is to have it drain no lower than 50-75% daily.