yashsingh1/xdaforums huggingface dataset:
[Nexus 7 (2013) General] Richieboy67:
HD widgets can be a big drainer especially if auto syncing. I had the same issues until removing it.

Go into settings/apps and look at the running apps.
[Nexus 7 (2013) General] Philaphlous:
I've got mine overclocked to 1.7ghz, I got 6 hours last night and still had 40% battery left. Used it for browsing other forums, this forum, looking for backgrounds, and some YouTube. So overall not bad, I make sure to close apps when I don't need them tho, that seems to help
[Nexus 7 (2013) General] S8B:
Mine has been on for 8 days & 13 hours with about 1:15 minutes of screen time. It's currently at 14% battery. Yes, I know... I've hardly used it thus far. :-/
[Nexus 7 (2013) General] zim2dive:
After 22 hours of standby, I'm still at 93%. This is with the Wifi set off when screen is off.

The haters will say "you didn't use it... anything can last if you don't use it'... but please check the topic.. the topic of this thread is standby power consumption... and from what I see, it's pretty darned good.
[Nexus 7 (2013) General] nsx82:
Everything switched off (location acces, sync, wifi, bluetooth etc), only idle: average 4,6% / 24h
[Nexus 7 (2013) General] Matrix_19:
True

I had not installed HD Widget on my N7 yet... I did it 2 days ago.

And now I have more battery drain when the tab is on standby
[Nexus 7 (2013) General] Deathman20:
Most widgets have some sort of drain in some capacity at least. I do relatively well and yesterday was on the very with everything turned on stock kernel doing around 20% per day with 1 hour screen usage. Still not bad IMO waaay better than my Tegra 3 tablet what was chewing 15-20% per night and that was custom kernal with UV and UC.
[Nexus 7 (2013) General] BTT8:
Airplane mode that ho
[Nexus 7 (2013) General] n00n31t:
about 1% per two hour, lot more if currents is in recent items
[Nexus 7 (2013) General] :
After turning almost everything off, I started getting good battery life - 11% used over 35 hours, 3 of those being screen time.

Get home today, another 13% gone in only 8 hours. Culprits seemed to be Wi-Fi (even though I have it set to never on when on standby) and nlpcollector. Strange. Only thing I had on that I could see would do that was using Wi-Fi to determine location.

I just don't get how inconsistent Android is with its battery usage and how something like play services (which is tied to location services and I'm guessing nlpcollector belongs to) can just go and wantonly use battery like that. I don't like to say it, but I've noticed with all the iDevices I've experienced, if it's on standby, battery usage is consistent every time. This is the sort of performance would expect, not something that uses x amount in one day, including use, and then uses that same amount again just on standby.It's so inconsistent.
[Nexus 7 (2013) General] SubMatrix:
11% battery used with 3 hours of screentime and 32 hours of idling? You serious? If you can repeat that, please screenshot it.
[Nexus 7 (2013) General] :
If I can, sure. Here's where I am and what I meant. All the screen on time has basically been reading with the kindle app. All other time has been idle. It was going great guns then, for no reason I could see, took a turn for the worse. No apps running. The latest massive dip has just been reading, so I would have expected like performance from earlier, instead it's plummeting as if I'm watching Netflix. Just... Weirdly inconsistent.

Edit: no charging at all. Some weird spikes in reporting of battery status, but lots of people seem to be getting this.

Edit 2: the 32 hours was about the time the slope started to take the 45-odd degree dive... for no reason... while still idling....
[Nexus 7 (2013) General] freeza:
Standby time is terrible for me. Are all of you guys rooted?

I've heard there are issues with SuperSU taking up 100% cpu

That would explain a lot, considering in 4 hours my tablet is down to 66% battery life ON standby. Terrible.
[Nexus 7 (2013) General] demandarin:
If your device is rooted, the app greenify does wonders on eliminating battery draining culprits running in background. Its worth checking out. Shows a lot of apps running that other apps won't show. I have it on all my Devi ces now. Just a f.y.I. ;)
[Nexus 7 (2013) General] andrewf403:
Judging from this screenshot you have the same problem, I have with Nexus 4 on Android 4.3 http://xdaforums.com/showthread.php?t=2392155

No solution found yet, but I hope to find common denominator in affected configurations to find out what causes this
[Nexus 7 (2013) General] :
This is interesting. I'll have to keep a closer eye on better battery stats and usage, but this could explain why my battery life went from outstanding to abysmal in a day and a half.

There seems to be a lot out there on devices having the same issue with stock 4.3, so hopefully google is taking note.
[Nexus 7 (2013) General] sluflyer06:
With WiFi off I was still at 100% after leaving it overnight 7ish hours.
[Nexus 7 (2013) General] jeffrey1027:
I think i lose about 2-3% in about 10 hours with all apps closed in the multitask window thingy. I do however have avast on.
[Nexus 7 (2013) General] froggydoddy:
Interesting comments.

Are people that are getting great stand-by battery life all rooted? I am rooted. I`m wondering if that`s the problem. Main issues seems to revolve around Android OS & Android system (kernel) sucking battery life. Visiting a relative out of town and her Asus Memo Pad is getting GREAT stand-by time, just like my Original Galaxy Tab 10.1 is. Something like 2% overnight!

Then, as stated, my 2 NEW Nexus 7 with different configurations drop aprox 2% per hour on stand-by. Booth rooted with latest SuperSU and with TWRP recovery installed. Greenify dosen`t help as main issues are with Android system.

I`ll get rid of HD Widgets and see if that helps.
[Nexus 7 (2013) General] SubMatrix:
I am rooted and unlocked, I dropped 1% overnight, wifi off. I don't think root itself affects how the OS or kernel operates whatsoever.
[Nexus 7 (2013) General] BTT8:
Here's my standby time.
[Nexus 7 (2013) General] froggydoddy:
Well, decided to bite the bullet and wipe Dalvik, wipe cache, and wipe the device.

Rebooted, entered my google info, changed the setting so that wifi is off during sleep while unpluged. That`s all!

After, I went from 100% battery life to 81% left in 12 hours! What is going on? Can`t blame apps or crazy widgets.

Next step is to flash FACTORY image now that they are available but I highly doubt that that will change anything. Looks like someone ele already tried that and got the same reults.

Let`s not forget that I have 2 (2013) 32GB Nexus 7`s behaving this way. This bites!
[Nexus 7 (2013) General] zim2dive:
I am rooted. Great standby (IMO).
[Nexus 7 (2013) General] Erievon:
This. I did it on my playbook every day for two years, became habit. When I got the N7 I just naturally did the same. Knowing I'm done with it for at least a few hours it's like a shutdown ritual. Pull down quick settings, hit the plane, then the power button. Thus far been happy with standby drain, next to nothing.
[Nexus 7 (2013) General] froggydoddy:
I put the tablet in airplane mode last night. That didn`t help. Big battery drain on stand-by persists.
[Nexus 7 (2013) General] NYCHitman1:
0% drain over 7.5 hr period overnight. DJL's CM10.2 kang ftw! :good:
[Nexus 7 (2013) General] froggydoddy:
haha! Can you send me a direct link to where you got that ROM from and save me for searching for it? I`ll probably give that a try as part of my troubleshooting
[Nexus 7 (2013) General] NYCHitman1:
A little searching never killed anybody :p

http://xdaforums.com/showthread.php?t=2391779
[Nexus 7 (2013) General] Matrix_19:
Full stock

Wifi on

GPS off

I'm losing 1% / 3 or 4 hours stand by
[Nexus 7 (2013) General] cas_xp:
Full Stock

ONLY 1d9h!

Android OS 79%

Screen less than 5%

Something must be wrong. I used logcat and it keeps printing these(never stop!!):

I/rmt_storage( 185): rmt_storage_disconnect_cb: clnt_h=0x0x4c1e conn_h=0x0xb8ddb0b0

I/rmt_storage( 185): rmt_storage_disconnect_cb: clnt_h=0x0x4c1f conn_h=0x0xb8ddb480

I/rmt_storage( 185): rmt_storage_disconnect_cb: clnt_h=0x0x4c20 conn_h=0x0xb8ddb4d8

I/rmt_storage( 185): rmt_storage_connect_cb: clnt_h=0x4c21 conn_h=0xb8ddb480

I/rmt_storage( 185): rmt_storage_open_cb: /boot/modem_fs1: clnt_h=0x4c21: req_h=0xb1a1 msg_id=1: Client found

I/rmt_storage( 185): rmt_storage_open_cb: /boot/modem_fs1: clnt_h=0x4c21: req_h=0xb1a1 msg_id=1: Send response: res=0 err=0

I/rmt_storage( 185): rmt_storage_connect_cb: clnt_h=0x4c22 conn_h=0xb8ddb4d8

I/rmt_storage( 185): rmt_storage_open_cb: /boot/modem_fs2: clnt_h=0x4c22: req_h=0xb1a2 msg_id=1: Client found

I/rmt_storage( 185): rmt_storage_open_cb: /boot/modem_fs2: clnt_h=0x4c22: req_h=0xb1a2 msg_id=1: Send response: res=0 err=0

I/rmt_storage( 185): rmt_storage_connect_cb: clnt_h=0x4c23 conn_h=0xb8ddb530

I/rmt_storage( 185): rmt_storage_open_cb: /boot/modem_fsg: clnt_h=0x4c23: req_h=0xb1a3 msg_id=1: Client found

I/rmt_storage( 185): rmt_storage_open_cb: /boot/modem_fsg: clnt_h=0x4c23: req_h=0xb1a3 msg_id=1: Send response: res=0 err=0

I/rmt_storage( 185): rmt_storage_alloc_buff_cb: /boot/modem_fs1: clnt_h=0x4c21: req_h=0xb1a4 msg_id=4: Alloc request received: Size: 262144

I/rmt_storage( 185): rmt_storage_alloc_buff_cb: /boot/modem_fs1: clnt_h=0x4c21: req_h=0xb1a4 msg_id=4: Send response: res=0 err=0

I/rmt_storage( 185): rmt_storage_rw_iovec_cb: /boot/modem_fs1: clnt_h=0x4c21: req_h=0xb1a5 msg_id=3: R/W request received

I/rmt_storage( 185): wakelock acquired: 1, error no: 110

I/rmt_storage( 185): rmt_storage_client_thread: /boot/modem_fs1: clnt_h=0x4c21 Unblock worker thread (th_id: -1193430544)

I/rmt_storage( 185): rmt_storage_client_thread: /boot/modem_fs1: clnt_h=0x4c21: req_h=0xb1a5 msg_id=3: Bytes read = 512

I/rmt_storage( 185): rmt_storage_client_thread: /boot/modem_fs1: clnt_h=0x4c21: req_h=0xb1a5 msg_id=3: Bytes read = 512

I/rmt_storage( 185): rmt_storage_client_thread: /boot/modem_fs1: clnt_h=0x4c21: req_h=0xb1a5 msg_id=3: Send response: res=0 err=0

I/rmt_storage( 185): rmt_storage_client_thread: /boot/modem_fs1: clnt_h=0x4c21 About to block rmt_storage client thread (th_id: -1193430544) wakelock released: 1, error no: 0

What the hell is this rmt_storage?
[Nexus 7 (2013) General] froggydoddy:
Yeah, the problem seems to be Android OS and Android system for me too.

I was on vacation and going back home today. I'll probably try throwing some customs ROM's to see if it makes a difference. I really would rather not have to do that though.

Thinking about sending the tablets away under warranty but it likely isn't hardware related. I really don't get it!
[Nexus 7 (2013) General] cas_xp:
Mine is hardware defect. I tried different ROM and all displays this error message. And my GPS is not working at all. I guess it is all related.

The bad thing is I bought this N7 from USA and it is hard for me to return it.

RMA?!
[Nexus 7 (2013) General] MattDN93:
After using the device with a screen on time of 9h18m it went from 100% to 14% in just under 24h. Is that cause for concern? I know the screen on time is quite high though, only had the device for 2 days though so not sure if it's playing up or I'm just overusing it :P Question also, I have to use my HTC One S charger for it (1A 5V vs the Asus brick 1.25A 5.2V) because I imported from the US and don't have a converter, will the different current and voltage affect charging the device? Thanks.
[Nexus 7 (2013) General] rmm200:
The Asus stock charger takes 100 to 240 volts input, no converter required. Where do you live that is outside that range? It also provide 1.35 amps at 5.2 volts. Any cell phone charger with a micro usb connector will work, although it may be throttled to 500ma.
[Nexus 7 (2013) General] blahblahyoutoo:
what kernel/rom?
[Nexus 7 (2013) General] :
Just tried a logcat reader, but I guess you need to be rooted to see this logs. Would have been useful to see if I could spot what was going on here. In this instance, GPS is off, all apps unsynced, Wi-Fi only on when in use. Tablet was only used for an hour and a half to watch Netflix right at the beginning. Went from 100% to 88% with Netflix, then to 87% while on standby overnight (6 hours), then I get home to it having used 12% (down to 75%) while on standby during the day (11 hours). If anything, I should have expected to come home to it at 84% or so. This looks to be a system (not app) wakelock issue.
[Nexus 7 (2013) General] Ravynmagi:
For some reason Google+ is killing the battery on my Nexus 7. I have Google+ on my Nexus 4 and it doesn't drain the battery at all (I don't use it that much). Not sure why in 14 hours of idle time Google+ has 5 hours of wake time. What is Google+ doing differently on my Nexus 7 (from the screen shots it doesn't appear anyone else in this thread has Google+ going nuts) than it is on my Nexus 4 (no keep awake time there)?
[Nexus 7 (2013) General] froggydoddy:
Big Update!

Whoa! Big update!!

I installed CM 10.2 last night. Left my tablet unplugged overnight. This morning: After 9hrs on battery, my battery went from 100% and stayed on 100%!! Wow! Now we're cooking. That's with Airplane mode off as well.

Few notes:

1) Installing Cyanogenmod unrooted me. Re-rooting right now and re-checking battery life.

2) I've noticed that I get an update for the stock ROM every 3-4 days. It's always 51MB. I always installs it, but now I'm thinking it's the same update that never really installs properly. Maybe that's my problem on stock?? Investigation continues. I'd rather use stock than CM
[Nexus 7 (2013) General] MattDN93:
Sorry I meant to say converter in terms of the actual plug end on the charger, the US square pins don't fit in South Africa, but we use 220V. The 500mA throttling sounds about right looking at the way it charges...

---------- Post added at 09:51 PM ---------- Previous post was at 09:50 PM ----------

Sorry I meant to say converter in terms of the actual plug end on the charger, the US square pins don't fit in South Africa, but we use 220V. The 500mA throttling sounds about right looking at the way it charges...
[Nexus 7 (2013) General] blahb:
I'm pretty happy with mine, getting 1% with moderate usage...
[Nexus 7 (2013) General] viralbug:
I'm sure you can find a small adapter at any local electrical hardware store for plugging the square pins to round pins (or whatever else is used in your region).
[Nexus 7 (2013) General] Semantics:
Mine sleeps like a champ, 9 hours on standby off a fresh charge and I'm at 98%.
[Nexus 7 (2013) General] SubMatrix:
This is my 2nd or 3rd charge cycle:

- stock rooted unlocked bootloader

- WiFi set to off when idle

- did not let Google sync apps from my account on setup

- 90% of screentime is reading in Google Play Books, the other 10% is misc browsing and video watching in MX Player

Overall I'm very pleased with the balance of standby and screentime :)
[Nexus 7 (2013) General] cybermage1:
Interesting. I installed CM 10.2 and it hasn't helped. Like the previous poster I'm seeing constant log spew related to rmt_storage and modem_fs1 or modem_fs2.

Do you see that when you do adb logcat?

I've tried the last two official firmware versions and CM 10.2 and can't seem to stop the battery drain problem. It just never goes to deep sleep.
[Nexus 7 (2013) General] froggydoddy:
Ok, I haven't posted here in a while here's an update:

Ever since going to CM 10.2, I've had approx 1% battery drain every 2-3 hours on stand-by. I can live with that.

On my second (2013) Nexus 7, I was never able to update the OS. The installs kept failing. So I manually updated to JSS15J. Stand-by was still terrible. Then I was stuck on JSS15J. I had to again manually update to JSS15Q. I'm happy to report that on Stock, rooted JSS15Q, I'm getting a battery drain of approx 1% per 3-4 hours at this point.

Although far from perfect, these results are acceptable. Especially when compared to what I was getting originally.
[Nexus 7 (2013) General] kura808:
0.2%/hour. 18hr44min standby so far (100% down to 96% currently).

Stock. Not rooted. No BL unlock.
[Nexus 7 (2013) General] Richieboy67:
Mine did very well in stand by. Check your WiFi settings. I believe it is set to scan for networks by default. In addition, I keep mine st at a single frequency instead of auto.

This thing really kicks ass in stand by. If yours is not than something is running.
[Nexus 7 (2013) General] razball:
I have my WiFi to shut off when the tablet is sleeping and I had it off the charger last night for 8 hours and it didn't drop 1%
[Nexus 7 (2013) General] cobyman7035:
does anyone use a magnetic on/off case that drains your standby battery fast? im still trying to figure out why my n7 doesn't go into deep sleep, its puzzling me!

im trying to figure out if its the case making it NOt SLEEP!

my kernel wakelock is suspend_backoff, its driving me nuts! cant figure it out, googling it for hours

i don't have chrome installed , ive disable uninstalled all of those screen wake on/tapp off apps

usually if u don't use the tablet for 4 hours it wont even drop 1 %, mine seems tod rop 1% per hour doing nothing
[Nexus 7 (2013) General] tcournoy:
This is on stock JSS15Q with Jassy kernel, auto brightness and push notification sync. Used for reading and some gaming during the 4 hours of on screen time.

BTW, I have no idea what the spike up to 100% was. I specifically didn't charge or connect my N7 so I could check the battery life.

View attachment 2237924View attachment 2237925
[Nexus 7 (2013) General] tcournoy:
The other screenshots didn't attach right
[Nexus 7 (2013) General] froggydoddy:
Final Update:

I'm back to rooted stock JSS15Q on both tablets. Both Tablets have adequate stand-by times. I lose about 3-7% PER DAY (24hrs) while on Stand-by.

Thank you all for your comments and suggestions.

Case closed :)
[Nexus 7 (2013) General] bajasur:
I am getting absolutely horrid battery life for some reason.. Running PA with elementalX kernel. I may have to go back to stock kernel and clean rom
[Nexus 7 (2013) General] Tony_YYZ:
I think I figured out what causes the battery spikes in the graph. I was monitoring my N7 today and trying to discharge it and noticed it dropped from 17% to 14% in the blink of an eye. I checked the battery graph and there was a spike the correspond with that sudden drain. It did it again from 6% to 4% then the tablet powered itself off after sitting at 4% for a few minutes.
[Nexus 7 (2013) General] FlamingAngel82:
Well impressed with the battery life so far! :)

Very impressed with my Nexus so far. No issues out of the box!

Sent from my Nexus 7
[Nexus 7 (2013) General] cobyman7035:
Can anyone. Do 10hrs standby with 0 % loss? I think I can do 7hrs

Via Google voice Δ |\|€×u$™ 7 FHD on Tapatalk²
[Nexus 7 (2013) General] venomo36:
Hey everyone,

My Nexus 7 (2013) is having the same problem with battery graph. There are about 2-3 spikes to 100% in every discharge cycle.

I noticed this problem has been reported in different cycles, but no one seems to be able to give a definite answer of what the source of this problem is.

BTW, after a reset to factory settings, the problem still persists.

ANY idea why this is happening???
[Nexus 7 (2013) General] alex050673:
So, 14 to 30+ days pure stand-by time? Is this really true for the Nexus 7 (2013)? Screenshots? (I'm considering buying one or two for Christmas, and stand-by time is a very important parameter for me.)
[Nexus 7 (2013) General] Richieboy67:
It matters what you have running on the background. Mine does well with battery but I've never been able to test standby time for more than a day or two due to constant use.

I use mine for watching videos, sometimes hours and I usually charge over night and most of the time battery is still above 20%. I keep my screen brightness low or on auto and have barely anything running in the background.
[Shield General] rushless:
Does anybody have MAMEreloaded 139 installed? If so, could you please test out Dead or Alive +? That game plays slow on Tegra 3, A6X, Snap 600 and every other chipset tested. Even with speed hacks activated. Basic laptops did not start playing that game smooth with MAME until about three years ago. 3D games with no gpu assist use the cpu for the work.

The roms needed to test are doapp.zip (the game) and tcs.zip (the bios). If this plays smooth, that would mean Soul Calibur has a shot too. I doubt it will play smooth, since extra cpu power means more heat and battery power. Perhaps we are at diminished returns until 20 nM chipsets are released to offset the heat issues for more cpu power for apps. Point being, the Snap 600 cpu benchmarks are double that of the Snap Pro dual, but the speed increase for Dead or Alive was about 10% at best (still far too slow).
[Shield General] sontin:
You know: If you want people to help you then write more.

So, what is MAMEreloaded 139? A DreamCast emulator?!
[Shield General] rushless:
I would have thought anybody that is a "true" gamer (typical Shield buyer) would know what it is ;)

It is an arcade emulator that is free in then Play market. Android version of MAME.
[Shield General] mylios101:
I tried it with MAMEreloaded and a Dead or Alive ROM, but it looks like the emulator only uses one core, so it's wicked slow. More of a software issue than the Shield not having enough power.
[Android Q&A, Help & Troubleshooting] yajnab:
I am trying to build Cyanogenmod 10.2 and got stuck here

frameworks/av/services/audioflinger/Effects.cpp:1268:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
target thumb C++: libaudioflinger <= frameworks/av/services/audioflinger/StateQueue.cpp
frameworks/av/services/audioflinger/AudioPolicyService.cpp:1580:5: sorry, unimplemented: non-trivial designated initializers not supported
frameworks/av/services/audioflinger/AudioPolicyService.cpp:1580:5: sorry, unimplemented: non-trivial designated initializers not supported
frameworks/av/services/audioflinger/AudioPolicyService.cpp:1580:5: sorry, unimplemented: non-trivial designated initializers not supported
frameworks/av/services/audioflinger/AudioPolicyService.cpp:1580:5: warning: missing initializer for member 'audio_policy_service_ops::open_input_on_module' [-Wmissing-field-initializers]
make: *** [/home/yajnavalkya/rom/android/out/target/product/beni/obj/SHARED_LIBRARIES/libaudioflinger_intermediates/AudioPolicyService.o] Error 1

I will be very glad if anyone helps me
[Android Q&A, Help & Troubleshooting] yajnab:
FM Radio Is disabled to fix this issue
[EVO 4G Q&A, Help & Troubleshooting] madshark2009:
My HTC EVO 4G phone power button broke and now I cant turn screen on so I was looking for volume wake up mod and cant find , I need help finding it , Plus I cant flash via recovery because the power button dont work so how can I install (volume wake up mod) without it ??

PS : I am on expired warranty :D
[EVO 4G Q&A, Help & Troubleshooting] Captain_Throwback:
Both smelkus & TWRP recoveries allow use of the touch screen and/or capacitive buttons, so that isn't an issue. The mod you're looking for really depends on what ROM you're running.
[EVO 4G Q&A, Help & Troubleshooting] madshark2009:
hmm thanks so can you give me a guide on how to flash twrp recovery ?

and my rom version is the following Nitros some thing ... (gingerbread)
[EVO 4G Q&A, Help & Troubleshooting] Captain_Throwback:
You can flash recovery via fastboot or via PC36IMG.zip. These methods are well documented; a search should yield the information you need.

I don't know what ROMs have volume wake, but I'd think a search would help there as well.
[EVO 4G Q&A, Help & Troubleshooting] jlmancuso:
Most of the new jb roms have volume wake. Also my cyanmobile gb rom has it. Fyi of your phone happens to power off here is a trick to power it up. Connect charger remove battery and reinsert battery. You might have to do it a couple of times but it will boot your phone. Hope this helps you out.