Develop Bugs

[Q]Who gets 16+ hours of hard core use with battery?

So who gets 16 or more hours of battery life with hard core usage?
What Rom and Kernel are you using?
Hard Core I mean having 4g on all the time. Surfing Know and then. Playing Games. Having sync on all the time and more.

Me! I am running stock with bullet 2.7b kernel. It wasn't like this in the beginning. Took a while (about a week) of keeping this rom and kernel combination before I can now get 20 hours with pretty heavy use. And even this is at school where I barely have signal. Last time I had this battery was on ip4
Sent from my SGH-T989 using XDA App

Oh and btw. I only get 20 hours with launcher pro. For some reason touchwiz is a battery hog. Shame cuz I love touchwiz....
Sent from my SGH-T989 using XDA App

Whoever gets 20hrs+ isint using their phone with heavy usage. Mines usually last 12-14 hours with abut 5 hours on screen time on 4G. ****...I can leave my phone at home and not touch it and I can get like 30 hours. The point is 20 hours is BS if your on your phone like I usually am. I happy cause I got a extra battery or bring my charger to work. I'm on Juggernaut with stock kernel which I know definitely eats less battery than the custom kernels. The custom kernels do a great job when in deep sleep but when you are using it, it drains faster than the stock kernel.

Oh Cause Im looking for a combo that gives me 16 hours or at least an entire day with heavy usage...

Cm7 rom and kernel. overclocked with smartassv2. 19 hours. 6hours 48minutes screen on. playing games all day and texting and quite a few phone calls.
Win

batt drain is realy fast with all custom roms. all roms are bad. not enough developers.. because they sell it only in usa..so after 10 days with my t989 today i hve sold it. im happy now waiting reduce price of nexus for buy..

kikiodead said:
Cm7 rom and kernel. overclocked with smartassv2. 19 hours. 6hours 48minutes screen on. playing games all day and texting and quite a few phone calls.
Win
Click to expand...
Click to collapse
Can anybody beat this lol...

"Hard Usage" is very relative. Screen on time is a much better metric assuming that you are actively doing something with the screen on and have a short screen timeout or manually turn off the screen.
Having said that I get 3-4 hrs of screen on time with Bullet 2.9 and Jug3.69 "hard usage" with 25% brightness.

Just 3-4 hours. Wow. That is bad.

quarkw said:
batt drain is realy fast with all custom roms. all roms are bad. not enough developers.. because they sell it only in usa..so after 10 days with my t989 today i hve sold it. im happy now waiting reduce price of nexus for buy..
Click to expand...
Click to collapse
This phone is killers man.... Samsung Galaxy S series... Amazing

ysuleman said:
Just 3-4 hours. Wow. That is bad.
Click to expand...
Click to collapse
I thought it was pretty good actually. That is 3-4 with the "screen on" utilizing 4G network. Total battery life is in the 15-20 hr range.
By comparison my Mytouch 4G could only barely do 3hrs and my Amaze 4G could hardly do 2-2.5 hrs. You can't really compare battery life between multiple people as their usage pattern is different. What really matters is battery life for yourself across different phones.

vw671 said:
I thought it was pretty good actually. That is 3-4 with the "screen on" utilizing 4G network. Total battery life is in the 15-20 hr range.
By comparison my Mytouch 4G could only barely do 3hrs and my Amaze 4G could hardly do 2-2.5 hrs. You can't really compare battery life between multiple people as their usage pattern is different. What really matters is battery life for yourself across different phones.
Click to expand...
Click to collapse
I agree, they guy who said he play games ALL DAY and get 19 hours on CM7 is total BS. When I play games like Jelly Defense or Eternity Warriors, the battery goes down pretty quick and it definitely won't last ALL DAY as the other guy claims.

With moderate use I get
{
"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"
}
With heavy moderate use I pass the 12hr mark which is enough for me...(still at work after 12hrs I'm not picking up unless you buying afterwards) I'm on Juggernaut 3.7 bullet 2.9 don't bother with extra scritps, juice defender or llama too many bugs that happen for an extra 15mins
Sent from my SGH-T989 using Tapatalk

real hard core use, as in every feature on, and lots of screen ON time with web surfing or playing games
i can get a max of between 6~8 hours
soft core use, it can pull a whole day, as in 7 am to like 11 pm
while we are at it, this is yet another battery life topic, so please continue in the original topic http://forum.xda-developers.com/showthread.php?t=1301609

New original battery + Full first time calibration = 4h15 of screen time

I just bought a new battery this weekend ( original 1750mah ) and i did a first time calibration ( charging for 10h without unplugging and drain it all until my phone closes by itself). Now i have a freaking awesome battery life with mid-heavy usage. 4h15 of screen time with 50% brightness, wifi on all the time, gps, auto-sync, franco kernel #11, XDA for few hours(white background), youtube, about 250 txt messages, 30 min of talk time. I just beat a new record submit your best screen on time.
**next step : 5h of screen time ( 30% brightness, no facebook app)
{
"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"
}
Sent from my Galaxy Nexus using XDA App

Here is my background ( all blue)
Sent from my Galaxy Nexus using XDA App

......
Sent from my Galaxy Nexus using XDA App

If you search here, someone made an experiment. He set to airplane mode and set the screen to display all pure black with lowest brightness. That resulted with about 10 hours 40 minutes.
So, that's max screen on time with standard battery.
Here my battery life with extended 2000mAh GSM battery
Granted, I don't sync and I set to brightness at 10%. But that's enough for me. Mostly I use my phone for web browsing, fb, g+, xda, games, etc. The stats below include Sygic GPS navigation for about 20 minutes.
At 61 hours stand by with 4 hours screen on time, I am very happy
Sent from my Galaxy Nexus using xda premium

I've gotten 5.25 hours as my record. Was strictly a wifi data run. I've also got 4.75 twice, HSPA data, but your 4.25 is probably more impressive if your background is that and the other stuff mixed in. All 1750 mah. Just got my 2000 mah yesterday.
Sent from my Nexus in Texas.

I am getting about 5 hours of on screen time with my gsm Galaxy Nexus with the 2000mah extended battery from simshop,wifi on,100% brightness always & none of my settings are focused on saving battery life.Here is a screenshot of the wallpaper I usually use,sometimes I throw a lwp on.I also for testing purposes put Netflix on at 100% battery and streamed until the battery got to 5% and ended up getting 4 hours 23 minutes with the same settings as I wrote above.I am running 4.0.1 stock deodexed rom.Stock kernel.
Maybe this will finally be the thread where everyone actually shares the relevant information like Rom & Kernel,GSM/LTE,Extended or Stock battery, Screen Brightness,Sync on/off,Wifi/Data,Static or LWP.On screen time as opposed to just how long the phone has been in idle & even possibly the technique used to calibrate the battery.
Sent from my Galaxy Nexus using xda premium

FYI all the posters above me are GSM GNexus owners.
max you can get on a LTE device running 4G all day is about 2hrs 30 minutes max on-screen time.

aohus said:
FYI all the posters above me are GSM GNexus owners.
max you can get on a LTE device running 4G all day is about 2hrs 30 minutes max on-screen time.
Click to expand...
Click to collapse
I've gotten 4 hours display on time with 4g on. I usually get around 3.5 hours though. 4g+wifi. Battery lasted 12 hours too. Right now I'm at 1.5 hours display on, 11 hours on battery. 4g on all day and wifi on at home.
Sent from my Galaxy Nexus using XDA App

erismaster said:
I've gotten 4 hours display on time with 4g on. I usually get around 3.5 hours though. 4g+wifi. Battery lasted 12 hours too. Right now I'm at 1.5 hours display on, 11 hours on battery. 4g on all day and wifi on at home.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
are you running stock or custom ROM/kernel?
do you have wifi on most of the day? would love to see your battery stats if possible including on-screen time.

aohus said:
are you running stock or custom ROM/kernel?
do you have wifi on most of the day? would love to see your battery stats if possible including on-screen time.
Click to expand...
Click to collapse
Using redemption rom with stock kernel. Yeah I have wifi on the whole time I'm home. Which is usually from 4- til I plug in. I am on the extended battery. But I don't notice much of a boost from the normal battery with it. I also have gtalk signed in all day and use that almost constantly. Although today I haven't. My phone also always stays cool. It never gets warm.
Also I have everything on normal sync. Gmail,fb,twitter. And auto brightness.
Sent from my Galaxy Nexus using XDA App

erismaster said:
I've gotten 4 hours display on time with 4g on. I usually get around 3.5 hours though. 4g+wifi. Battery lasted 12 hours too. Right now I'm at 1.5 hours display on, 11 hours on battery. 4g on all day and wifi on at home.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
If you're using 4G+wifi, aren't you really just using wifi? With wifi on, I can make it through the weekend easily with light to moderate use. 4G, not so much.

1.5 hour battery life

Battery life goes down 1% every minute the screen is on... This is rediculous. I'm running the latest franco kernel + liquid rom.

Uhhh cool story? Use your phone an entire day and post your battery stats when you're at < 5% battery left. Then we can talk about your actual battery life...

Let me bite this troll bait.
I'm sure this phone doesn't last 1.5hours, i'm sure mine doesn't.

@OP that's prolly why the guy sold it
good day.

You should be getting around 4 hours of screen on time, try different kernels if you don't achieve near this. I get 5+ hours everyday usign my set up, just look around at countless other thread to get an idea of what you can do.

chopper the dog said:
@OP that's prolly why the guy sold it
good day.
Click to expand...
Click to collapse
-.-
{
"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'm sure if I only left the screen on.. it would maybe barely last more than 2 hours.

Might have a bad battery
Sent from my Galaxy Nexus using xda premium

OP looks like you have some serious wakelock problems. And/or bad hardware.

exzacklyright said:
-.-
I'm sure if I only left the screen on.. it would maybe barely last more than 2 hours.
Click to expand...
Click to collapse
Try a different kernal. Come back if that doesn't work.
Sent from my Galaxy Nexus running AOKP+Franco

theking_13 said:
Try a different kernal. Come back if that doesn't work.
Sent from my Galaxy Nexus running AOKP+Franco
Click to expand...
Click to collapse
Um did you see that graph? He has more problems than just the kernel.

Is this cdma/verizon

Mine is and I'll fess up that this is pretty accurate. I can get about 4 hours screen-on time with my 3800mAh extended battery. The 2100mAh extended battery gets me about an hour screen on over the course of a day.
This screen is the hungriest thing I've seen in my life.

stkiswr said:
Is this cdma/verizon
Click to expand...
Click to collapse
yes
theking_13 said:
You should be getting around 4 hours of screen on time, try different kernels if you don't achieve near this. I get 5+ hours everyday usign my set up, just look around at countless other thread to get an idea of what you can do.
Click to expand...
Click to collapse
Which kernels besides franco give good battery life?

If you're getting 1.5 hours battery life then you're NOT using your phone, period. This is a smart phone, if you can manager more than 1 hour then you probably should have kept your StarTAC.
Edit: read a few more posts, wasn't troll bait it turns out.
As someone mentioned earlier in the thread, wakelocks are one avenue to explore. Install Better Battery Stats and follow the instructions/procedures, etc... from its thread here on XDA.

CMNein said:
If you're getting 1.5 hours battery life then you're NOT using your phone, period. This is a smart phone, if you can manager more than 1 hour then you probably should have kept your StarTAC.
Edit: read a few more posts, wasn't troll bait it turns out.
As someone mentioned earlier in the thread, wakelocks are one avenue to explore. Install Better Battery Stats and follow the instructions/procedures, etc... from its thread here on XDA.
Click to expand...
Click to collapse
How does 1.5 hours mean they aren't using the phone..?
Sent from my Galaxy Nexus using xda premium

|Jason8| said:
Mine is and I'll fess up that this is pretty accurate. I can get about 4 hours screen-on time with my 3800mAh extended battery. The 2100mAh extended battery gets me about an hour screen on over the course of a day.
This screen is the hungriest thing I've seen in my life.
Click to expand...
Click to collapse
That's God awful. Are you in a fringe area? The screen isn't THAT bad.. there is something else screwing you over.
Sent from my Galaxy Nexus using xda premium

exzacklyright said:
yes
Which kernels besides franco give good battery life?
Click to expand...
Click to collapse
If you are on 3g/4g and a verizon nexus on stock battery...2 hrs screen time is normal. Get used to it. Sorry. My wife's on stock 4.0.2 does exactly that. Pathetic. We bought an extended battery. Still might get in the 4 hour range. I love the nexus but damn the battery is terrible. I get 6-7 hrs screen on time on my maxx using 3g/4g. Today she got close to 4 hrs but it was a 4g/Wi-Fi mix.
Verizon nexus on 3g gets around 2 hrs screen on time if you actually are using data and keeping everything synced like a smartphone should be able to do.

stkiswr said:
If you are on 3g/4g and a verizon nexus on stock battery...2 hrs screen time is normal. Get used to it. Sorry. My wife's on stock 4.0.2 does exactly that. Pathetic. We bought an extended battery. Still might get in the 4 hour range. I love the nexus but damn the battery is terrible. I get 6-7 hrs screen on time on my maxx using 3g/4g. Today she got close to 4 hrs but it was a 4g/Wi-Fi mix.
Verizon nexus on 3g gets around 2 hrs screen on time if you actually are using data and keeping everything synced like a smartphone should be able to do.
Click to expand...
Click to collapse
THanks for the reply.. guess i have to leave it plugged in all day... lmao.

either that or get a sgs3... when it comes out

Gsm gnex (europe) on 4.0.4 gives between 4-5 h screen-ON time on stock setup and 1750mAh battery. Way to go verizon and LTE for ruining the phone's reputation. Most of the people reporting issues here on the forums are verizon or sprint users.
Sent from my Galaxy Nexus using xda premium

Jellybean batt life observation

Seems jb batt life is pretty bad. 2%/hr idle. Alot of wake locks also from maps and networklocator. :Im assuming all from google now?

Noticed that over the last 24 hours battery life was worse than usual while I was on jellybean. Think you are probably right that Google now is the culprit, I really hope that it gets better before the ota but at the moment it just doesn't seem like it will be worth "upgrading".
Sent from my Cyanogenmodded GNex

emerica243 said:
Seems jb batt life is pretty bad. 2%/hr idle. Alot of wake locks also from maps and networklocator. :Im assuming all from google now?
Click to expand...
Click to collapse
Well, it must be Google Now. I turned it off and my battery is relatively the same as it was before. When using background location update, you can expect it to drain battery a little. Google Now uses your location data quite a bit.

I left my phobe at 96% came back 4 hours later and still on 96
Sent from my Galaxy Nexus using xda premium

I thought JB was pretty good on the battery from my experiences. Did my overnight sleep test and it drained 3% in 8 hours just like ICS did.
As for screen on time, I feel that it's even better than before.
{
"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 would be getting 4 hours screen on time if the battery drained to 0.
I'm very satisfied.
Sent from my Galaxy Nexus using xda premium

I'm getting pretty good batterylife with JB. Over 10 hours on battery and over 3 hours of screentime and I still got 40% left with 2000mah oem battery.

I have yet to flash JB, but one thing concerns me. Is this not just a dev preview and not the final product that will be pushed out mid-July? Not to sound harsh, but I don't see why complaints are being made about battery life at this stage of JB. Just my 2 cents, fyi...
Sent from my Galaxy Nexus using xda app-developers app

My battery life is no different.
You also have to remember this is a developers preview build and not the official release.
Sent from my Galaxy Nexus using xda premium

My battery life over the ~12 hours i had jelly installed seemed the same. Good standvy times also. I think it will depend on how much of the new stuff google added you use that will determine battery life. Some of that stuff will make a big impact.
butter and jelly please...

leelaa said:
I left my phobe at 96% came back 4 hours later and still on 96
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
What kernel are you on? and what freq\gov?

emerica243 said:
What kernel are you on? and what freq\gov?
Click to expand...
Click to collapse
All stock, changed nothing at all, for me its best that way (for now)
Sent from my Galaxy Nexus using xda premium

Even though its just a Dev preview and to early to comment on this, I think its about the same on ICS if not better.
Completely stock , not even rooted.
Sent from my Galaxy Nexus using Tapatalk 2

If you are getting bad battery life and wake issues, check your apps. I've heard LightFlow was causing wakelocks b/c it isn't optimzied for JB yet. I've deleted it until they can get it updated. So far, my battery life hasn't been great b/c I can't keep my hands off of it

Yeah, I would agree that battery life seems pretty good. It seems a little worse on Franco.kernel than stock, but hey, it's a new kernel and he is still trying to get all the kinks worked out. Also, no wakelocks on Light Flow, but I hope they update it soon, lots of my notifications stopped working.

Ehh I don't think its terrible at 2% an hour. Better than 10% an hour. I'll take a little drain for the beauty of JB
Sent from my JellyBelly Gnex

IMO I think it's draining a little fast, but I think that's because I keep flashing kernels and add-ons which reboots and causes the battery to drain super fast... and I've been messing with apps a lot too. So I'm gonna give it another day or two for a definitive answer.

kristovaher said:
Well, it must be Google Now. I turned it off and my battery is relatively the same as it was before. When using background location update, you can expect it to drain battery a little. Google Now uses your location data quite a bit.
Click to expand...
Click to collapse
How do i turn it off
Sent from my Jelly Beaned GNexus

I don't understand what people expect??? They want to have an awesome huge screen, fast processor, 4G speeds, want to run apps like crazy and then have Google Now constantly updating and expect the battery to last all day?? People just need to be realistic!

I'm completely stock and my battery is almost the same. Think it's a bit early to tell yet, we've all been playing more with the new rom
Sent from my Galaxy Nexus using xda premium

I am under the impression that the drain is slightly higher than on ICS, I am now 5,5 hours after charging, with 88% left (and a screen time of 18mins). On ICS I would be around 90 to 93% (with the 2000mAh battery). But nothing really to worry about.
Having said that, I did have lightflow installed and it did show in the wakelock screen, so I uninstalled that to see if the next charge gives me even better endurance.

Unimpressive battery life

Anybody else not terribly impressed with the battery life? Last night my bar Terry was at 87% and I pH Fayed about 30 minutes of of riptide and finished at 52% Rooted Running slim bean ROM, stock kernal. Not sure if this is normal but seems like it isn't as efficient as my former iPad 2.
Sent from my Nexus 7 using xda app-developers app

I played Riptide 2 with 80% brightness for 1 hour and it only drained around 15-20% if I remember yesterday and I got my tablet yesterday as well so the battery hasn't settled in yet.

No complaints about battery life here. It's outperforming any expectations I had previously.

At the beginning, my battery drained heavily after a few hours with the screen off! After a couple of days however, battery life is the greatest than on any device I have owned. Perhaps it takes a couple of days. Overnight idle, only 2% battery drain.
Sent from my Nexus 7 using Tapatalk HD

I'm using Carbon rom with Elemental kernel, and my battery life is awesome. Try a different kernel, and you might get better results

Stock Rom + Jassy 5 Kernel
1d 7h 45min run time (51min screen, with gaming RR3 for 9min) Gives me still 78% battery life left.
No fancy settings.
On stock Kernel, i was getting roughly 2 1/2 - 3 days battery with 4 hours of screen time and 60-90min of intense gaming.
So I think you might have a rouge app or its the rom/kernel (yes its stock to the rom but is it modified in any way?)

Just plugged my n7 in this morning to charge, was at 6%. 6d12h uptime, 7h20 screentime (90% reading in Google Play Books). Stock, rooted, wifi set to off when idle.

Gonna have to mess around with some of the settings. Just watched a one hour show and battery went from 97-76%
Sent from my Nexus 7 using xda app-developers app

DPCardoza said:
Gonna have to mess around with some of the settings. Just watched a one hour show and battery went from 97-76%
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
You definitely have an issue with your battery...
Sent from my SGH-T999V using xda app-developers app

I'm getting about the same battery life as the old one streaming Netflix. But if it's just regular browsing is a year better
Sent from my Nexus 7 using xda app-developers app

DPCardoza said:
Gonna have to mess around with some of the settings. Just watched a one hour show and battery went from 97-76%
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Might want to see how stock does first? then maybe try a rom.

I had terrible battery life too, even on standby. Turns out it was a faulty unit.

Try it stock then compare. I got awesome battery life on mine stock better that OG N7
Sent from my SPH-L710 using Tapatalk 4
Team SXTP

Are you guys having the battery drain while plugged in and watching Netflix? I feel as if this isn't normal. I even had lux installed with brightness at -50%
{
"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"
}
Sent from my Nexus 7 using Tapatalk 4

I think the problem is that you're comparing the battery life to that of an iPad. iOS devices are going to blow most Android devices out of the water when it comes to battery life.
Having said that, my new N7 seems to have better battery life than the 2012 N7.

I have been out of the loop with recent android updates, and my most recent exchanged device has very high Mediaserver usage-56% used, 10h kept awake and my battery is currently at 54%. Neither of the previous N7s I had showed this same issue, and I have used a very minimal amount of time actually using music/pictures apps. Disabling the stock media apps (gallery, play music) did nothing to stop it.

DPCardoza said:
Anybody else not terribly impressed with the battery life? Last night my bar Terry was at 87% and I pH Fayed about 30 minutes of of riptide and finished at 52% Rooted Running slim bean ROM, stock kernal. Not sure if this is normal but seems like it isn't as efficient as my former iPad 2.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
According to Aanandtech Nexus 7 2013 mini review, N7 2013's brightness is 86% brighter than N7 2012, 43% brighter than ipad 4, 54% brighter than Ipad mini, hence why when all are set to 100% brightness the N7's battery life will be substantially worse. Be more conservative with your brightness levels( 54% N7 2013 brightness =100% N7 2012 brightness) if you want battery life that is similar to Ipad2.

I've actually been very impressed with my 32GB battery life. I had the Nexus 7 (2012) 16GB and it would go dead running AOKP if left off the charger (no actual use) for like three days. I have stock 2012 32GB and have been using it heavily (same apps) and it will definitely get me through the day even with what I would consider very heavy use. If I know I'm going to be hanging out at home playing a game with bluetooth and max screen brightness I always plug mine in though.
Overall, in my opinion, a definite improvement over the 2012 version, and I have no complaints.
Edit: I was also going to suggest getting the app "Battery Drain Analyzer". It provides some cool features the default battery drain section of settings does not. It includes a percentage drain/charge per hour, estimated battery life, some charts and stuff too so you can see what is using your power.

I'm getting 10+ hours battery life.

Compared to my iPad Mini's battery life, yes my nexus 7 battery does not impress me. I guess I shouldn't expect great battery life when I play games. Maybe it was a bug but once I was playing Dead Trigger and turned the screen off but the battery still dropped VERY quickly
L. Ive also noticed that playing some games, like SVZ Defense 2, pretty much keeps the battery level constant while charging.
But other than gaming, I find battery life adequate. It's not great, but good enough for my uses. Once I take the time to do some research I hope to find a ROM that will increase my units life.
But yeah, DO NOT compare battery life to an iPad's. You will not be happy. Oh well, at least these things are better in ever other regard!
Sent from my Nexus 7 using xda app-developers app