Database Users

Advice on Battery

Hello All,
I'm in need of advice if this is down to battery calibration or I have a faulty battery.
I got a replacement Nexus 4 3 days ago and I have been using it as normal. But I have noticed something strange going on with it.
I charged my phone to 100% and put my phone into airplane mode overnight, as I did with my Galaxy Nexus (It saves battery and I have a house phone for emergencies if somebody wants to contact me). I wake up the next morning around 9 hours later, I lose 1% battery which is normal, but when I use the phone for, say, 20 seconds, the battery instantly drains down to 95%. When I turn the screen off, and leave it until I get into work. I get into work 30 minutes later, turn the screen on and use it for a further 40-50 seconds, the battery then goes down to 92%, and the same thing goes throughout the day. I'm currently at 77% which only 12mins screen on time.
Would this be down to calibration? I haven't actually calibrated the battery and I rooted and flashed a custom ROM on the first day.
I had similar issue on my old, broken Nexus 4 so its not a coincidence.
Any help is appreciated.
-N

I wouldn't worry about it. It's common with new phones (and new ROMs mind you) for the battery life reading to be a bit weird. Ultimately you'll still get the same battery life as normal, it's just the reading that will take a little time to become accurate as it calibrates itself.
Try Batterycalibration:
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
When I first got an extended battery for my old Xperia X10 I would often see the battery life *apparently* going up after going down, without actually charging.

OverTheBelow said:
I wouldn't worry about it. It's common with new phones (and new ROMs mind you) for the battery life reading to be a bit weird. Ultimately you'll still get the same battery life as normal, it's just the reading that will take a little time to become accurate as it calibrates itself.
Try Batterycalibration:
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
When I first got an extended battery for my old Xperia X10 I would often see the battery life *apparently* going up after going down, without actually charging.
Click to expand...
Click to collapse
Thanks for this. I'll check it out.

Reminds me about HTC Sensation. It behaved so strangely with the battery readings. Jumped many percentages at once, or stayed at 100% for a while. Also after rebooting, the reading might have been quite different each reboot.
I truly, deeply, did NOT like it. It was horrible to keep track of the real juice level the battery had.
So I wonder if anyone else is seeing this behavior?

weird im getting 2 days usage with average use im really happy with the phone and battery

Fihlvein said:
Reminds me about HTC Sensation. It behaved so strangely with the battery readings. Jumped many percentages at once, or stayed at 100% for a while. Also after rebooting, the reading might have been quite different each reboot.
I truly, deeply, did NOT like it. It was horrible to keep track of the real juice level the battery had.
So I wonder if anyone else is seeing this behavior?
Click to expand...
Click to collapse
Same with me when I had a sensation. It would also randomly turn off.
Sent from my Nexus 7 using xda premium

Nitroz said:
Hello All,
I'm in need of advice if this is down to battery calibration or I have a faulty battery.
I got a replacement Nexus 4 3 days ago and I have been using it as normal. But I have noticed something strange going on with it.
I charged my phone to 100% and put my phone into airplane mode overnight, as I did with my Galaxy Nexus (It saves battery and I have a house phone for emergencies if somebody wants to contact me). I wake up the next morning around 9 hours later, I lose 1% battery which is normal, but when I use the phone for, say, 20 seconds, the battery instantly drains down to 95%. When I turn the screen off, and leave it until I get into work. I get into work 30 minutes later, turn the screen on and use it for a further 40-50 seconds, the battery then goes down to 92%, and the same thing goes throughout the day. I'm currently at 77% which only 12mins screen on time.
Would this be down to calibration? I haven't actually calibrated the battery and I rooted and flashed a custom ROM on the first day.
I had similar issue on my old, broken Nexus 4 so its not a coincidence.
Any help is appreciated.
-N
Click to expand...
Click to collapse
I just thought its normal, for the first couple cycles, and since I flash a rom quite often was hard to pinpoint any of my battery drain problems, eventually though I found that my battery drain issues, were from the CPU not switching back to the 384mhz slot properly, set my min cpu speed with voltage control and now my drain issues are fixed, and I dont have those haywire readings.

OverTheBelow said:
I wouldn't worry about it. It's common with new phones (and new ROMs mind you) for the battery life reading to be a bit weird. Ultimately you'll still get the same battery life as normal, it's just the reading that will take a little time to become accurate as it calibrates itself.
Try Batterycalibration:
https://play.google.com/store/apps/details?id=com.nema.batterycalibration
When I first got an extended battery for my old Xperia X10 I would often see the battery life *apparently* going up after going down, without actually charging.
Click to expand...
Click to collapse
Calibrating the battery with that app does nothing. The reason you see the battery graph go up without charging after usage is because the graph is more of an "estimate". If you are using it extremely heavily for a long period of time it will give an "estimate" of where it is and then when you stop using it, it will realize it is no longer under load and appear to "recharge".
Sent from my Nexus 4 using Tapatalk 2

maniAK- said:
weird im getting 2 days usage with average use im really happy with the phone and battery
Click to expand...
Click to collapse
Is your phone in airplane mode?
Sent from my Nexus 4 using xda premium

Locksmith81 said:
Is your phone in airplane mode?
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
haha nope only have it in 3G if ii used 2G and juicedefender i could probably get 2.5 days out of it then, all i did was 5 complete charges and discharges when i got the phone and only use wall charger not USB charge

How many hours do you end up getting out of it before it dies? And what settings do you get out of that?
I don't pay attention to my battery every few minutes, but look at what I get out of a whole day. Depending on usage, I get 2% to 8% drain per hour. On average, it's closer to 6%. Hope that helps.

The day I calibrated my battery (the second day after I bought the Nexus 4 last week):
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
haha, took another half an hour after that of the phone just idling with screen on full brightness till it finally shut off.

OverTheBelow said:
The day I calibrated my battery (the second day after I bought the Nexus 4 last week):
haha, took another half an hour after that of the phone just idling with screen on full brightness till it finally shut off.
Click to expand...
Click to collapse
How do you get it down to 1%? Mine always shuts off when it's about 3% and doesn't let me keep it on.

Just power it back on after shutdown. I get quite about more juice out of it.
BTW, noticed that it uses far less power over the weekend, when at home and constantly on WiFi. I have a feeling the signal amplifier is not very efficient.
Sent from my Nexus 4 using xda app-developers app

anyone has sudden battery fall problem?

This morning i woke up the battery was at 92
when i turn on wifi and browse for like
a minute the battery falls to 87
the phone was brand new stock rom and kernel
Sent from my Nexus 4 using xda app-developers app

I would say these things happen, atleast to me also. Best bet is to look at longer time intervals and average the battery usage. Install Better Battery Stats and it can help give you a general idea of what is causing battery drain.
I've had the phone go 10 hours in overnight and not budge from 100% and show a similar drop to what you''ve had on light use after.

sucre213 said:
This morning i woke up the battery was at 92
when i turn on wifi and browse for like
a minute the battery falls to 87
the phone was brand new stock rom and kernel
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I had this exact problem and RMA'd. It may be an issue of power cycling the battery so many times but I didn't want to take the chance. My new phone has a strong battery that lasts 5 hours on average.

avink said:
I would say these things happen, atleast to me also. Best bet is to look at longer time intervals and average the battery usage. Install Better Battery Stats and it can help give you a general idea of what is causing battery drain.
I've had the phone go 10 hours in overnight and not budge from 100% and show a similar drop to what you''ve had on light use after.
Click to expand...
Click to collapse
So do you want to replace it ? To be honest, the battery is the only issue i found about this phone . I mean for a phone that has 2100mAh battery and 28nm CPU, the battery performance is only a little bit better than my i9000, that's disappointing...

dralways said:
I had this exact problem and RMA'd. It may be an issue of power cycling the battery so many times but I didn't want to take the chance. My new phone has a strong battery that lasts 5 hours on average.
Click to expand...
Click to collapse
I was going to say these forums have the worst reasons to RMA. Then I saw the username and suspicion was confirmed.
Sent from my Nexus 4 using Tapatalk 2

sucre213 said:
This morning i woke up the battery was at 92
when i turn on wifi and browse for like
a minute the battery falls to 87
the phone was brand new stock rom and kernel
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Had the same issue b4 getting it bricked... sent for RMA !

joshnichols189 said:
I was going to say these forums have the worst reasons to RMA. Then I saw the username and suspicion was confirmed.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Lmfao what the hell is your problem, kid?
PUBLIC ANNOUNCEMNET, THIS CREEPY KID FOLLOWS MY POSTS ON XDA JUST TO POST BRAINLESS, SPINELESS REAPONSES TO MINE. PLEASE BEWARE!

sucre213 said:
This morning i woke up the battery was at 92
when i turn on wifi and browse for like
a minute the battery falls to 87
the phone was brand new stock rom and kernel
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
its the battery bug...hops in between... if this time is ur only problem....it may not come back again....
dont rma just for that... if it comes often then u can

dralways said:
Lmfao what the hell is your problem, kid?
PUBLIC ANNOUNCEMNET, THIS CREEPY KID FOLLOWS MY POSTS ON XDA JUST TO POST BRAINLESS, SPINELESS REAPONSES TO MINE. PLEASE BEWARE!
Click to expand...
Click to collapse
Lol you are some kind of self centered to think someone follows you around. You just happen to post useless information in almost every. Single. Q/A thread.
Sent from my Nexus 4 using Tapatalk 2

Off topic I know but if anyone knows of an option to block a member on this forum so that their posts become invisible, please PM me.
Edit: nevermind figured it out, had to use browser.

sucre213 said:
This morning i woke up the battery was at 92
when i turn on wifi and browse for like
a minute the battery falls to 87
the phone was brand new stock rom and kernel
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Its probably because you turned on wifi at that point, while you were browsing the phone is also checking for updates in the background

I've definitely had this problem.
I was getting really good battery life. I've had GSam battery monitor installed since opening and my average is showing at 21h 18m. Yet in the past 2 or 3 days the battery life has fallen off a cliff. I've had about 7.5hrs use so far today, with well under an hour of screen on time, and yet am at 30%.
The big change is battery drain in inactive states. I used to be able to leave it unplugged overnight and the GSam graph would basically be flat. I might lose 1 or 2 per cent. The other night I lost 40%.
The main differences in the GSam app usage section is that the Kernal (Android OS) is now sky high (13.2% for today). I'd hardly registered that as anywhere near a top used before. Chrome seems to be eating up background battery too now, whereas it never used to.
The only change in usage is that I bought a Maxell Qi charging pad, and have used it once or twice. I have to admit, I'm a little concerned. For now, I'm currently on stock everything.

I have same problem whit my Nexus 4.
I charged it today from 15% to Full and then unplugged it and gone to caffe bar whit my friend for a 3 hours and then went home.
That means my Nexus 4 was full time on sleep mode,but when i checked battery % its was on 97% thats pretty much for standby isnt it??
Mediaserver was on top whit 85% and Sleep mode was second whit 10%.
But i think i found solution for this battery drainage.
1.If you have battery drain issue turn off you Nexus 4.
2.Let it be off for an 1 or 2 hours.
3.Turn it on.
4.There should be no Mediaserver battery drain.
NOTE:If you turn you device off again for 1 or 2 hours problem will come back.
For now problem is somehow solved for me whit this Turning off for several hours.
Please report if there is success!!

Actually dropping tot 97% in 3 hours of standby does not sound like a problem. Also depends a lot on the signal quality during standby.
Dropping from 100% to 98-97% goes very quick on my phone. That's a matter of calibration of the battery meter. After that little drop it works like I expect it would.
Remember that the percentage is just an interpretation of battery voltage expressed in percentages. It's an estimation instead of an exact figure.

My nexus was dying after 3-4hrs of standby....with no use and data/WiFi off.
Also seemed like the phone took forever to charge. It got to a point that I turned it off to ensure I would be able to make 1 or 2 short calls during the day
It also stayed burning hot.
RMAd it and new phone has No issues.
Easily gets through day and night with very heavy use. I still haven't updated to 4.2.1.
Sent from my Nexus 4 using xda app-developers app

Okay so here is my screenshots.
One from early morning and after work.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sorry for Croatian i forgot to change to English in settings.

Karlo666 said:
Okay so here is my screenshots.
One from early morning and after work.
Sorry for Croatian i forgot to change to English in settings.
Click to expand...
Click to collapse
I'm confused. What's your issue? If I had 16 hours use with only an 8% drop in battery I would be ecstatic. I'd have about 75% use during that time ... on a good day. On a bad day, it would have died after 12 hours.

stenard said:
I'm confused. What's your issue? If I had 16 hours use with only an 8% drop in battery I would be ecstatic. I'd have about 75% use during that time ... on a good day. On a bad day, it would have died after 12 hours.
Click to expand...
Click to collapse
Dont you read?
I left phone home not useing it at all and its full time sleep mode

My battery is acting weird lately as well. It actually went up charged to 98% to charged in the span of one hour
what the heck?

Mine fell like that when I went out in the cold. 30% in one minute. Then I stayed on 3% for 45 minute till I found a charger. Hmmmmm
Sent from my Nexus 4 using Tapatalk 2

Just got Nexus, having battery problems, please help

Hello all,
I just got my Nexus 2 days ago, and I think that there is something weird about my battery.
First day, with little/moderate use the charge didnt last a day (thats ok, i guess).
But i put it to charge last night, and this morning a found it only at 37%, and when i looked at the battery page, I found this:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
As you can tell from the screenshot, it was charging for a bit, but then some time later, it stopped charging, and was decharging, while charger was plugged in! Why was that?
And also, as soon as i started using the phone again, that 37% was gone in ~1 hour.
Any ideas what is happening to my phone?
Is it my battery and I need to send the phone for a replacement? (Really dont want to, because I already waited for 2 months... but if it is defected than I will have no choise)
Thanks

phemark said:
Hello all,
I just got my Nexus 2 days ago, and I think that there is something weird about my battery.
First day, with little/moderate use the charge didnt last a day (thats ok, i guess).
But i put it to charge last night, and this morning a found it only at 37%, and when i looked at the battery page, I found this:
View attachment 1671960
As you can tell from the screenshot, it was charging for a bit, but then some time later, it stopped charging, and was decharging, while charger was plugged in! Why was that?
And also, as soon as i started using the phone again, that 37% was gone in ~1 hour.
Any ideas what is happening to my phone?
Is it my battery and I need to send the phone for a replacement? (Really dont want to, because I already waited for 2 months... but if it is defected than I will have no choise)
Thanks
Click to expand...
Click to collapse
Did you happen to lose power at all in the middle of the night?
Sent from my Nexus 4 using xda premium

nbeebe24 said:
Did you happen to lose power at all in the middle of the night?
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
No, because you can still see green charging bar at the bottom...

phemark said:
No, because you can still see green charging bar at the bottom...
Click to expand...
Click to collapse
I meant in your house.
Sent from my Nexus 4 using xda premium

nbeebe24 said:
I meant in your house.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
I think it wouldnt say it was charging, if there was no power in the house, would it?
And just to be clear, i had power when i woke up, so it would show 30mins of charging - but its still going down.
So there was definitely something wrong with the charging process....

Are you charging via USB (PC) or AC (wall)?

UZ7 said:
Are you charging via USB (PC) or AC (wall)?
Click to expand...
Click to collapse
It was AC (wall)
Also, when i got my phone, it was really cold, and i know that cold can be bad for battery. But could it cause permanent damage for it? thats the onyl reason i can think my battery isnt performing well... apart from defect

Once the battery is fully charged, a couple hours at most, it discharges and then won't start charging again till it drops below 90%. Could be the reason for your charging spikes. As far as battery life goes your is pretty typical. I constantly charge my phone, it sits on a wireless charger, but if I try and go all day with a single charge I can barely make it through the day and with heavy use that's more like half a day.

kzoodroid said:
Once the battery is fully charged, a couple hours at most, it discharges and then won't start charging again till it drops below 90%. Could be the reason for your charging spikes. As far as battery life goes your is pretty typical. I constantly charge my phone, it sits on a wireless charger, but if I try and go all day with a single charge I can barely make it through the day and with heavy use that's more like half a day.
Click to expand...
Click to collapse
I would be ok, if it stopped charging when it reached 100%, but i didnt even reach 50%....
Anyway, will test for a few days, and if it still gives me problems will probably need to contact Google..
P.S. my girlfriend got N4 as well, so will compare with hers, if i feel im getting very short battery life.

phemark said:
I would be ok, if it stopped charging when it reached 100%, but i didnt even reach 50%....
Anyway, will test for a few days, and if it still gives me problems will probably need to contact Google..
P.S. my girlfriend got N4 as well, so will compare with hers, if i feel im getting very short battery life.
Click to expand...
Click to collapse
Check to see what is actually using the battery in the stats. Could be a rouge app keeping the phone awake and draining the battery. GSam Battery Monitor gives the best stats but the stock one should give you a clue to what if anything could be draining it.

The same thing happened to my Nexus 4 when I initially got it. I left it to charge overnight and when I awoke it was far below 100%.
I flashed Franco kernel as soon as it was released though, and never got the problem again.

friend'scatdied said:
The same thing happened to my Nexus 4 when I initially got it. I left it to charge overnight and when I awoke it was far below 100%.
I flashed Franco kernel as soon as it was released though, and never got the problem again.
Click to expand...
Click to collapse
So this time my battery charged fine, but it didnt last long....
40min of usage drops battery by 30%, is that normal????..

phemark said:
So this time my battery charged fine, but it didnt last long....
40min of usage drops battery by 30%, is that normal????..
Click to expand...
Click to collapse
It'll get better. I'm on custom rom and kernel, and today, web browsing on wifi, I have used 21% in 1 hour and 15 minutes, and the phone has been unplugged just over 3 hours.
If the stock ROM doesn't improve significantly over the next few weeks i'd be surprised.

From 40% to 0% in 1 second
This just happened to my Nexus 4 (screenshot)
There was 40% left and all of a sudden the device turned itself off. After restart the battery was completely empty?!?

phemark said:
So this time my battery charged fine, but it didnt last long....
40min of usage drops battery by 30%, is that normal????..
Click to expand...
Click to collapse
You have a Nexus get your phone unlocked and install TWRP recovery (easiest method is Nexus 4 toolkit), download and install Harsh kernel, I guarantee you won't be disappointed with its performance or battery life

Hi
asasione said:
You have a Nexus get your phone unlocked and install TWRP recovery (easiest method is Nexus 4 toolkit), download and install Harsh kernel, I guarantee you won't be disappointed with its performance or battery life
Click to expand...
Click to collapse
With all due respect this isn't a kernel/ROM issue, otherwise every single person would be reporting of the battery suddenly depleting in the same way.
Installing another ROM isn't a fix for this sort of problem and just complicates things for the user.
To the OP:
We have two likely issues:
1) Faulty charger
2) Faulty phone.
First off try a different charger, if you don't have one, use your computer's USB port, although note that some computers do not charge while they are off, and the Nexus has a bug where it stops charging if the computer goes to sleep, even though it says it is still charging (it will start charging if you unplug and plug it back into the USB port while the computer is asleep).
Once your phone has charged to 100% from a different charger, if all is fine now it points to a faulty charger, if you still get the same issue, rule out any software you might have installed by doing a factory reset, and try again. If it still happens you simply have a faulty phone and will need to return it.
Regards
Phil

Any way to get super long standby time like New nexus 7?

I think our 2012 nexus 7 standby time is pretty bad..but i think it's the most case for many android devices. However, as we know the new nexus 7 2013 has smaller battery, but it's standby time is SIGNIFICANTLY longer. I heard over night, only about 2 percent drops, similar to iPhones iPads and even playbook when I had it. My 2012 nexus 7 drops 2 percent per hour, not per overnight.
What I'm wondering is that is this due to the snapdragon processor being more power efficient when idle? My nexus 4's standby time is incredible as well, but don't know if it's because of 4.3 update or not. I used to have Galaxy S2, which had a snapdragon S3 (the one before krait), and standby time on that was also horrible. Never got though a day, battery was always out at 3pm..
I do have some apps on my nexus 7, but I don't have too many either. I' not really an "app" guy. I have also tried Greenify, but it's pointless because I DO want to get some notifications from Email, Weather, etc. I don't have everything syncing that often.
I believe 2 percent per hour isn't really bad, and I don't think there is something wrong with my tab. But I really would love super long standby like the new nexus 7 2013. Will certain ROM in the developer section help? I believe I have Vanir 4.3 or something installed, and haven't changed for a while.
Also the nexus 7 2013 and nexus 4 with 4.3's super long standby is with WiFi ON. I'm wondering if they are due to SD s4 pro chip being well optimized with android 4.3 for battery efficiency or something.
Please reply!
Thanks.

Download an app named BetterBatteryStats. Start it and let it run for a whole battery cycle (charge it, unplug and then do what you usually do with your Nexus). Then you gotta check your Kernel WakeLocks (they are eating your battery when your screen is off). When you find out which ones are the problem you should post it here, on the forum and hopefully somebody will help you .
Basically saying: when you enter Android settings and here you check your batterry stats you want to have your awake bar fully covered by screen on bar (like this: http://img706.imageshack.us/img706/8633/131d.png).
Also disable 3g and wifi over night or find an app that will do it for you.
Here's a handy guide to improving battery life:
http://forum.xda-developers.com/showthread.php?t=1909996

Yeah....you have something draining your battery. I get like 2 percent drop over night on the original N7.
Read the like in my signature. Its in an S2 forum....but pretty much is the same for any device.
I can get 4 days on standby....barely touching it of course. 2 solid days on average with normal use.
______________________________
Sent from my cellular telephone. Battery problems? >>>> http://forum.xda-developers.com/showthread.php?t=2461864

Hmm..I am charging my tab right now. I'll try the methods suggested, and update.

{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Above are the screenshots. I'm using gsam. Better battery stats app is a paid app, so I chose this.
Do you think, from the screen shot above, that Google services is draining my battery? I'm not sure if this is only from me unplugged this tab for about an hour, or for the entire 2 days me plugging and unplugging time to time.
Thanks in advance for your help.

Also to Sheo above, awake and screen on are definitely different . Does that mean my battery is draining?
Thanks. And I guess it wasn't 2 days. 1 day and 5 hours I guess, instead of 2 days I said in my previous post.

Every time you unplug your phone, gsam resets. So those stats will be off. Charge it fully, and let it go til its near dead. Like 10 percent. Then check out gsam. Cpuspy would be a good thing to get to....to see if its deep sleeping and for how long. Just reboot when fully charged, or after unplugging go into cpuspy and reset stats. So it will track your full drain.
Hit the drop down on the app screen in gsam. Check kernel wakelocks....times waking device and time held awake. I am not sure its Google. It only held your phone awake for 2 minutes.
______________________________
Sent from my cellular telephone. Battery problems? >>>> http://forum.xda-developers.com/showthread.php?t=2461864

kj2112 said:
Every time you unplug your phone, gsam resets. So those stats will be off. Charge it fully, and let it go til its near dead. Like 10 percent. Then check out gsam. Cpuspy would be a good thing to get to....to see if its deep sleeping and for how long. Just reboot when fully charged, or after unplugging go into cpuspy and reset stats. So it will track your full drain.
Hit the drop down on the app screen in gsam. Check kernel wakelocks....times waking device and time held awake. I am not sure its Google. It only held your phone awake for 2 minutes.
______________________________
Sent from my cellular telephone. Battery problems? >>>> http://forum.xda-developers.com/showthread.php?t=2461864
Click to expand...
Click to collapse
Okay it's been several hours now after I unplugged and left it idle. I'm not really sure about the gsam results, so here are the screenshots.
Thanks for helping me.

Btw these 3 screenshots are from the kernel wake lock.
Thanks.

kj2112 said:
Yeah....you have something draining your battery. I get like 2 percent drop over night on the original N7.
Read the like in my signature. Its in an S2 forum....but pretty much is the same for any device.
I can get 4 days on standby....barely touching it of course. 2 solid days on average with normal use.
______________________________
Sent from my cellular telephone. Battery problems? >>>> http://forum.xda-developers.com/showthread.php?t=2461864
Click to expand...
Click to collapse
Me too, sometimes overnight draining is 0%.

sw6lee said:
Above are the screenshots. I'm using gsam. Better battery stats app is a paid app, so I chose this.
Do you think, from the screen shot above, that Google services is draining my battery? I'm not sure if this is only from me unplugged this tab for about an hour, or for the entire 2 days me plugging and unplugging time to time.
Thanks in advance for your help.
Click to expand...
Click to collapse
You can get better battery stats free here on xda, just in case you want to give it a try.
http://forum.xda-developers.com/showthread.php?t=1179809
Sent from my Nexus 7 using xda app-developers app

Hey guys I have no idea what happened to my tablet, but since yesterday, my tablet standby time is really good. Today, I unplugged 4 hours before, and right more, it still says 100% . Does gsam also save battery? When I had my honeycomb tablet back in the day, it was dropping only 2 percent per overnight and I haven't seen this on any of my other tabs after. But it's amazing to have this long standby time again. I was thinking short standby time was just one of the things that android was not good with. Now I'm happy thanks guys for your help!

official LG battery drain/degradation

I've had one battery since I bought my phone in August 2015
Over the past few weeks I began noticing much less standby and screen on time as before.....
I looked for any rogue apps that could be causing the drain...
I contemplated whether it was the new v20e and f updates..
I then got two official LG batteries from am Amazon seller for $15 (out it curiosity really)
Any now my battery drain is GONE.
I didn't realize I could have battery degradation so soon.... I've used the official charger for 8 months and a certified Qualcomm quick charger for the last 2 months
Not sure... But possible that I crossed 400 charge cycles on my original battery... As I use it as my primary smartphone and primary camera (mirrorless got relegated to the box)
Maybe the marshmallow battery drain is really decreased battery capacity?
Anyone else experience anything similar?
This also makes me wonder if phones like the Nexus 6p really have a shorter service life than I thought.
I hope LG keeps trying with what is now their exclusive feature of removable batteries. Not too impressed with the friend modules so far.... But I think I'll be buying the lg360 cam asap once it's compatible with my g4.

Same here!
Got the phone on May 2015. Battery life started to get worse with first MM update.
I used to get about 4-5 hours of screen-on time, now I get about 2-3 max.
Sometimes I need to recharge in the middle of the day(never happened before, even with moderately heavy use).
I'll get a new battery as well and post results, thanks for bringing up the issue OP

+1
Envoyé de mon LG-H815 en utilisant Tapatalk

tsimpoyris said:
Same here!
Got the phone on May 2015. Battery life started to get worse with first MM update.
I used to get about 4-5 hours of screen-on time, now I get about 2-3 max.
Sometimes I need to recharge in the middle of the day(never happened before, even with moderately heavy use).
I'll get a new battery as well and post results, thanks for bringing up the issue OP
Click to expand...
Click to collapse
Same situation here. Flashed 5.1, but still have max 3h SOT.

One first charge cycle with new LG battery
Will report back tomorrow maybe
Obvious difference already

GPS seems the issue for me
Battery life was good on lollipop. After the marshmallow update, started having significant drain. Did a factory reset, was slightly better. After analyzing for a bit, noticed massive GPS use, mostly in play services. Turned off location, and now use it only as needed. Giant increase in battery life.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

I have no real battery issues with MM v20d, still on the original battery from June 2015.
Had the bootloop so MB replaced 506-->601.
After flashing v20f I started to experience battery drain (Android-system), it was caused by my Fitbit charge hr bluetooth connection.
Turning off bluetooth and only turning it on when I want to sync my Fitbit stopped the Android-system wakelocks.

novastar1 said:
One first charge cycle with new LG battery
Will report back tomorrow maybe
Obvious difference already
Click to expand...
Click to collapse
Results? [emoji2] I have just received my new LG battery and almost done with the first charging cycle. I will report after few days.

dedovec said:
Results? [emoji2] I have just received my new LG battery and almost done with the first charging cycle. I will report after few days.
Click to expand...
Click to collapse
Yes
Back to 1% drain on wifi overnight
And 4 hrs sot
I could see the battery percentage drop every few minutes of screen on with the original battery
So more that worth the $16 I paid for 2 new batteries
I really wasn't expecting to see a difference as my initial battery is now 10 months old

novastar1 said:
Not sure... But possible that I crossed 400 charge cycles on my original battery... As I use it as my primary smartphone and primary camera (mirrorless got relegated to the box)
Click to expand...
Click to collapse
Depends at which point you recharge.
ideally up to 90, back on at 40. Trying not to go below. With my 3+ yr old tab tab i've mostly followed that regime now and still can get almost 8h sot. 1500 cycles possible.
if you charge to 100 and then again at 5 & 10. Those are deep discharges which will decrease battery life sooner so around 300-500 cycles you see less battery life. (see table 2)
hey, it just might not be possible to do the former and this is why replaceable batteries are best.
This also makes me wonder if phones like the Nexus 6p really have a shorter service life than I thought.
Click to expand...
Click to collapse
There is a catch here, the 6P isn't the easiest of devices to service. it gets a ifixit score of 2 (!). So a battery replacement is going to be involved and cost appropriately.
I hope LG keeps trying with what is now their exclusive feature of removable batteries.
Click to expand...
Click to collapse
Definitely and the problem gets exacerbated with quick charge. Quick charge isn't good for batteries but everybody loves it.
QC 2 tries to get as much charge as it can up to a certain point then tapers off. Its more stressful than QC3 which tries to get as much as the phone will allow.Subtle difference.
It's possible with quick, fast, turbo whatever charge that people will require to change batteries sooner than in the past.

Just update to MM yesterday. My phone is just 2 days old so I have nothing weird to report about battery. Last night, I left my phone at 40%, after 5 hours of sleep, my batt is at 39%. So I guess this is a pretty good one. I also play games for 20 minutes and got 5% drain only.

Usually the battery drain after updating to mm is caused by fast dormancy.
U have to disable it.
Go to the hidden menu, type *#546368#*815# (replace 815 with ur model number, so 812 if u have the 812 model etc)
Then go to field test>Modem settings>PDP setting>0 and sellect fast dormancy off.
Reboot phone and you should be fine
This worked for me, try before u buy a new battery

Definitely we talking about battery degradation. Same usage, same condition, disabled MLT, Fast dormancy, etc etc etc... I am not new in Android world and LG phones. This is the result after first charging of my new battery. That was impossible with the old one. Result was 3h SOT and only 15% to 20% battery left on LP with the old battery. Now i have 3h 40 min SOT and 44% battery left. Usually i have 25 to 30 min SOT from 100% to 90%. Today from 100% to 90%= 1h 12 min SOT. If this is not improvement and proof for battery degradation...
PS: This is close or equal to my initial result, when the phone was new.

Could you send me a link to that battery that you have ordered?
Sent from my LG-H815 using Tapatalk

This is original LG battery, which i bought from the store of the official LG importer in my country and unfortunately i can't provide you a link. I presume that on Ebay you can find original battery and may be cheaper than mine (25€).

G4 dual models are better than others i think , i usually get 4:30 hours SOT with wifi on and sync and one day standby on my H818N dual sim model.

This is the final result with the new battery after one charging cycle. Considering my usage and my results with the old battery, i am absolutely glad from my purchase.

dedovec said:
This is the final result with the new battery after one charging cycle. Considering my usage and my results with the old battery, i am absolutely glad from my purchase.
Click to expand...
Click to collapse
Same here.
But do you happen to use a quick charger?
I used a quick charger for only 2 out of the 10 months that I had mine.... I'd like to think the quick degradation isn't due to that

imarcel99 said:
Could you send me a link to that battery that you have ordered?
Sent from my LG-H815 using Tapatalk
Click to expand...
Click to collapse
I got mine from "gadgets and supplies" on Amazon

novastar1 said:
Same here.
But do you happen to use a quick charger?
I used a quick charger for only 2 out of the 10 months that I had mine.... I'd like to think the quick degradation isn't due to that
Click to expand...
Click to collapse
I didn't use a quick charger even a single time, only charger from the box of the phone.
Overall... My device have two super weak spots: bootloop problem from the last week, and battery that lasts only 10 months...
Oh, and image retention/ burn in/ bla bla display...
D*mn, my experience with this phone it's not so good... [emoji1] [emoji1] [emoji1]