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So im at a convention thisweekend and its been a while since I flash my rom to 3.2 freshbaked. This weekend I notice straight from 100% I was burning through most of it in 6-7 hour with out alot of usage. I took my phone out at 11:30 today and its only 4 and im already down to 36%. My battery usage shows 36% from system 22 from cell standby with 0 signal lost and 21 idle. Ill flash an updated rom when u get back.
Sent from my PC36100 using XDA App
flashed new 3.3.0 fresh and after a full charge i've left it idle for 2 hours and i've already drained 20% of the battery. That roughly 10 hours of doing nothing and my phones dead.
It could be some app you are using/installed.
I recently flashed Fresh and expierenced the same situation . My Android system was always the highest on the list . I removed apps and stripped it down , I wiped Dalvik and Cache you name it and the phone could sit idle and the Android system would be as much as cellstand by if not higher . I eventually just went back to stock Froyo with root . Android system now sits lower than cell stand by and phone idle
I'm using the newest fresh Rom with kings 9 kernel and set CPU. I never been a heavy user but I'm sitting at 19hrs and 43% I took it off the charger around 3pm Saturday and have not charged it since.
Sent from my PC36100 using XDA App
fresh 3.3, and netarchy's 4.1.9.1 fresh comp kernel, run your battery down to 3%, once there, boot into recovery, wipe your battery stats, and then reboot, once you reboot you may only get as far as the lockscreen before it shuts off, then either swap in a spare fully charged battery, or fully charge your battery with the phone turned off.
This is insane I'm currently Losing 1. 5. % a minute. Took it off 8 minutes ago and its down to 86 with 70% system usage
Sent from my PC36100 using XDA App
What is your signal like in the building? I had a similar issue when I couldn't get a good signal. The phone would last four hours just sitting on my hip.
topdawgn8 said:
What is your signal like in the building? I had a similar issue when I couldn't get a good signal. The phone would last four hours just sitting on my hip.
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usually full bars.
mystax said:
usually full bars.
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whats the Up & Awake times?
with 22% left i unplugged it around 6 hour ago.
My Uptime is 27:13:36
Awake - 4:19:58
36% Cell Standby
30% Idle
22% System
7% display
5% voice call.
I bought a big ass battery, problem solved...
installed collins battery mod hope this works.
After installing build 31 my battery life drained pretty quick. Anyone else have that issue?
I went back to build 30 to double check. Usually I can get a few days of normal use, but I am talking dead in 10 hours with light use, just idle.
Dirty_sun said:
After installing build 31 my battery life drained pretty quick. Anyone else have that issue?
I went back to build 30 to double check. Usually I can get a few days of normal use, but I am talking dead in 10 hours with light use, just idle.
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Actually having better battery life with build 31. Noticed a drain on 30 but on 31, the eight hours I was at work, the idle tablet at home dropped less than 5%.
Not mine. It drained on idle. Put 30 back on and gave it a full charge. I will see how that works.
Sent from my GT-P7510 using XDA
I have heard more of these complains on different ICS builds but apparently they disappeared after reboot/recharge.
To further improve battery life you can check if the tablet goes to deep sleep via settings>battery and clicking on the graph. Now you see if it is going to deep sleep, mine was not because of a service which was running (Ubuntu One).
Use a good taskmanager and kill untill you find which one is preventing it from deep sleep.
Same here. Got home from school and it was dead.
Sent from my SAMSUNG-SGH-I727 using xda premium
You can use cwm and the wipe battery stats option to increase your battery life when using a custom rom. Simply charge to 100% and enter recovery and select wipe battery stats (or something similar to that)
I'm on build 32 and my battery life seems to be fine so far, device goes in deep sleep as it should
Im not sure what classes as good battery life on the N7. But after looking at other peoples reports im convinced mine isn't that good.
Im using CM10 and Trinity Kernel, both latest versions.
As of now these are my stats.
Screen on 3 hours
20 Hours on battery, with 16% left.
Anyone any advice or tips?
superleeds27 said:
Im not sure what classes as good battery life on the N7. But after looking at other peoples reports im convinced mine isn't that good.
Im using CM10 and Trinity Kernel, both latest versions.
As of now these are my stats.
Screen on 3 hours
20 Hours on battery, with 16% left.
Anyone any advice or tips?
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IMO not good at all. How long since you flashed the rom/kernel?
I usually give it a few charging cycles before judging a rom/kernel to be good or bad
Obviously everything depends on your bightness levels, clock speed and undervolting.
What clock speed are you running at? I am on AOKP and using faux's kernel at 1.2GHz and battery is double yours. My brightness is quite low though
Also depends on what you're doing on it
Auto brightness.
TKT App, limiting it to 1150Mhz. UV by 25mv.
Basic browsing, facebook, twitter etc. Odd game for 5-10 mins.
Flashed the ROM & Kernel Yesterday, but its being acting like this for a while on previous ROMs tbh.
Consider using BetterBatteryStats: http://forum.xda-developers.com/showthread.php?p=15869868 to find what could be the cause.
Sent from my Nexus 7
yeah going to look into that.
For now, ive changed my kernel to Faux, and undervolted by 75mv. Also changed the limit to 1.1Ghz, using System tuner.
Going to charge to 100%, calibrate, and then install betterbatterystats to see what causes it. Noticed my unit seems a little warm, well, System tuner reporting it at about 45C, but then that could be because ive been using it for a good 10-15 mins installing and setting things up. (Also using a Gel case, guessing that wot help heat escaping!)
Well that's not too bad mines at 12 hrs and 37% but Im constantly on mine all day
Sent from my Nexus 7 using xda app-developers app
Okay.... have an issue!
Have been using the Nexus 7 happily today, got it down to 6% and it switched off by itself. I don't mean powered down, it simply died.
1. Plugged in the mains lead and tried to boot up but it wouldn't.
2. Tried again 5mins later and this time it showed the white battery charging icon so I left it.
3. Came back 2 hours later and with it still charging I powered it back up, only after it had loaded the battery percentage has only increased to 8%
So, anyone care to help me out here...... has anyone else experienced this?
Just had another peek (it's now been another 30mins which means 2hrs 30mins on charge) and it's only increased by 1%.
So from 6% when it died to 2hrs 30mins later on charge it's only risen 3%
It's a stock 16GB device.
Hey,guys! I'm having some problems with my g2 lately. For two weeks now I have been having severe battery drain. When I open the battery menu it says that android system is using 25%,sometimes drops to 22%,sometimes goes up to 30%. The screen usage varies. I don't know what to do. I can barely get 3 hours screen time,most of the time i get 2 hours. Last night I left my phone at 12AM and I had 40% battery. Haven't been using it till I woke up and when I woke up the battery was dropped at 16%. That is just extreme! Any advice?
Turn off locations.
Long press power off and reboot to safe mode for a couple of hours. If bad battery continues just perform factory or hard reset and it will be fine. If battery life is good in safe mode then some app is eating your juice (no pun intended).
Sent from my LG-D802
mwedo gave some solid advice:
How to get into safe mode: http://forum.xda-developers.com/lg-g2/general/guide-enter-safe-mode-stock-roms-t2812170
Some of these might help too: http://forum.xda-developers.com/showthread.php?t=2617130
Android system draining 30% is not too abnormal if you're stock If you need any help post in the threads =)
bettina333 said:
Hey,guys! I'm having some problems with my g2 lately. For two weeks now I have been having severe battery drain. When I open the battery menu it says that android system is using 25%,sometimes drops to 22%,sometimes goes up to 30%. The screen usage varies. I don't know what to do. I can barely get 3 hours screen time,most of the time i get 2 hours. Last night I left my phone at 12AM and I had 40% battery. Haven't been using it till I woke up and when I woke up the battery was dropped at 16%. That is just extreme! Any advice?
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Hope you wiped cache .
Install clean master feom plan and let it scan. Follow suggestion promted also install grenify app (requires root) and hibenate the app which runs constantly. For this check app running section in settings. A
You can also have titanium backup to feeeze apps which you do not use and see them running to save some juice
Sent from my LG-D802 using xda premium
Hey guys i got a s4 for free a few weeks ago and the battery was having issues so i brought a new battery from Samsung for $50. I guess the phone is $50 now huh, still that's a good price. Anyway i have an improvement in standby time over the old battery that seemed to drain no matter what, but i only get around 2hrs to 3hrs screen on time full brightness with a mix of auto. The phone tends to get warm when its below 40% power. Also using the phone drains it at a fast rate, but standby only 1% per 8mins or so witch is good. Im backing up with twrp and titanium backup, ive tried recalibration, and im about to do a factory reset on this (stock touchwiz)
Sent from my LG-D320n using Tapatalk
Battery calibration apps are a placebo.
Anyway, let me tell you a little story:
2 weeks ago I watched a 2 hour movie on my phone. Started from 100% ans towards the end of the movie I was left with about 50% battery.
Screen brightness was around 60%, WiFi was enabled and the mobile reception was 4G.
All things considered I would assume I can get 4 hours SOT, since it took 2 hours to get from 100 to 50.
This is on a custom rom and battery oriented kernel settings.
Also take into account that I was watching a movie, so the CPU was idling most of the time. Doing tasks and switching from one app to another drives the CPU up.
Your screen-on time seems acceptable to me. I have to mention that my battery is one and a half years old, but I always took good care of it (I never let it discharge too much and never left it charge too much, as both of those, over time, can reduce its storage capacity).
Im using Albe95 rom with a custom kernal and the battery is draining slightly less, ive reduced my brightness to 60% and its drained from 100% to 77% in standby and extremely light use in 6hrs (about 4hrs standby drained 6% and 2 hrs of on off use every now and then drained about 17%. I guess im used to my old LG L70 D320n witch could hold up at full brightness forever. Will Cyanogenmod 13 bring much improvement for me?
Tweakforce_LG said:
Im using Albe95 rom with a custom kernal and the battery is draining slightly less, ive reduced my brightness to 60% and its drained from 100% to 77% in standby and extremely light use in 6hrs (about 4hrs standby drained 6% and 2 hrs of on off use every now and then drained about 17%. I guess im used to my old LG L70 D320n witch could hold up at full brightness forever. Will Cyanogenmod 13 bring much improvement for me?
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I don't know. Maybe Optimized CM13 because it has a custom kernel and you can select battery or performance profiles.
GDReaper said:
I don't know. Maybe Optimized CM13 because it has a custom kernel and you can select battery or performance profiles.
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I still dont get why i should have to do that with a BRAND NEW battery
Tweakforce_LG said:
I still dont get why i should have to do that with a BRAND NEW battery
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You won't miraculously get 5-6 hours SOT even if the battery is new.
Maybe with lowest brightness, WiFi and mobile data off you will.
Underclocking and undevolting might help a little, but I don't see anyway of getting more than 5 hours.
GDReaper said:
You won't miraculously get 5-6 hours SOT even if the battery is new.
Maybe with lowest brightness, WiFi and mobile data off you will.
Underclocking and undevolting might help a little, but I don't see anyway of getting more than 5 hours.
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Thats not the problem, im bearly reaching a bit over 1 and a half hours SOT
Tweakforce_LG said:
Thats not the problem, im bearly reaching a bit over 1 and a half hours SOT
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There's a guide in the general section, _Bon_Bon's tweaks.., Something along those lines is the title.
It has a guide on how to increase battery life.
The guide is based on alucard kernel, though.
Alucard kernel is available for any 5.0 and 5.1 roms. But there is no public build for android 6.
Only JDCTeam roms have alucard kernel for android 6. Those roms are Optimized CM13 and AOSP 6.0 rom.
GDReaper said:
There's a guide in the general section, _Bon_Bon's tweaks.., Something along those lines is the title.
It has a guide on how to increase battery life.
The guide is based on alucard kernel, though.
Alucard kernel is available for any 5.0 and 5.1 roms. But there is no public build for android 6.
Only JDCTeam roms have alucard kernel for android 6. Those roms are Optimized CM13 and AOSP 6.0 rom.
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Will take a look thanks
Sent from my LG-D320n using Tapatalk
GDReaper said:
There's a guide in the general section, _Bon_Bon's tweaks.., Something along those lines is the title.
It has a guide on how to increase battery life.
The guide is based on alucard kernel, though.
Alucard kernel is available for any 5.0 and 5.1 roms. But there is no public build for android 6.
Only JDCTeam roms have alucard kernel for android 6. Those roms are Optimized CM13 and AOSP 6.0 rom.
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Ok so slowly things have improved but today when it was at 9% (6:30pm charged this morning) it froze up and i pulled the battery. Then it jumped down to 2% at restart! This has happened before (cant remember if it was on stock rom or the note 5 rom im using on it now) from 40% freeze, pull battery, restart, 22%! Any idea why this happens. I talked to samsung about the battery performance and they just wanted me to send the phone too as "its not just the battery" just for more money instead of honering their 3 month ****ty warranty! Stick it samsung my next phone will be lg like the rest, even though i only just brought this damn phone
Sent from my LG-D320n using Tapatalk
Tweakforce_LG said:
Ok so slowly things have improved but today when it was at 9% (6:30pm charged this morning) it froze up and i pulled the battery. Then it jumped down to 2% at restart! This has happened before (cant remember if it was on stock rom or the note 5 rom im using on it now) from 40% freeze, pull battery, restart, 22%! Any idea why this happens. I talked to samsung about the battery performance and they just wanted me to send the phone too as "its not just the battery" just for more money instead of honering their 3 month ****ty warranty! Stick it samsung my next phone will be lg like the rest, even though i only just brought this damn phone
Sent from my LG-D320n using Tapatalk
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The freezes might be caused by CPU undervolting, if you did any.
But the battery percentage dropping suddenly is a sign of a bad battery. It might drop 2 or 3% during the boot up, but not 20%.
GDReaper said:
The freezes might be caused by CPU undervolting, if you did any.
But the battery percentage dropping suddenly is a sign of a bad battery. It might drop 2 or 3% during the boot up, but not 20%.
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Samsung say the phone is the problem. Today i got to 40% and it jumped to 30% within 20 mins. Then i pulled the battery and started the phone up, repeating this multiple times to see the battery percentage. It jumped between 24% 15% and 19% up and down each time i pulled battery and restarted (no crashing just to see what happens). Is this enough to tell Samsung ITS NOT MY PHONE.
Sent from my LG-D320n using Tapatalk
Tweakforce_LG said:
Samsung say the phone is the problem. Today i got to 40% and it jumped to 30% within 20 mins. Then i pulled the battery and started the phone up, repeating this multiple times to see the battery percentage. It jumped between 24% 15% and 19% up and down each time i pulled battery and restarted (no crashing just to see what happens). Is this enough to tell Samsung ITS NOT MY PHONE.
Sent from my LG-D320n using Tapatalk
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Apparently they refuse to accept the possibility that they might have sold you a faulty battery, so they blame the phone.
I don't see how the phone might drain the battery from a hardware perspective.
It's possible from a software perspective, but since you changed roms it is unlikely to be software related.
Did you install any apps to check if the phone enters deep sleep? Or if there is anything keeping the CPU at max frequency?
GDReaper said:
Apparently they refuse to accept the possibility that they might have sold you a faulty battery, so they blame the phone.
I don't see how the phone might drain the battery from a hardware perspective.
It's possible from a software perspective, but since you changed roms it is unlikely to be software related.
Did you install any apps to check if the phone enters deep sleep? Or if there is anything keeping the CPU at max frequency?
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Wake lock doesnt find anything strange. Even twrp battery indicator in my custom recovery experiences the same effects
Sent from my LG-D320n using Tapatalk
Ok ive done it a few more times and it seems to possibly be a calibration issue. But ive calibrated it multiple times before
Sent from my LG-D320n using Tapatalk
Tweakforce_LG said:
Ok ive done it a few more times and it seems to possibly be a calibration issue. But ive calibrated it multiple times before
Sent from my LG-D320n using Tapatalk
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How did you calibrate it?
Battery calibration apps are a placebo. What they do is they delete the batterystats.bin file which, as stated by a Google engineer, has no relation to battery life or the battery display.
Also, that file gets deleted automatically at every reboot by android itself.
What you could do is:
First let your battery fully discharge, until the phone turns off. Then try to turn it back on. If it turns on, proceed to use it until it turns off again. Do this until the phone won't turn on again.
Now the battery is completely empty and you can plug it in to charge. Let it charge to 100% without interruptions.
Take into account that it can take up to 3 hours to fully charge.
GDReaper said:
How did you calibrate it?
Battery calibration apps are a placebo. What they do is they delete the batterystats.bin file which, as stated by a Google engineer, has no relation to battery life or the battery display.
Also, that file gets deleted automatically at every reboot by android itself.
What you could do is:
First let your battery fully discharge, until the phone turns off. Then try to turn it back on. If it turns on, proceed to use it until it turns off again. Do this until the phone won't turn on again.
Now the battery is completely empty and you can plug it in to charge. Let it charge to 100% without interruptions.
Take into account that it can take up to 3 hours to fully charge.
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Haha done this before to no avail. Will do again but i noticed battery life is generally better if i leave it charging for 10hours after its charged fully. Instead of taking it off when it gets to 100% but i think a long worded and very angry email is about to be sent to the Samsung repair centre
Sent from my LG-D320n using Tapatalk
on my travels around google I've read many times that with lithium batteries you NEVER want to completely discharge or overcharge them. give it 10 minutes extra once fully charged, not more. you're damaging the poles or terminals or something I can't remember fully when at either extreme. all you achieve is a shorter lifespan for your battery.
discharge it until it turns off but never until it can't turn on again. it has a chip in the battery that needs to stay powered too.