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[Q] I need help with my tablet draining battery too quickly

Hi, I'm having a serious issue here. I unplugged my Transformer from my charger about about 11am today. I have used it, according to the screen on time in the settings, for 34 minutes. (it's now about twelve hours later.) However, the battery life is at 64%. I just don't understand this. My wi-fi is set to disconnect when screen turns off, and brightness is at about 55-60%. But look at this.
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Does anybody have a clue what could be going on? If you need more information about what state it is in, I'll be glad to provide more details. It seems like this started after I updated to 3.2, but that could be unrelated.

After updating did you set up the wifi power saving again? There is a bug in android where this setting gets reset when the device is rebooted

AustinMartin said:
After updating did you set up the wifi power saving again? There is a bug in android where this setting gets reset when the device is rebooted
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Yeah, I double checked when I posted this and it was still on "when screen turns off".

Try using juice defender. And check your running services/applications/auto sync cuz i see there alot of wifi actifity and your device is awaken even though the screen is off.

You could try using an app called Sysem Panel by NextApp.
You will need the paid version so that you can turn on the Monitoring option in the settings - this allows you to monitor the CPU usage over 2h/8h/1d/3d.
You can also monitor Top App usage of CPU which is fantastic for identifying the culprit.

Battery Usage Stats missing items

I'm finding that the Battery Usage Stats are always missing apps from the list as posted below. Can anyone else confirm what they see on 2.3.4 ROMS and state whether it's OTA/Stock or custom. Thanks.
http://forum.xda-developers.com/showpost.php?p=16795324&postcount=4559

It is working here.
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I think apps won't show because in comparison to the screen, WiFi and Android OS they use almost no power. Apps eventually do show when they are used more intensively.
However if you want to monitor which apps use most power, I suggest you use BetterBatteryStats (xda-topic). This will let you track apps who wake your phone and which apps draw most power. It's a very useful app.

The_Worst said:
It is working here.
I think apps won't show because in comparison to the screen, WiFi and Android OS they use almost no power. Apps eventually do show when they are used more intensively.
However if you want to monitor which apps use most power, I suggest you use BetterBatteryStats (xda-topic). This will let you track apps who wake your phone and which apps draw most power. It's a very useful app.
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What ROM are you running?
I've just had beyondpod playing with presto playback speed plugin for the last 90 minutes with screen mostly off and see the attached. There's definitely something amiss as I've seen them listed before and look how much they've drained my battery since the last screen grab posted above.

Random battery drain. Please look at pictures

I have been running CleanRom 3.0 for about 7 months now and have been getting great battery life. For the last week or so I have been getting horrible battery life and i cannot figure out why. I have not done anything different or added any apps since the fall. I have done all the tips and tricks to saving battery ....display set at 10%/30 seconds, All notifications turned off, gps off, bluetooth off etc... I can usually get an average of 22 hours before needing to look for a charger.
Today:
10.5 hours and 12% left. Not even 2 hours of screen time. I have phone forced on 3g and get good reception at my home where I was for most of the day.
Can someone please give me some insight here? maybe I'm missing something??
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Maybe your battery itself.
There are far to many variables that play a part in battery life.
Look into 5.6 and remember to toggle off data and WiFi when not in use.
Worth a try.
Edit: now I clearly see you toggle WiFi and data off when not in use. Haha sorry.
Sent from my SCH-I535 using xda app-developers app

barrackOBAMA said:
Maybe your battery itself.
There are far to many variables that play a part in battery life.
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Agreed, try changing kernel or kernel settings, gov types, speeds, tweak options.
Sometimes it take alot of trial and error to figure out the best rom/kernel combos. May also have to change a few things in the rom and/or kernel to do so. Goodluck!

You can try an app call "Better Battery Stats"

Wifi/Android System/ Android OS problems.

Hi, I need help on this. It has been days since my battery has gone haywire and I don't know what happened. I just saw that my WIFI isn't turning off even though i toggled itoff in settings/quick settings. I thought maybe a simple reboot may fix it but no. I came from CO12 to Exodus to Bliss but all have the same problems. Wifi isn't turning off! All my settings are stock. Kernels are stock also. I'm getting an average battery life of 3 1/2 hrs SOT which is awful for my usage. Also AndroidSystem and OS is killing my battery but I disabled Google PlayServices which should help. My only concern is the Wifi not turning off. Pls help thanks
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Hi.
I use this app wich does only cut on and off the network: https://play.google.com/store/apps/details?id=com.a0soft.gphone.aDataOnOff&hl=en
(you can also apply a screen filter to help stop battery drain)
But I doubt its your only problem... I tested with and without the app, and the difference is almost not visible. Also, my wifi (when app off) is in third place on battery usage, and I have at least a good 5-6 SOT..
(Blisspop - renderkernel R7)

Some people say that it is a common bug in Android 5.0. Can anyone confirm?

ken_alpha24 said:
Some people say that it is a common bug in Android 5.0. Can anyone confirm?
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The known bug with wifi is not battery drain but the difficulty to connect, to link the network.

APP [4.0+] Shakey Wakey - Shake to turn screen on

This app simply lets you shake your phone to turn the screen on (whilst the screen is off). Very simple, lightweight and easy to use
The interface simply lets you enable or disable Shakey Wakey and adjust the shake strength required to shake your screen on :highfive:
This app is super useful for quickly checking your lock screen or unlocking your phone when wearing gloves or if you have a broken power button or if you just like the ability to shake your phone to wake it. The feature is inbuilt into a few devices but not many so this app will be useful to most Android users!
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I've included the lock screen notification too so that you know Shakey Wakey is available- let me know if you'd prefer to see this hidden in a future update.
More info and download available via the Play Store: https://play.google.com/store/apps/details?id=shake.to.wake
Alternatively you can direct download the attached APK
*EDIT 24/04/2019 Updated APK to support newer versions of Android. Recommend that you disable battery optimisations for the app for a reliable performance. Responsiveness in background and screen off varies by device.

Very interesting! How is the battery consumption?

Slagathor said:
Very interesting! How is the battery consumption?
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Battery consumption on my S8 has been good so far :good: - to be honest I haven't noticed any difference in my battery life when using this.
I'll try to gather better stats to include soon.