[Q] Nexus 7 2013 bad battery timing. - Nexus 7 (2013) Q&A

I have a Nexus 7 2013 , I use and change custom roms very often.
Every thing runs fine but the only problem I face is bad battery timing.
The situation is even bad on non-rooted stock firmware.
The battery only last 3 to 3.5 hours (Screen On Time) while browsing and about 40 minutes of gaming and without gaming I get about 4 to 4.5 (Screen On Time) .
I run greenify very casually so no apps run in background and drain battery but battery life is still very poor.
Any suggestions will help greatly.

Related

[CM7] Battery drain fix

I found this thread on Desize HD forum:
http://forum.xda-developers.com/showthread.php?t=984337&page=6
then i wonder can we get some information to know where the problem come from?=> we can fix the battery drain issue on all GB build. Hope it help out devs. cheer
Sorry for my bad english
What drain?
Are there really so many problems with drainage on CM7/GB builds?
2d, 3h, 25m on battery with 60% left.
The first CM7 build i used is the one in my sig. I'm amazed by the lack of problems with this build
The only drain that's still ongoing is bluetooth on standby drain AFAIK. This DSP issue is not related to the HD2, thus I don't think it's valid to implement. With bluetooth turned off and heavy usage, I get roughly 2 days out of my device also... I really don't think the drain is a big issue. Honestly, the biggest issues is (And it's not much): Robot voice once in a while, some Wifi issues (EAP mostly), Wakeup lag and BT drain on standby.
the drain is related to the toolchain used to compile our kernals and roms?). I however can do easily 3 days with out charging on android, using the same setup as KrewsialNL
Actually
Actually, i get pretty horrible battery life across all builds...
it could be that I have a v1 TMOUS hd2 though... something is weird with it. I always get random energy spikes (even with sync off)
can't get more than 14-18 hours...
My battery drainage is fine using the Typhoon rom. I think some people are expecting a little too much out of their batteries.
It's only 1230mah if it was 1500mah it would have been way better.
KrewsialNL said:
Are there really so many problems with drainage on CM7/GB builds?
2d, 3h, 25m on battery with 60% left.
The first CM7 build i used is the one in my sig. I'm amazed by the lack of problems with this build
Click to expand...
Click to collapse
How on EARTH are you getting that long out of your battery?
Are you using the phone at all?
I've used loads of different builds and never come even close to half that battery life, in fact no more than about 20hours MAX with light usage.
I am using Juice Defender to disable my WiFi and Data when the phone is not in use too.
Any tips?
I have run all the latest GB builds and I also get this weird spike (around 70mA to 100mA) usually when I leave the phone overnight (not charging) and this drains my battery down to almost empty by morning. This is with bluetooth off and wifi on. No apps installed on the phone.
KrewsialNL said:
Are there really so many problems with drainage on CM7/GB builds?
2d, 3h, 25m on battery with 60% left.
The first CM7 build i used is the one in my sig. I'm amazed by the lack of problems with this build
Click to expand...
Click to collapse
mmmm That CM7 build has great battery life but yours is beyond reality... are you sure you haven't connect the phone in those 2 days?
Mine says "4D 10h 1m 50s on battery" and has more than 50% left but it has 3 green spikes (in battery use, I connected 3 times but didnt charge to 100%)
Crin said:
How on EARTH are you getting that long out of your battery?
Are you using the phone at all?
I've used loads of different builds and never come even close to half that battery life, in fact no more than about 20hours MAX with light usage.
I am using Juice Defender to disable my WiFi and Data when the phone is not in use too.
Any tips?
Click to expand...
Click to collapse
Well I was going to say exactly EXACTLY the same thing! Except that i didn't like Juice Defender
Is battery THAT GOOD?!?
Battery
well yes, it's certainly feasible...
it's just that MY hd2 specifically gets random spikes in energy usage.... I'm not sure why, been trying to resolve it for a while.
I don't really get those spikes in WM, only when I go someplace that doesn't have signal... it will spike up initially and then settle down (dutty's rom)
However, with these android roms.... i get random spikes of increased current around 100-200ma while the phone is in sleep. Bluetooth off, sync off, wifi off etc.
also, when the phone is in use... it is not uncommon to have current of 400+ consumption... hitting 500+ when web browsing...
I never got this high in windows mobile...generally around 400 when streaming youtube in wm. I'm wondering if it is an android thing...
edit:
in a perfect world, our battery consumption should stay around 4ma constantly... Which we know that isn't always the case because we have data syncing and signal strength changing...but to give you an idea....
if we have a 1230mah battery... dividing that by the current draw (4ma) gives us a standby time of ~307.5h....
that's ~12.8 days
however, with my current usage... say, i'm getting about 14 hours out of my battery... that's like if i constantly had a current draw of ~68ma...
Taking a look of my usage charts.... if we say the phone is only in use for 6 hours, and the rest is in standby for 10h at 4ma...
the 6 hours would have a power consumption of ~300ma the whole time....
which i think is kinda excessive....
meh. i don't know.
perhaps i'll upload my usage charts later... lately on this new rom, i've been getting only 8 hours of battery :/
but it could be because i've been playing around with it too much
I am on a TMO US HD2 first generation and I am doing good if I can get 6 hrs of battery with the stock battery and normal usage. No wifi, 3/4g, no GPS, and auto screen dim. If I am using the net or something like angry birds I am down to 2-3 hrs max. I have tried underclocking and still not getting a full 8 hrs of life. Would love to find a solid rom that lasts 12 hrs or more. Ordered an extended battery so maybe that will help a bit.
tageeboy said:
I am on a TMO US HD2 first generation and I am doing good if I can get 6 hrs of battery with the stock battery and normal usage. No wifi, 3/4g, no GPS, and auto screen dim. If I am using the net or something like angry birds I am down to 2-3 hrs max. I have tried underclocking and still not getting a full 8 hrs of life. Would love to find a solid rom that lasts 12 hrs or more. Ordered an extended battery so maybe that will help a bit.
Click to expand...
Click to collapse
I have the same TMO US 1st Gen. I'm using
TyphooN CyanogenMod 7
http://forum.xda-developers.com/showthread.php?t=933951 just uncheck bluethoot when you don't use it.
I get from 1 to 2 days with moderate use.
Define what's good and what bad with the standard battery? I have been getting on average about 10-15 hours and that's with doing alot of texting, web surfing, mp3 player and xda lol, and crunchyroll (streaming shows) usually over 3g but sometimes over 4g.
Sent from my PC36100 using XDA Premium App
robrob777 said:
I have the same TMO US 1st Gen. I'm using
TyphooN CyanogenMod 7
http://forum.xda-developers.com/showthread.php?t=933951 just uncheck bluethoot when you don't use it.
I get from 1 to 2 days with moderate use.
Click to expand...
Click to collapse
Thanks for the tip. I have a second HD2 that I test builds on and I was actually in the process of installing the ROM you mentioned last night I am excited that this may be the rom to drop on my daily driver I have noticed that non GB roms (2.2) seem to have much stronger WIFI signal strength so I am hopeful this GB version will have solid WIFI signal too. Love using GB but hate the wifi issues I keep having. Thanks agian for the tip.
Well, this thread didn't go anywhere.
I'm finally trying to get up the courage to switch to a NAND rom.
I get awful battery life out of my SD build I've been playing with and that is with a 1500mAh replacement battery.
I'd hate to switch only to find myself in the same position?
Looking at TyphooN CyanogenMod 7 Nightly v3.6.0 . . .
Revhead said:
Well, this thread didn't go anywhere.
I'm finally trying to get up the courage to switch to a NAND rom.
I get awful battery life out of my SD build I've been playing with and that is with a 1500mAh replacement battery.
I'd hate to switch only to find myself in the same position?
Looking at TyphooN CyanogenMod 7 Nightly v3.6.0 . . .
Click to expand...
Click to collapse
battery drain on SD builds may vary from SD card used.
I can confirm that from my experience, i was not able to use the phone on the second day (total up time 1d + 12h TOP) when i was on SD builds
BUT.. while on NAND (no A2SD no Data2SD)
I can confirm that i can now use the phone for 2d + some hours, depending on use.
All battery info apps told me that battery life is Good (not excellent, not very good).
Made the switch. Battery life as good if not better than with WM and SD build. I feel the biggest improvement came when I installed setCPU.
Sent from my HTC HD2 using XDA App

[Q] HOX battery problem

hello m usin CM 10 4.1.2 on my HOX and m having issue with battery my drain horrible last day my use 2 hours of screen on chating on facebookfor 2 hours, 10 min of surfing and my battery died in 5 hrs only so plz suggest me for better rom or suggest me for any other solution.
CM doesn't last as long as stock roms from my experience. 2-3 hours screen on time sounds pretty normal though. This is a BIG power hungry screen.
You can play around with different kernels if you want to try something... Otherwise, stock seems to have the best battery life at the moment.

CleanRom 5 battery

Hi,
This question is for anyone using the latest CleanRom on their Note II. Just wondering if your average battery drain is around 4-5%/h. I use BetteryBatteryStats. I also check the Battery section under Settings. The most battery life I have been able to get is 12 - 15 h with 1-2h screen time. At this point, the battery is at less than 10%. Is this normal ? I thought I remembered getting better life from older versions of CleanRom. I know these numbers are never achievable on any AOSP rom that I have tried. Just wanted to see what everyone's experience is with battery life. Just post any thoughts!
Thanks for your feedback! I appreciate your time!
AEiX said:
Hi,
This question is for anyone using the latest CleanRom on their Note II. Just wondering if your average battery drain is around 4-5%/h. I use BetteryBatteryStats. I also check the Battery section under Settings. The most battery life I have been able to get is 12 - 15 h with 1-2h screen time. At this point, the battery is at less than 10%. Is this normal ? I thought I remembered getting better life from older versions of CleanRom. I know these numbers are never achievable on any AOSP rom that I have tried. Just wanted to see what everyone's experience is with battery life. Just post any thoughts!
Thanks for your feedback! I appreciate your time!
Click to expand...
Click to collapse
Just like anyone else, it all depends on what kernel you're on and what apps you have wakelocking. I've been using Clean 5.0 as my daily for months and the battery life lasts me throughout the day until I need to sleep at which point I plug in... but sometimes, I'm running into fast battery drain due to some apps going nuts on me or when Bluetooth is trying to link from a long distance (where the phone would heat up and drain like mad... btw this only happened to me twice in many months). After a reboot, it usually clears up and after a recharge, I'm back to 14 hours with 20% left at night. I'm not one to be anal about my battery drain if it lasts me until I sleep (because I have NEVER had a smartphone that would last me that long without plugging in... in fact, barely half the day would be when my device would need to be fed).
I'm using Perseus' latest with a few screen tweaks, no CPU or power tweaks, using Facebook constantly, Pulse, SMS/MMS, camera throughout the day, Next 3D launcher with all the fun animations running, YouTube, Pandora when driving (so my Bluetooth is on constantly)... let's just say I'm a heavy user. When my kids get a hold of my device, they run a bunch of games and drain around 10% by the time I get it back.
I am happy with the battery life on my Clean Rom 5.0/Perseus Note II. I won't fuss about it as long as it lasts longer than half the day because that is what I was used before upgrading.

[Q] Bought a Nexus 7 3 days ago. Is this normal?

So after purchasing the Nexus 7 (2013) 16gb WIFI edition I noticed a problem with the battery that is really bugging me. Im on stock non rooted 4.4.2 and the battery is HORRIBLE. Moderate use finds me having to charge the thing almost twice a day. Its especially bad when im watching a youtube video or streaming a movie on netflix (Non GPU intensive gaming also), it will go down about 1% every 3 minutes not exaggerating. I have heard stories on here of Nexus 7 owners getting like a day or two out of the battery. Is there some kind of ROM or kernel out there that is good battery life? Is my tablet just a defect?
p.s. I have my brightness medium, GPS off, and i keep my WIFI always on.
Battery isn't intended to go a day or two and haven't heard of anyone's doing that. I use elementalx kernel, slightly over clocked, get about 10 hours with moderate use. Hard to tell now because I keep mine on a wireless charger when I set it down.
Netflix does drain the battery a lot. If you watch it all day you're gonna have to charge it. Can try out any of the Roms and kernels, see what works for you.
Sent from my Nexus 7 using xda app-developers app
My nexus battery isn't that different from yours so i'd say it's not a defect from your tablet but it's our battery that isn't that good. I use sinless rom with elementalx kernel with cpu at 1.8 ghz and if i play need for speed for a couple hours and watch 1 or 2 movies drains really fast. the battery is the only thing i hate on this tablet, that and the fact that there's no sd card slot..
my nexus 7 also does not make much more, usually 7 hours screen time. it is often enough to look at a video on google play, and surf a little with wifi
datallboy said:
Battery isn't intended to go a day or two and haven't heard of anyone's doing that. I use elementalx kernel, slightly over clocked, get about 10 hours with moderate use. Hard to tell now because I keep mine on a wireless charger when I set it down.
Netflix does drain the battery a lot. If you watch it all day you're gonna have to charge it. Can try out any of the Roms and kernels, see what works for you.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Does the elementalx kernel work on stock? If so I might give it a try.
Sent from my Nexus 7 using XDA Premium 4 mobile app
Yep, works on stock and all aosp Roms.
Sent from my Nexus 7 using xda app-developers app
Standby time is where the battery lasts for days, actual usage will dictate how often you need to charge. I usually only charge every 4-6 days with about 7 hours screen time. Naturally if you use the tablet several hours worth a day you will have to charge more frequently. The battery is perfectly acceptable, better than the 2012 N7 even though it's smaller.
Sent from my Nexus 5 using xda premium
The 2013 nexus 7 has an incredibly bright screen.... when turned down, it uses very little power, but if you turn it up all the way, it will drain battery like mad. What are you keeping your screen level at? If you keep it in the middle like you say, maybe turn it down a bit. The middle is like max brightness on other devices.... so watch your brightness and you will net much better battery life... also disable any sync/ wifi/bluetooth if you arent currently using them. that will help.
I flashed back to 4.3 to get good battery life again but I did that mainly cause 4.4 and up gave me touch screen issues I didn't have with 4.3
Sent from my Nexus 7 using xda app-developers app
Follow the steps below.
1. Apps like Facebook, Instagram, Mail apps drain more battery even though if you are not using it. So configure them to sync occasionally at 3 hours or more to save your battery. You can also manually turn off sync in the Quick settings & turn On only when you need it.
2. Use apps like Greenify to limit apps like Facebook, Netflix to running on the background.
3. Set your brightness to auto. If you wanna configure your brightness more, use Lux Auto brightness app.
4. Install the following apps to monitor your battery like Battery Stats Plus, Cpu spy, Battery widget & note the values.
5.Also give a few days to analyse battery behaviour & reply if you found changes in the battery.
Nexus 7 (2013) with stock AOSP ROM(4.4.2), FRANCO Kernel (r12)

Battery life on 5X

Hi,
Do you have problems with the battery life on the stock ROM?
No matter what version I am running like 7.0 or 7.1 the battery life is still bad like 2:30 hours of screen on time while just looking on Facebook and Twitter, nothing hard...
My Moto G 2013 had 5 hours in those conditions even more sometimes and that's strange beacuse 5X has a larger battery and perhaps a more energy efficient SoC.
Do you know any costum ROM wich has great battery life and RAM management?
Sent from my Nexus 5X using Tapatalk
Seems pretty normal for the N5X. Try the search function or read the Advanced Interactive Governor thread for options to you can try. Don't expect miracles though.
720p screen phones with weaker processing will get longer battery life than a 1080p screen phone with stronger processing. Moto G devices get some of the longest battery life for this reason.
2.5 hours is especially low for a 5x though. 3-4 would be average when draining from 100% to 0% while actively using the screen a lot, and I regularly see 5-6 hours SoT with my usage.
Couldn't say anymore without screenshots. There is a battery thread in General for sharing screenshots and you can see examples of which to post.

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