Hi, I have bought a G Pad for my mother-in-law, and recently she started complaining on the battery life. Indeed I have noticed, that after fully charging and leaving the device idle it looses 40% of the battery over 12 hours. I have made a factory reset, but the battery has drained 12% in 12 hours with everything off and a few minutues of screen on time (only used to for the initial set up after the reset). Also I have the feeling that the drain increases with every hour.
Battery stats say that Android OS is the most heavy drainer. Do you have any suggestion how to fix this (besides trying a different ROM - i don't want to do this at the moment).
Thank you
molnartibor said:
Hi, I have bought a G Pad for my mother-in-law, and recently she started complaining on the battery life. Indeed I have noticed, that after fully charging and leaving the device idle it looses 40% of the battery over 12 hours. I have made a factory reset, but the battery has drained 12% in 12 hours with everything off and a few minutues of screen on time (only used to for the initial set up after the reset). Also I have the feeling that the drain increases with every hour.
Battery stats say that Android OS is the most heavy drainer. Do you have any suggestion how to fix this (besides trying a different ROM - i don't want to do this at the moment).
Thank you
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Try to use wakelock detector and greenify to check and stop the process that could be causing this battery drain.
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Do you have an SD card in it? Try taking it out and see if the battery drain goes away. A bad SD card will cause android to keep scanning the card...
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So I was using CM 12 for 3 weeks with no problems. Then suddenly my battery was draining faster than normal 10%/hr and so I checked my battery stats and said Android OS taken more battery life with 40% than my screen with 25%. I went back to my stock backup and I'm still having the same problem with Android OS taking 15% which is better. I did some research and couldn't find a solution but found out that wakelock is making my battery drain and kernel is the problem. So if you guys have any solutions or suggestions, I would happy to try (except factory reset)
bumo
I am seen huge battery drain on Nexus 7 2013 after flashing Android 6.0 factory image. Even battery usage option screen gives strange result. For example -- Total battery % used by all the apps just show 9%, while total battery left is only 73% after fully charging of 100%. So where is the remaining battery of 18% gone, which is not even showing up in battery uses option screen?
Attached herewith is screenshot of battery usage screen. And I really notice huge battery drain with Android 6.0 as compared to earlier Android 5.1.1.
Please help and let me know.
You're estimated time left @73% is 3 days, which means your tablet has been on and not charged in awhile. Nothing in your battery stats indicates any battery drain at all.
Sent from my Nexus 7 using Tapatalk
It just says 3 days remaining. But practically this never happens. Now overnight there is 30% battery drain without having used the tablet and it says now 43% battery remaining and one day left. And total usage mentioned by apps in battery usage screen is not even more than 15% now also. And if you add actual battery usage of all apps by clicking the indivisual battery usage details, total usage is not even 500 mAh. I believe Total Nexus 7 battery capacity is around 4000mAh.
So where is the battery use and drain is happening? This behavior I am seeing is after upgrading to Android 6.0.
I've got quite a bit of mystery drain as well. It runs flat for a little while when the display is off and it is idle for a long time, then suddenly it will just start draining ~2% per hour. The wifi lists as always on even though the policy is "Never". I have location services off, bluetooth off, NFC is off. Even more fun I put the tablet down 2 days ago at 75% battery and I picked it up this morning I picked it up and it was dead. No battery log at all either.
Hmm. I'm running stock rooted with ElementalX, and haven't had any battery issues.
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Exactly the same issue here. Battery drains fast but battery stats shows no abnormality. I work for an Android phone manufacturer. My colleague who is in charge of the battery thing guesses some hardware module might have current leakage in sleep mode which software cannot detect.
I have wiped cache partition and now see massive battery usage by WiFi after overnight. Looks to be problem stated in the thread https://productforums.google.com/forum/#!topic/nexus/NB0izQHuBaU;context-place=forum/nexus
Though this issue is raised for Nexus 5, I think it applies to Nexus 7 2013 Android 6.0 also.
You are not alone. My Nexus 7 is currently chewing through it's battery at a rate of knots. Even with the screen off it continues to use the battery as if it were on all the time. After wiping the cache partition things have become even weirder. Apps that have not been opened are using large percentages of the battery. I can barely get a few screen hours out of it.
Wondering if this thread has so few replies because people are checking the general section and seeing nothing about the issue so think it's just them?
The information on battery usage is so weird it's hard to believe that it's producing any useful or meaningful data.
Even I am surprised that no battery drain issue for Android 6.0 is reported for Nexus 7 2013 in this forum and not many members have replied to this thread.
Anyway for me it is a serious issue with absolutely no advantage in any sense for upgrading from Android 5.1.1 to Android 6.0 for Nexus 7 2013.
Here is one more screenshot of battery drain with no battery accounted for 27% (48% total battery drained - 21% battery used by apps reporting in attached screenshot).
I hope at least Google Android team is aware of this issue and knows how to resolve it.
Still amazed that there are only a handful of replies to this thread.
Got the System Update notification today. Size is of 2.2 MB. Downloaded but unfortunately battery charge was not enough to do the OTA install. Will charge the Nexus 7 2013 and install the OTA update. Let us hope that this OTA has fix for this battery drain issue. Will check and let you all know tomorrow.
Even new factory image for Android 6.0.0 build MRA58U is available now.
Same issue of battery drain with MRA58U OTA update also. 20% battery drained out during night within 7 hours when Nexus 7 2013 was idle without any activity.
Same issue here. Flashed 6.0 last weekend. 2/3% idle drain an hour while everything (bt, location, syncs, nfc) is off except wifi. Wifi keeps connected while set to go off when screen off. SoT off course hours less with the idle drain.
Same Issue battery Drain
Same issue battery drain ....i hope the lattest update send me by OTA this week resolves the problem...
I'm seeing great battery life now without root and Greenify or any third party solution but I have problems with the stats. If I let my n7 drain completely and charge it to 100% while shutdown I get +10h SOT (lowest brightness) but if I charge it from 1% without being shutdown I only get 8h SOT. Huge inconsistency in the stats, it's like the system misinterprets the stats and need a reset after every charge.
Hi!
I'm having the same problem with huge battery drain in sleep mode with my nexus 7 2013 after the update to android 6.0.1.
It is using 2-3% of battery per hour when in sleep mode, but the problem is, nothing is indicating what is causing this drain (in battery usage stats everything show as normal - no huge battery drain by the app or wifi, but something is still draining battery).
Prior to the update (Android 5) i was losing maybe 5-6% per 12 hours at most (cca. 0.5% per hour) and the tablet would last 3-4 days, now I have to charge it almost daily.
Any more news on this issue or possible solutions?
Thanks.
Nexus 7 2013 lte android 6.0.1 battery drain for me....
+1
I just turn off the wifi icon from the Quick Settings.
6.0.1 nexus 7 2013 wifi.
I downgrade to kitkat 4.4.2 and my nexus after 24 hours in standby only drain 12% battery......the problem are android 5 and 6 the tab work great and faster whit kitkat no lag or other problem
Very bad google policy
BATERY drain issue is now prominent after the MUI10 update any suggestions for overcoming it
Yeah. I'm using Masik 1.5. The charge of 60% at night is 54% in the morning.
good lost 2% at night.
i feel the same battery draining very fast compared to the nougat rom ... but nowadays its draining faster and more decreasing backup but all coming updates [emoji854]
Sent from my Redmi Note 5 Pro using Tapatalk
I'm facing a problem with battery drain on my 5t. After the update to pie I stop using greenify because I saw the new futures of the adaptive battery. But I see 12-15% battery drain with random usage in an hour. Anyone with same problem? Any solution?
same here
When going from Oreo to Pie I recommend doing a clean installation.
I also recommend calibrating the battery, let it have 0% battery, then leave it overnight charging.