Android System and Kernel (Android OS) draining battery. - Verizon Galaxy S 5 Q&A, Help & Troubleshooting

My battery has been acting weird these days, It has been losing battery when the phone is not being used. I wiped cache from recovery and it was good again, but after 1 day, the drain came back. I used GSAM to see what was draining my battery and I saw that Android System used 22% and Kernel (Android OS) used 10%, it means that both used 30 of my battery, is that normal or what ? I have 6.0.1 Thanks.

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Related

1% of the battery gone every 1min ??

I recently flashed to JM5 + Lagfix 2.3, installed a few apps and played around with the phone until it dropped to 15% battery.. charged it to 100% and went out while i was on the way to my destination i was just exploring around the UI getting to know andriod a little better and I noticed my battery % was dropping like 1% per 1min.. I have the mod for battery indicator with %. my total unplugged time was 2hrs+ my battery was down to 64%. Looking at the battery usage its saying that 75% of it was taken by the display and the run timer was 38mins.. i have the brightness level at 1/4 of the way and it seems to drain unreasonably fast.. all other process was at 2-3% usage only. This never happened when I got the phone for the first 3 days ( came with DXJG4 )
Wifi/bt/gps/autosync/bgdata are all off, using 2G network also and power saving for the display is also off.
Is my battery flakey or just the OS giving me the wrong information ?
Ok so i wiped my internal SD card and reflashed JM5 + repartition again and after booting my battery when to 68% from 53%..
EDIT:
Rebooted the phone and im now getting 56% LOL!
There's a thread about resetting your battery threshold in the development section. Try that.
previously when i reboot my phone, it'll fly from ~20% to ~50% lol. it's just some calibrating issue i think. i drained it to ~5% then charged it up until it NOTIFIES me that it's fully charged(ignore the battery meter / %), wait for the popup thing specifically.
works fine for me.

Android system battery drain

Hi,
Im getting bad battery life in the past 2 months, I tried to flash the latest stock rom, rooted the phone and deleted bloatware, and im also using greenify.
after doing all of those things im still having trouble with battery drain.
at GSAM battery monitor it says that the app usage is 62% (screen is 31%)
20% goes for Android system, and 13% goes for Kernel (Android OS)
at settings - Android system 25%, 15% android os, compared to 15% screen.
Is there anything left that I can do it order to fix this?
TheNewLegend said:
Hi,
Im getting bad battery life in the past 2 months, I tried to flash the latest stock rom, rooted the phone and deleted bloatware, and im also using greenify.
after doing all of those things im still having trouble with battery drain.
at GSAM battery monitor it says that the app usage is 62% (screen is 31%)
20% goes for Android system, and 13% goes for Kernel (Android OS)
at settings - Android system 25%, 15% android os, compared to 15% screen.
Is there anything left that I can do it order to fix this?
Click to expand...
Click to collapse
1) BetterBatteryStats: http://forum.xda-developers.com/showthread.php?t=1179809
2) Settings -> Battery -> Top item -> Open -> List the processes here

LG G6 - Battery drain by System Android and Kernel (Android OS)

Hi, I can't figure why System Android and Kernel (Android OS) is always on top of the battery usage list. I can't even get 5h SoT and it's hard to hit 24h on single charge. I don't use Facebook and other draining apps and of course I'm using Greenify and Aggressive Hibernation.
I also noticed that battery drain is almost the same when I'm browsing web and playing Asphalt 8!!! Is it normal on this phone?

Battery percentage issue on z17s

Hi.
Yesterday I was using my Nubia z17s as always and before going to bed I decided to charge it, since battery was at around 20%.
When I connected the charger, the screen went off and it didn't wake up, no matter what I did, although I could feel the fingerprint scanner vibration when I used any of the registered fingers. So I decided to hard reboot the phone by keeping the power button pressed.
To my surprise, when the phone booted again, the battery percentage showed 3%. I left it charging overnight and now it's working but the battery percentage is stuck on 3%. I'm pretty sure it's more than that, since I've been using the phone for more than 6 hours and the battery percentage hasn't dropped a bit, and the phone is working (I've made an received a few calls).
A guy at work suggested letting the battery drain completely until the point the phone shuts itself down, and then charging the phone up to 100% while off, so the battery is calibrated and the percentage is fixed. But I've always heard that it's not a good idea to let a battery drain so much. Another problem is that I fear not being able to charge the phone again once the battery gets below 3%.
Any ideas? The phone is running latest Mokee 9 Premium.
Thanks in advance.
Remove "batterystats.bin" in the System folder
Tomcar said:
Remove "batterystats.bin" in the System folder
Click to expand...
Click to collapse
I had already tried that. But deleting that file just resets the battery usage statistics. It has nothing to do with the battery percentage
It seems to me that you will have to make a full data backup and perform a factory reset.
ps and which firmware in use?
Hi, I forgot replying.
I finally got the phone up and running again, and the issue seemed to be firmware related.
I was running the phone on Android Pie based Mokee ROM. I finally let the phone discharge until it shut down and charged it while off. Battery got up to 100% and the phone seemed to work fine. But, a few weeks later, something similar happened again, so I reverted to the stock firmware (still stuck at Android 7.1.1) and the battery issues went away.
I recently tested the Android 10 based Mokee and found that it reports battery level very differently than the stock firmware. Before flashing TWRP and the Mokee ROM, the phone was showing 88% battery left. Just after booting Mokee, the phone had apperently dropped to 78% and I also felt quite a huge battery drain. And it had only taken me around 5 minutes to install the recovery and firmware. So I guess the Mokee firmware doesn't handle the battery very well on Nubia z17s. It's a pity, since all the rest works very well, and I quite liked the Android 10 experience. On the other side, I was unable to make Magisk work under Android 10, and Google Pay is a must for me now, so I once again went back to stock firmware.

is it battery problem or hardware problem?

device battery started draining so fast from past 1 week. phone always stay hot even in screen off state. first i thought it was custom rom problem so i tried android 11, few roms in android 10, stock android 10, stock pie then went back to clean flash oreo so many times then clean flashed pie stock also qfil flashed but result was always same device stays hot and drains battery.
the discharge rate was 10% per hour on screen off and 17% when screen on. i was thinking to change battery but device always stay hot seems like hardware problem. i don't want to lost money for battery if it is hardware problem. accubattery says my battery health is 90%.
right now im using nusantara project android 10 without gapps. using very few apps with always power save mode on in kernel holding battery drain 50%. now heating and draining is less like 5% drain per hour in sleep mode.

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