Battery drain even when phone is switched off - Samsung Galaxy A3, A5, A7 (2017) Questions & Answe

Hi, I've been experiencing an issue with my a5 2017 for the past few days. The battery has been draining a little faster than usual. Battery drained 30% even when phone was properly switched off. Battery also discharges a lot when phone is idling. Need help! Thanks!!

I have the same issue. A fully charged battery will only last me 12hr52 minutes even with power saving mode on. I've Aleši tried the usual stuff - factory reset, clear cache etc but to no avail.

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Battery Issues (calibration?)

Hey XDA, I just purchased a new AT&T SGS3 and I'm having some issues with the battery on the phone.
When I charge the phone overnight it charges to 100% then when I unplug it, the battery drops tremendously in about 5 seconds down to anywhere from 50%-75%. I tried manually recalibrating the battery by charging it 8+ hours, removing the battery, charging again while off, charging it again while on, then restarting. That seemed to work for one charge and the battery acted the way that it would have on my Nexus S.
However charging it again after a full battery drain, the same thing happened.
Also when the phone is low on battery, it displays the normal battery messages, but then the screen stays on, draining the battery faster.
Solutions? I want the root the phone, but only after I have these issues sorted out. (I'm still under warranty right now)
zobbyblob said:
Hey XDA, I just purchased a new AT&T SGS3 and I'm having some issues with the battery on the phone.
When I charge the phone overnight it charges to 100% then when I unplug it, the battery drops tremendously in about 5 seconds down to anywhere from 50%-75%. I tried manually recalibrating the battery by charging it 8+ hours, removing the battery, charging again while off, charging it again while on, then restarting. That seemed to work for one charge and the battery acted the way that it would have on my Nexus S.
However charging it again after a full battery drain, the same thing happened.
Also when the phone is low on battery, it displays the normal battery messages, but then the screen stays on, draining the battery faster.
Solutions? I want the root the phone, but only after I have these issues sorted out. (I'm still under warranty right now)
Click to expand...
Click to collapse
Did you try a reset of the phone through the settings ? After that try charging to 100% then drain completely and then recharging without break then use the phone mormally and try to recharge only when it hits 10% remaining for the next 2 or 3 charge cycles and see if that helps
zobbyblob said:
Hey XDA, I just purchased a new AT&T SGS3 and I'm having some issues with the battery on the phone.
When I charge the phone overnight it charges to 100% then when I unplug it, the battery drops tremendously in about 5 seconds down to anywhere from 50%-75%. I tried manually recalibrating the battery by charging it 8+ hours, removing the battery, charging again while off, charging it again while on, then restarting. That seemed to work for one charge and the battery acted the way that it would have on my Nexus S.
However charging it again after a full battery drain, the same thing happened.
Also when the phone is low on battery, it displays the normal battery messages, but then the screen stays on, draining the battery faster.
Solutions? I want the root the phone, but only after I have these issues sorted out. (I'm still under warranty right now)
Click to expand...
Click to collapse
Looks like a bad device. I would send it in if i were you.

[Q] My phone heats up and drains my battery even when phone is off

My htc desire HD gets unusually warm at the bottom close the sim compartment and drains my battery thats 100% charged in just an hour and few minutes. Even in airplane mode.
Whats worse is even when the phone is put off it still gets warn and my battery drains, I have tried everything possible to fix the problem from buying a new battery to installing battery saving apps and even flashing roms and even stock roms but Nothing works.
When i check whats using up the battery, it shows that the screen uses about 76% of the battery even when my backlight is deemed to the lowest.
Pleaze has anyone had this sort of pblm before? could it be a hardware pblm since the phone still gets hot when the phone is put off and the battery still gets drained.
Wipe Battery Stats
Try wipe battery stats in ClockworkMod.

Poor battery since 6.0.1?

So I updated my phone tonight and after it used 30% in an hour or so. All I was doing was using FB on it. Prior I played PAD for 15 minutes and it hardly used 5%. I've wiped cache, cleared app cache, and now I'm working on a full discharge from 100%. The battery is brand new and it was getting better life prior to the upgrade. So much for 3x better battery I guess?
After clearing caches I left it idle ofer night. It used 13% for 20 minutes of screen time. and then it used 3% idle over the 5 hours I slept. Still seems a bit high on usage for screen time but idle is great.
So I discharged it completely and now its losing power fast again. The battery was 100% unplugged it and turned it on and its 97%. So I turned it back off and checked it and its also showing 97%. Charge it back to 100%, turn it on, its on 100% but loses 1% in a second. Plugged it in while onand it took like 3 minutes to charge that last 1%/ No idea why. The battery is brand new and got 2 or 3 days on idle before, now it reports 20 hours. what happened to that 3x better battery? What else can I do to sync the battery properly? I also noticed 100% is not 100% until the phone tells me battery is charged.
Again this battery is brand new and my life with 5.1.1 was pretty good.
I've been having poor battery calibrations in EPH7, though my battery is still what came with the phone.
There are days I can get to about 5? left before the phone dies, and there are days it dies at 15?..
Already tried charging all the way till full while the phone was off, still the same. It's random, but I just generally expect the phone to turn off as I come close to 15?.
boofman said:
I've been having poor battery calibrations in EPH7, though my battery is still what came with the phone.
There are days I can get to about 5? left before the phone dies, and there are days it dies at 15?..
Already tried charging all the way till full while the phone was off, still the same. It's random, but I just generally expect the phone to turn off as I come close to 15?.
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Click to collapse
That sounds like a bad battery. I can get my phone to drain down to 0% before it dies, but the battery usage can be erratic.
After some testingm the first 5% (95-100%) does down fast but after that it can go a pretty good while. Not sure why. I left the screen on with max brightness, turned on NFC/wifi/bluetooth and just left tons of apps running and it took 4-5 hours to get the battery down to 20%. the life is in fact great just not properly synced. No root makes it more of a pain to calibrate.
So I charged the battery offline and it got to 100%. I switched it on and it shows 97%. What the hell has marshmallow done to my note?
last post. If I charge the phone formt he OS it reaches 100% seemingly properly and doesn't discharge quickly. Not sure what marshmallow screwed up.
I had the same issue with my battery draining quickly after the upgrade. I backed up all of my data and then performed a master rest of the phone and then went into recovery and cleared cache as well. Once it booted back up I reloaded all of my apps and reconfigured all my accounts and my battery acts normal once again. It was a pain in the ass to do all of that but it did work for me so hopefully it works for you too.

A5 (2017) battery drain after nougat, factory reset done

Hello,
I have upgraded my phone to the Nougat, and it started discharging much faster. While on AOD, it discharged 1% in 30mins with everything turned off, and 1% while searching where to write a thread about it. Also, before factory reset, while on 4G and on Chrome, it would discharge much faster than it should, as read in reviews. I got it yesterday, as present for Christmas. Thanks
I would wait few days, so the battery can settle down.

Battery drain issues

For last two weeks i was experiencing issues with high battery drain. My phone can discharge 5% in minute when it is locked and screen is black and when I am using it battery drain is even worse. It happend like snap of the fingers cos I woke up and this started happening and in addition fast charging stopped working. I haven't updated or changed anything. One day it was fine and second day this occurred. I figured out that it can be related to error in my os but after cache clear, factory reset, and kernel reinstall nothing changed. I checked my battery usage and two of Android os processes used 20% of my battery, cell standby used 10%, screen used 8%, and idle phone process used 2%. What can cause this issues?

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