Develop Bugs

Impressive battery life

I have been very impressed with the battery life I've been getting on my Nexus. the talk time has been much higher than any phone I've owned. Here are a few screenshots of my battery life. These two days are pretty much my normal day (lol yeah I talk a lot on the phone).
The first post will be the day that about 50% of the time I was on wifi.
The 2nd post will be screenshots from a day of being connected to hsdpa for the entire day (no wifi at all).
My setup: I use push email, facebook sync, auto brightness, gps on, bluetooth on.
Also, when the phone first came I charged it completely then ran the battery down until the phone shut off. I then charged it completely without removing it from the charger.
Below is the day where I was connected to wifi about half the time:

These screenshots show the next day where I used no wifi at all and was connected to hsdpa the entire time.

I have had mine for 2 days, and I have to say it seems to have pretty good life as well, compared to my Atrix and Note. After reading about all the gripes here,
I was expecting the worst. This battery will more than get me through everything I need to do with it in my day, but I suppose it all depends on what you do with the phone.

randypurcz said:
I have had mine for 2 days, and I have to say it seems to have pretty good life as well, compared to my Atrix and Note. After reading about all the gripes here,
I was expecting the worst. This battery will more than get me through everything I need to do with it in my day, but I suppose it all depends on what you do with the phone.
Click to expand...
Click to collapse
Coming from a G2x with a terrible 10 hour battery life, anything I get out of this is freaking fantastic compared to it! I Just wish the devs start getting out some UVed kernels so I can make it longer through the day! I consider myself a heavy user/texter (girlfriend ) and so I'd like to get through the whole day (~18 hours) without a charge I must say, I got to 16 hours yesterday and I was really pleased with that, never had a stock rom last so long without any tweeks!

this is my battery life after first day ....
Not to shabby haha
Sent from my Galaxy Nexus using xda premium

mysterioustko: I think you're usage is a bit different to the average user. With all that talk time you're using the screen a lot less. It seems the screen sucks a lot of power, and if you're not using it often a full charge lasts 4 to 6 hours longer.

MattSkeet said:
this is my battery life after first day ....
Not to shabby haha
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Yeah that's pretty strong battery life.
kam187 said:
mysterioustko: I think you're usage is a bit different to the average user. With all that talk time you're using the screen a lot less. It seems the screen sucks a lot of power, and if you're not using it often a full charge lasts 4 to 6 hours longer.
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Click to collapse
I typically average between 1-2 hours of screen time on an average day. But I talk A LOT each day lol. I'm impressed with the talk time because I've yet to see a phone besides this one that can go 6 hours of talk time in the real world when connected to hsdpa. Also, if you think about it, 1.5 hours of screen time is decent use. It's not a massive amount of use, but it's definitely not like it's getting no use. All in all I have been pleased with the battery life.

I don't know about you guys but im very disappointed in the battery life. With wifi turned on the entire day and no calls, just browsing and chatting on google talk, i got 3 hours 54 mins of screen on time before the phone reached 12% battery. I think thstss pretty horrendous. I was hoping for 7 hours or something of on screen time. My galaxy tab 10.1 has spoiled me i guess. Illl live with it because theres no other android phone im aware of that will give me more, but im kinda bummed about it.

My iPhone 4 has insane battery life... I cant imagine having less. Hopefully they sell larger batteries + backplates for the Galaxy Nexus?

ksc6000 said:
I don't know about you guys but im very disappointed in the battery life. With wifi turned on the entire day and no calls, just browsing and chatting on google talk, i got 3 hours 54 mins of screen on time before the phone reached 12% battery. I think thstss pretty horrendous. I was hoping for 7 hours or something of on screen time. My galaxy tab 10.1 has spoiled me i guess. Illl live with it because theres no other android phone im aware of that will give me more, but im kinda bummed about it.
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Click to collapse
Same here tbh. And the really frustrating part is, I only have 2G where I live so I was hoping to see really great battery life. Hasn't been the case so far though.
However having said that, just last night I flashed XXIK6 and while it's still very early to say for sure, it "appears" that battery life has significantly improved for me. Currently sitting on 91% after 3.5 hours with very, very light usage, IE: 15-20 mins screen on, 15 min phone calls, etc. Nothing to write home about sure, but way way better than before. It would normally be around 80% by now.
It's really sad when the very first thing you do after unlocking your phone is to go into setting to check your battery. Wish I could stop obsessing and enjoy this marvelous device without having to worry about it.

What did you guys do after getting the phone.
Did you charge it all the way to full before use, use and charge at the same time, or let it discharge all the way and then charge it to full?
Thanks.

I would have to say that the GN has the best battery life of any of my previous android phones. (G1, N1, Sensation) These things are very subjective though.

vapotrini said:
Same here tbh. And the really frustrating part is, I only have 2G where I live so I was hoping to see really great battery life. Hasn't been the case so far though.
However having said that, just last night I flashed XXIK6 and while it's still very early to say for sure, it "appears" that battery life has significantly improved for me. Currently sitting on 91% after 3.5 hours with very, very light usage, IE: 15-20 mins screen on, 15 min phone calls, etc. Nothing to write home about sure, but way way better than before. It would normally be around 80% by now.
It's really sad when the very first thing you do after unlocking your phone is to go into setting to check your battery. Wish I could stop obsessing and enjoy this marvelous device without having to worry about it.
Click to expand...
Click to collapse
Yeah, and I don't want to lose the thinness of this gorgeous phone with an extended battery, but 4 hours of screen on time? Anyways, can you let us know how that radio works out, I'm not expecting much, but still curious. If it is noticeably better, I will try to unlock+root this phone. I'm just a little scared to brick this 700$ device.

I'm just waiting for mod of web browser that will invert colours. Black backgrounds and white text ...that would extend battery life significantly. I swapped colours on xda app and pulse reader only browser left ha ha
Sent from my Galaxy Nexus using xda premium

The inverted colours app is already there isn't it? I saw it when I was fiddling about with the browser settings before
Sent from my Galaxy Nexus using XDA App

I think the battery life is spot on. Last phone, Nokia 5800 would last 8-10 hours max on stand by!!!!
Sent from my Galaxy Nexus using Tapatalk

Faz20 said:
The inverted colours app is already there isn't it? I saw it when I was fiddling about with the browser settings before
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
Yup, it's under accessibility in browser settings. Great if you read mainly text-only sites since it inverts image colours as well

2-3% per hour idle
I did a benchmark this afternoon for about 8 hours.
ITL41F rom, rooted + dcm kernel, otherwise stock. bluetooth, HSDPA, 1 gmail sync, and a few background sync that is very light.
idle the phone in home for 8 hours. the battery drops about 2-2.5% per hour consistently.

how long does it last with 'constant use' though?... from fully charged, to then having the screen on the whole time & doing web browsing, video watching, downloading, etc... (with data on, not wifi)

voxigenboy said:
how long does it last with 'constant use' though?... from fully charged, to then having the screen on the whole time & doing web browsing, video watching, downloading, etc... (with data on, not wifi)
Click to expand...
Click to collapse
with data screen straight you may get 4-5hours. With wifi probably 6 tops.
sent from outside big and inside small.

Something we keep forgetting Re: battery life

I've become obsessed with the poor battery life on my new Galaxy Nexus and I've been pouring over forums, videos and blogs to find out why it's so bad.
I keep hearing about people getting 8 hours, 11 hours, 14 hours before their phone dies, but this is not actual use time, it's idle time (I.e "I left the phone off the charger overnight and..."). WHY does the manufacturer rate this phone as having a 15 day standby life... FIFTEEN DAYS!!!!
Something is terribly wrong here. If I can't use the browser for more than an hour without the battery getting critical, then what's the point of a "super phone "? It seems useless. I don't even want to install games on this device, because I know I'll get frustrated by it chewing through the battery as I play.
I purchased this phone with a high priority on the HD video recording capabilities, but will I actually be able to film stuff while out and have enough juice in case I need to make a call? Something tells me I won't.
Maybe I'm just expecting too much or maybe manufacturers should stop making these phones so "super" and focus on the fact that these are portable devices which need to last at least the day. God forbid you went for a hike and had an emergency, only to find your phone dead after eight hours!
Rant over

My battery is currently at 60% after 13 hours and and 1:35 screen time.
I have absolutely no complaints about the battery. In fact I would say its the best out of any phone I've owned.
Sent from my Galaxy Nexus using xda premium

I feel you bud! The first 10-12% drops super fast then it seems to get a little better?
Sent from my Galaxy Nexus using xda premium

Cool story bro... For anyone who is planning to go on a hike in the near future, BRING A SPARE BATTERY OR GET A WALKIE TALKIE!!!

Mitchmoney said:
Cool story bro... For anyone who is planning to go on a hike in the near future, BRING A SPARE BATTERY OR GET A WALKIE TALKIE!!!
Click to expand...
Click to collapse
Not to mention that you shouldn't rely on a cellphone for calls out in the middle of the woods...

Mitchmoney said:
Cool story bro... For anyone who is planning to go on a hike in the near future, BRING A SPARE BATTERY OR GET A WALKIE TALKIE!!!
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Click to collapse
Good idea! Hahhahahaha
Sent from my Galaxy Nexus using Tapatalk

did u check out the 2100 mAh extended battery, it's working wonders for me

mike216 said:
I feel you bud! The first 10-12% drops super fast then it seems to get a little better?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
That's because when you pull your phone off the charger and it says it's @100%, it's lying. It's somewhere in between 95-99%. The first 10% is spent figuring out where you're really at.

I think op said it best himself. Maybe you're just expecting too much. Battery life is freaking awesome for a phone with a 4.65 inch oled screen. Reminds me of my trusty nokia e71 back in the day.
Sent from my Nexus in Texas.

KWKSLVR said:
That's because when you pull your phone off the charger and it says it's @100%, it's lying. It's somewhere in between 95-99%. The first 10% is spent figuring out where you're really at.
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Click to collapse
If your battery is properly calibrated, the first 5% is iffy. Just figured out how to properly calibrate less than two weeks ago and it doesn't include any software, like batterycalibration or resetting battery stats in cwm.
Sent from my Nexus in Texas.

Mitchmoney said:
Cool story bro... For anyone who is planning to go on a hike in the near future, BRING A SPARE BATTERY OR GET A WALKIE TALKIE!!!
Click to expand...
Click to collapse
You can kindly replace "hike" with "family outing", "work", "movies", night club", "sporting event", "errands", etc... having a spare battery or charger (or a second communication device!) on you all the time should NOT be the solution to poor design (either hardware or software or both).
Sent from my Transformer TF101 using Tapatalk

Lot's of misinformation in this thread.
A new Lithium-Ion battery (LiCoO2) is always 100% fully charged at 4.20 V (+- 0.05 V). This maximum voltage lowers with age and use of the cell. Both voltage and battery age can be precisely measured by your phone and translated into the battery % display. It's not a linear graph but it's not really rocket science either.
There is no calibration of LiIon cells, it's neither necessary nor possible, they work at 100% efficiency right from the start.

EP2008 said:
You can kindly replace "hike" with "family outing", "work", "movies", night club", "sporting event", "errands", etc... having a spare battery or charger (or a second communication device!) on you all the time should NOT be the solution to poor design (either hardware or software or both).
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
You going on some intense 12 hour night club runs?

El Daddy said:
My battery is currently at 60% after 13 hours and and 1:35 screen time.
I have absolutely no complaints about the battery. In fact I would say its the best out of any phone I've owned.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
i'm at 24% after 12.5h, 1:45h screen time (inverted theme browser and some brief facebook/twitter time...). This, to me is not acceptable. If I was using google maps + gps, how long until the battery died? 30 minutes? Less?? I'm not watching video, making calls, downloading torrents, using the camera or anything else that would cause this kind of drain, but it seems to be "normal" for a lot of users on this and other forums.
Sent from my Transformer TF101 using Tapatalk

Have to agree with most and say battery life is by far the best compared to all other Android phones I've owned. As for standby time, this is tested without a sim card, apps, etc. So 15 days sounds reasonable without touching it and without the phone doing anything in the background.

I disagree.
The battery life of this phone is fantastic, more than what I expected. It is better than the Nexus S that I have.
I am using extended battery 2000mAh for GSM version.
Battery drain during night is about 1%-2% for about 8 hours. No kidding, I was surprised with that this morning. Probably because the new 4.0.2. Before, it was half percent an hour.
My current record for battery life was 61 hours with 4 hours screen on time. See the attached screenshot.
Again, this is based on my usage pattern.
Sent from my Galaxy Nexus using xda premium

Battery life is amazing to me too, My average usage a day at work is 8-9 hours music, 45-60mins 3g web browsing, ~1h 40 mins screen on time.
On my Desire HD (Yea I know, hopeless battery life) the battery would die around 7-8 hours in with that usage. On my Galaxy Nexus I get home with 50% left.
One thing I found that helped battery life out a TON, is swiping facebook off the recent apps menu when you're done with it. Also have a similar high drain problem with joystiq/engadget apps.
Running AKOP17 with francokernel12 for anyone wondering.

I think you need to specify CDMA or GSM. It seems pretty common for GSM to get around 4 hours screen time before the battery goes. CDMA: 2.5 hours or so with moderate-heavy use.
I really hope someone on Verizon will post that they get 4 hours screen on time (no wifi) and what they did to get it.

Battery is good here too. Android OS is the eater. 4.0.3 and a good kernel fixes that.
The phone is capable of good battery but the new OS is still buggy.
LTE EX Galaxy Nexus - AOSP KANG
Asus Transformer - 3.2.1 OC/UV

Franco Kernel with a core powered down on screen offm 325 / 1200 clock.
Exiting / logging off google talk
Entering camera and force closing it one time after each reboot
LTE off
Nets me 1% drain per hour on 3g with nothing going on. That is excellent battery life. Loging out of Gtalk netted me approximately 2% an hour and the camera close trick netted me a crap ton. Prior to that I was getting almost 8% per hour loss doing nothing.

New GN owner feedback.

Hello all,
First off thanks to everyone in the community for all of the great articles and information. I struggled with which device to get but settled on the GN. When it arrived I kind of paniced because it wouldn't update from 4.0.1. Thanks to all of you I ended up finding out that I received a YAKJUDV version. With a little research I found out how to change to YAKJU and now all is well.
Not only is "all well" but "all is great"! I am running straight stock 4.0.4, no root, no custom kernel, nada. I do not have any issues with wake from sleep as some have reported, and my battery life is fantastic. As of right now I am on 1 Day 16 Hours and I still have 36% battery remaining. I know that battery life is very subjective but I have browsed some websites, downloaded 10-15 apps. Played a little angry birds. Connected to my job's Cisco VPN and did some RDP work. I have 3 Gmail accounts set to push with calendar & contact sync. I have had Wifi and Bluetooth enabled the whole time. I also have my google voice and google plus account active. I keep the screen on auto brightness. Lastly, I have about an hour or so of talk time during this period. Ohh, I forgot I also have had the Jawbone Companion app installed and connected to my Era, I read a few comments on some sites where users reported the app caused noticeable battery drain, this was not my experience.
In closing, thanks again for all of the info!

Greate battery life
nice....

that sounds like incredible battery life. what was the screen on time? i take it on WiFi the entire time?
either way, its refreshing to hear/see a thread praising this phone.. i am in the same boat as you, i am completely happy with my nexus...absolutely love it. however i had to root/ROM to get to this point but still very happy (i was going to root/ROM anyway)

For me crap battery life at 4.0.1 (and probably battery wasn't calibrated). Once updated to yakju 4.0.4 battery life was much much better. Other than the "screen at low brightness look crap issue" and not too loud speaker (Nokia phones which I came from was DAMN loud), overall very happy with this phone. The ROMs and kernels for most of the cases JUST WORK. And the fact people ask me what phone am I holding is an epic thing when you see people around you having iPhones and S2. May send mine in for a replacement as the top part of the screen has this weird greenish colour. Noticeable when keyboard is in landscape.

the screen on time is 4hrs 2min.

sfagundes said:
the screen on time is 4hrs 2min.
Click to expand...
Click to collapse
Want to swap phones?

sfagundes said:
the screen on time is 4hrs 2min.
Click to expand...
Click to collapse
holy ****...how did you get a 1 day and 16 hours with a 4 hours 2 min.......
im getting the 4 hours screen time but with a day (24 hours)........

lol i wish i could tell you.......
I am not running any widgets, most of my browsing was done over wifi.
I ordered a GNex about 2 weeks ago and used it for about 36 hours and returned it. That one had abysmal battery life. In hind sight, I wish I would have looked closer at the firmware/version type with that one so I would have some sort of reference.
I am kind of pissed that I ordered the extended battery thinking my battery life was going to be ****. I honestly dont think i need it.

sfagundes said:
lol i wish i could tell you.......
I am not running any widgets, most of my browsing was done over wifi.
I ordered a GNex about 2 weeks ago and used it for about 36 hours and returned it. That one had abysmal battery life. In hind sight, I wish I would have looked closer at the firmware/version type with that one so I would have some sort of reference.
I am kind of pissed that I ordered the extended battery thinking my battery life was going to be ****. I honestly dont think i need it.
Click to expand...
Click to collapse
When you use the charger does a green light come up to tell you that the battery is charging?
My Nexus One shows a green light, not my Galaxy Nexus.

gunner1937 said:
When you use the charger does a green light come up to tell you that the battery is charging?
My Nexus One shows a green light, not my Galaxy Nexus.
Click to expand...
Click to collapse
LOL, i don't know! I am still trying to drain the battery for the first time, I dont want to plug it in yet!
I'll check next time i charge it.

did you put it in the charger for short periods of time? if it doesn't get a full charge at once it doesn't reset the timer. you can tell when you are looking at the battery option and the map goes down back up then down again lol... I'm honestly thinking that's the case
Sent from my Galaxy Nexus using xda premium

Battery...hmm not bad

So I 've been wanting to really test how long my battery could go with minimal use.
This included...
about 45 minutes of 3G tethering
and about 13 hours on 3G. 4G was disabled the whole entire time
As you can see it was idle a lot, but I almost got 2 full days on stock battery. So no complaints.
Part of me feels like if it was not for that 3G tethering maybe I could have got 4 more hours+

Not bad indeed.

Would rather use my phone and have to charge when I get home then leave it in my pocket all day.
Also your wifi was toggled on the whole time... that would have saved some battery.
Sent From My Sprint Galaxy Nexus

my gnexus can only last 1hr and 50mins of screen time and i have to charge it ~2 or ~3 times per day.

zeke1988 said:
my gnexus can only last 1hr and 50mins of screen time and i have to charge it ~2 or ~3 times per day.
Click to expand...
Click to collapse
That sounds pretty dire....are you running at full brightness with Wifi and bluetooth and the GPS on (happens e.g. if you enable GPS for apps and then open Facebook) and no screen timeout while running the camera?
I've had an hour of screen time, and about 9 hours of screen off; I've not had it on to charge at all today, and I'm at 60% battery.
If you go into settings/battery, what else is keeping your phone awake? In other threads, people suggest installing 'Better Battery Stats' (nb, cheap, not free) and posting screen shots of the kernel/partial wakelocks. I can't interpret them myself, but others can...

zeke1988 said:
my gnexus can only last 1hr and 50mins of screen time and i have to charge it ~2 or ~3 times per day.
Click to expand...
Click to collapse
How is the signal strength where you spend most of your time?
When I'm at home, it's crap, and I'm about in the same boat as you.

You can get the better battery stats for free if you can locate the guys thread here on xda. But I recommend at least donating to him for such a useful app.
Sent from my Galaxy Nexus using xda premium

The only complaint I have with this phone is the massive difference between hspa and lte versions in battery life. Other than the razr maxx no late phone has acceptable battery life including the nexus. To get 5-6.5 hours screen time on my nexus versus friends 2.5-3 on an lte version is just crummy. I know some people just have extra batteries but that short of usable battery life is just too much of a hassle for me when I'm out and about. I would be forced to get a huge ugly seidio battery if I needed to move to Verizon. Even with 4g disabled the Verizon/sprint versions don't get the screen time I get with my hspa nexus. I really hope lte radios get more efficient and battery tech gets better. Removable or not, all phones can be made as sleek with a huge battery if manufacturers wanted. The maxx is proof of that.
Sent from my Galaxy Nexus using xda premium

I am giving my machine a hard time every day. Usually it ****s up after something like 4 hours. That is much better than the old machine I had. However, it is not good enough cause I work for 8 hours. So after the midday break in the canteen there is no more angry birds for me. I think of getting a second machine, one for the morning and one for the afternoon.

Yay, another super 1337 battery thread.
Check out my super 1337 battery savings with a stock battery!!!
/Facepalm.

I'm lucky to break 2 hours screen time on my GSM phone before I have to recharge. How the hell you guys managing such spectacular battery life?

CoronaDelux said:
I'm lucky to break 2 hours screen time on my GSM phone before I have to recharge. How the hell you guys managing such spectacular battery life?
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Click to collapse
what's your signal strength during that time? At work I get horrible reception, and leave work probably around their percent. Weekend I could away without charging
Sent from my Galaxy Nexus using Tapatalk 2

CoronaDelux said:
I'm lucky to break 2 hours screen time on my GSM phone before I have to recharge. How the hell you guys managing such spectacular battery life?
Click to expand...
Click to collapse
Lol, how's this for on screen time on a stock battery? I just managed to get the screens before I had to charge it up, It's the longest I've gotten with my ROM and kernel combo. Last screen shows it's the ~1800 mAh battery, the third line down reads 35/1750 mAh.
*Edit* Hold the phone, 1400 mAh is stock, right? My 'stock' battery is 1750mAh... How does that work?

Sent From My Sprint Galaxy Nexus

ÜBER™ said:
Sent From My Sprint Galaxy Nexus
Click to expand...
Click to collapse
How did you manage that?

I Am Marino said:
How did you manage that?
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Click to collapse
Wifi and conservative use... well kind of I probably could have gone long... but couldn't stop using the phone.
Sent From My Sprint Galaxy Nexus

Is everyone else getting strange battery drops? When the battery is at 19%, it drops directly to 15%, without going through 18,17,16. Is this happening to you or is my battery screwed up? It's been doing it for weeks now so I don't think it's about lack of battery training

This is with a genuine 2000mah extended battery, minimal use over a long weekend. This is also with emails, facebook etc all polling at 30 min intervals, wifi on but not always connected and screen on auto brightness. I had also conditioned the battery by fully charging and discharging about 5 times when the battery was new.

Duncs said:
This is with a genuine 2000mah extended battery, minimal use over a long weekend. This is also with emails, facebook etc all polling at 30 min intervals, wifi on but not always connected and screen on auto brightness. I had also conditioned the battery by fully charging and discharging about 5 times when the battery was new.
Click to expand...
Click to collapse
Screen on time?

bgdxv said:
Screen on time?
Click to expand...
Click to collapse
Looks like 35mins...
Sent from my Galaxy Nexus using xda premium

[Q] Charging time

How long you guys charge Tab S until fully charged? is it normal if my tab S fully charged only 1hour and half.. It suprises me cause Ive never have tab that can charged this fast. Im afraid my Tab have battery problem.

ayenzel said:
How long you guys charge Tab S until fully charged? is it normal if my tab S fully charged only 1hour and half.. It suprises me cause Ive never have tab that can charged this fast. Im afraid my Tab have battery problem.
Click to expand...
Click to collapse
My 8.4 takes about 2.5 to 3 hours on average using the stock travel charger. The 10.5 longer because of the larger battery.
Sent from my SM-G900F using Tapatalk

I just bought the device today, is it normal for the first time use the battery drain really fast, in just a minute 1% will drop.. Overall. only can use for 2 hours with data on.

ayenzel said:
I just bought the device today, is it normal for the first time use the battery drain really fast, in just a minute 1% will drop.. Overall. only can use for 2 hours with data on.
Click to expand...
Click to collapse
Batteries of this type usually take about a week to reach optimal condition.
Sent from my SM-G900F using Tapatalk

simacca said:
Batteries of this type usually take about a week to reach optimal condition.
Sent from my SM-G900F using Tapatalk
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Click to collapse
really ????? oh god now i can rest in peace :good: i had bought the tab 10.5 yesterday and it drained so much battery :crying:

simacca said:
Batteries of this type usually take about a week to reach optimal condition.
Sent from my SM-G900F using Tapatalk
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Click to collapse
i noticed this on my tab 8.4LTE too, the battery simply drains away, almost close to rendering the tablet useless as I use this as my primary phone. tried playing online games and 30 mins later, it ate 40% of the battery (no unusual warm ups) i had this tab for almost a week now and it's still the same. i'm getting worried that i have battery issues

ThE_SoUrCe said:
i noticed this on my tab 8.4LTE too, the battery simply drains away, almost close to rendering the tablet useless as I use this as my primary phone. tried playing online games and 30 mins later, it ate 40% of the battery (no unusual warm ups) i had this tab for almost a week now and it's still the same. i'm getting worried that i have battery issues
Click to expand...
Click to collapse
same as me. I also use the LTE ver. It drains really quick which makes me feel like buying a cheap tablet. It only can stand for 2hours plus for heavy user. The screen is really beautiful but have to lower the brightness to save battery. such a waste.

ayenzel said:
same as me. I also use the LTE ver. It drains really quick which makes me feel like buying a cheap tablet. It only can stand for 2hours plus for heavy user. The screen is really beautiful but have to lower the brightness to save battery. such a waste.
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Click to collapse
I have a friend here with a tab similar to ours but his battery life is superb. 5% drain /30mins on wifi. Mine dropped 3% asI type this lol. Could it be because we rooted our device?

ThE_SoUrCe said:
I have a friend here with a tab similar to ours but his battery life is superb. 5% drain /30mins on wifi. Mine dropped 3% asI type this lol. Could it be because we rooted our device?
Click to expand...
Click to collapse
I dont think its because of root, cause I didn't root my tab yet. does ur friend have lte version also? I also trying to use my tab only with wifi on and sim on (data off) still the same result.

ThE_SoUrCe said:
i noticed this on my tab 8.4LTE too, the battery simply drains away, almost close to rendering the tablet useless as I use this as my primary phone. tried playing online games and 30 mins later, it ate 40% of the battery (no unusual warm ups) i had this tab for almost a week now and it's still the same. i'm getting worried that i have battery issues
Click to expand...
Click to collapse
I was getting worried as well. Every time I've used it for anything other than movies my battery percentage has dropped like an aerodynamic rock. Browsing, games, magazines, etc. Movies (assuming because of the typically large amount of black pixels) look fantastic and the battery does quite with them, but for everyday consumption it left me concerned.
An hour ago I asked Amazon for an exchange which they did no questions asked. Perhaps round 2 will fare better. If not, I'll shed a tear as I give up this amazing display for another device altogether.

ayenzel said:
I dont think its because of root, cause I didn't root my tab yet. does ur friend have lte version also? I also trying to use my tab only with wifi on and sim on (data off) still the same result.
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Yes. Lte version as well. I noticed that when he do wifi file transfers and other stuffs. Batt will drain as well.
I want a heads on comparison with his tab but it's hard since we use the tab differently. This is my primary phone while his is for browsing only. Tomorrow. I'll try to transfer s huge file via wifi and see if we'll have the similar percentage of battery drain. I already did the calibration as advised from another thread and it seems to work. A few more charge cycle might do the trick.

ayenzel said:
same as me. I also use the LTE ver. It drains really quick which makes me feel like buying a cheap tablet. It only can stand for 2hours plus for heavy user. The screen is really beautiful but have to lower the brightness to save battery. such a waste.
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I use my screen on about a quarter of the slider during normal operations is plenty bright! Only need automatic when i am watching a movie

ayenzel said:
How long you guys charge Tab S until fully charged? is it normal if my tab S fully charged only 1hour and half.. It suprises me cause Ive never have tab that can charged this fast. Im afraid my Tab have battery problem.
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My tab takes around 12 hours to be fully charged from ard 5%.
Is this normal?
Maybe I have a battery problem too.

jueeem said:
My tab takes around 12 hours to be fully charged from ard 5%.
Is this normal?
Maybe I have a battery problem too.
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Same for me.... It takes forever to fully charge it (10,5 in)

I use a 10.5 LTE and it takes about 5 hours to fully charge. I recommend to switch it off while charging because when it's on you loose about 500mAh (also if the screen is off) and with a 2Ah charger if the battery sees (optimistically) 1.5Ah it takes 5h 20' plus the time required by the slow charge when it reaches 85-90%, so more than 6h.
Anyway I charge it every time I can when it goes under 50%, it's a big battery and needs a special care. Nothing to say about batterylife, excellent.

Most tablets/phones fast charge to 80% and then slow down for the last 20% , so if you don't need a full charge just grab it after it goes past 80% , your battery will live longer as well, as the closer you charge to 100% the more damage is done to your battery, it`s very small but it adds up.
Have a read of the link below, if you want to make the battery in your tablet live longer, if you have the money to easily replace it then don't worry, charge away
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
John.