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battery life of Gt-p3100..is it normal ?

hello
i have NEW Galaxy tab 2 p3100 from about two weeks ago ..i want to ask about battery life
the battery work on half screen brightness with always wifi on with browsing internet ..the battery last about whole 8 hours ..
when i play big games the battery last whole 6 hours until be 5%
when i watch movies the battery stay whole 9 hours ..
is that normal for this tablet or should be more ??
because i hear that should battery last more than that ??

No thats perfect.. Im using GT-P3100 too and my battery life last for 6hours max *screen on*

today i give another try and the result is : with screen half brightness and browsing internet WIFI Constantly the battery last just 5 hours and 30 minutes !!!!
that really frustrating !!!
what you say about that ?!!

Btw with a custom rom like CM 10.1 your battery will least for a long time than the stock one..
Envoyé depuis mon GT-P3100 avec Tapatalk

TAHASMOBILE said:
hello
i have NEW Galaxy tab 2 p3100 from about two weeks ago ..i want to ask about battery life
the battery work on half screen brightness with always wifi on with browsing internet ..the battery last about whole 8 hours ..
when i play big games the battery last whole 6 hours until be 5%
when i watch movies the battery stay whole 9 hours ..
is that normal for this tablet or should be more ??
because i hear that should battery last more than that ??
Click to expand...
Click to collapse
Screen will always use the most battery, sounds normal. I know it sounds weird that it lasts longer browsing than with games, but remember: it is still a computer. When playing games, the CPU and GPU will often be at their max clocks! I found that this burns battery very fast. You can certainly underclock it for longer batt life, and this is often recommended anyways since it lowers heat and puts slightly less wear on the CPU.
I noticed that when I'm browsing, typing, wifi, facebook, photos, ect. that the CPU hardly goes above 600mhz! Good! Also remember that the tab2 has a dedicated GPU, so movies will use the GPU and actually use very little CPU (the battery killer). Watching a movie, the GPU is simply decoding a file and displaying an output... requires very little CPU. Playing a game though, requires the GPU and CPU to constantly decode and recode multiple files and display outputs, while processing inputs, and performing advanced math calculations.
You can compare this to another (older) device without a graphics processor, and you'll see that the CPU will be maxed out during a movie on those devices!
Use an app like SetCPU or No Frills CPU from the app store to underclock as you wish.
---------- Post added at 10:54 AM ---------- Previous post was at 10:46 AM ----------
Oh, congrats on getting a great device! It has probably the best battery in the industry, at a whopping 4000 mah (milli amp hours). You'll notice most phones have about 1500 mah and tablets ranging anywhere in the 1700 to 3000 mah range. This is almost getting close to the 6000+ in laptop batteries lol! You cannot even find an extended battery for it. You could, if you're on the go alot, get one of those portable rechargable usb battery backups to plug into while you're out. It would fit in your pocket or backpack, but I think it wouldn't be worth it.

TAHASMOBILE said:
hello
i have NEW Galaxy tab 2 p3100 from about two weeks ago ..i want to ask about battery life
the battery work on half screen brightness with always wifi on with browsing internet ..the battery last about whole 8 hours ..
when i play big games the battery last whole 6 hours until be 5%
when i watch movies the battery stay whole 9 hours ..
is that normal for this tablet or should be more ??
because i hear that should battery last more than that ??
Click to expand...
Click to collapse
just turn on the power saver budy.. i charged my tab 2 till 99%. and then i turned on power saving.. it lasted for 22 hours .. i played temple run 2 for 1 hour 30 mins and also watched a movie (i guess ) .. but then i had college on that day .. so it wud be on standby for 2 hours from that 22 hours..
Dont find any prob so far..

i calculate it that every two hours of work with 50 % screen brightness the battery consume 30 % of battery life ! with ( 1 hour wifi on + 30 minutes play video + 30 play shadowgun game ) !
note : power save button is on
what do think ? is that normal or should be more ?

Please keep in mind, there are various factors that ultimately decide the battery life...its not easy to define a users habit/trend...different games use different level of CPU power, different video formats/resolution may also contribute; MP4 vs MKV/720 vs 1080...different operational temperature...application installed...application running in the background...update interval for email/news/weather etc...
I would typically say at least 5 hours of usage on the battery size of the Tab2 7.0 is to be expected...Ive clocked over 9 hours on video watching and as little as 6 hours when playing games among other activities...but I think 5 hours is reasonable...
---------- Post added at 02:00 AM ---------- Previous post was at 01:56 AM ----------
TAHASMOBILE said:
i calculate it that every two hours of work with 50 % screen brightness the battery consume 30 % of battery life ! with ( 1 hour wifi on + 30 minutes play video + 30 play shadowgun game ) !
note : power save button is on
what do think ? is that normal or should be more ?
Click to expand...
Click to collapse
Shadowgun is a relatively graphics intensive game...powersave might be on, but not active when engaged in high demanding tasks such as gaming...powersave is only more significant when device is idle, such as lower screen brightness, reduced or disabled email/news/weather etc updates...otherwise powersave isnt actually doing much while you are playing games...30% consumption = 2 hours...60% consumption = 4 hours...90% consumption = 6 hours + 10% remaining...sounds about right when you do the maths...looks about right!

[Q] Battery life not so impressive...

I find my Z3's battery life not that impressive as critically acclaimed. A lot of people have posted their battery estimated time to be two days or more but for me, even after cycling the battery from 100% to 1% twice I still only get 1 day and a couple of hours more. For sure I can make it through one day with probably a lot left but I'm sure not a heavy user. Dumb ways to die 2, crossy road and wordament are the only games I play and they aren't even that big of games. I don't play them much either, maximum of 2 hours combined in a day. It says the screen takes up most of the battery consumption a but I usually just leave it on WhatsApp and do nothing. HOW??? AND WHY???

All About That Sony said:
I find my Z3's battery life not that impressive as critically acclaimed. A lot of people have posted their battery estimated time to be two days or more but for me, even after cycling the battery from 100% to 1% twice I still only get 1 day and a couple of hours more. For sure I can make it through one day with probably a lot left but I'm sure not a heavy user. Dumb ways to die 2, crossy road and wordament are the only games I play and they aren't even that big of games. I don't play them much either, maximum of 2 hours combined in a day. It says the screen takes up most of the battery consumption a but I usually just leave it on WhatsApp and do nothing. HOW??? AND WHY???
Click to expand...
Click to collapse
Do you really care about some dumb estimations? What is wrong with you all?! My Z3 works for ~2.5 days with like 2 h+ a day of PowerAmp at max volume , dropping to ~30 %... WiFi off (also not available for location, check that in wifi settings), location on precise settings (no wifi obviously), screen time 1-2 h. Projection is just a projection, why would you care? It just takes the average load, so if you turn it on after an hour of playing a game it will show a lower value...

exactly... want it to live a little longer? use the stamina mode.. (helps with screen off and some screen on battery life depending on how u configure stamina mode..)
all in all a very nice phone with a good battery capacity..
im starting to think 3000mAh should be the minimum/standard in every smartphone that comes after the Z3... u can seriously feel the difference compared to older phones with less battery capacity..
u need to learn how to use the phone without keeping an eye on the battery percentage.. im starting to get shocked when i hit 70-60% by the time im off to bed..
yes at days i get down to less than 10% but without keeping an eye on the battery percentage its living longer...
stamina mode on 24/7 , 3g/4g on 24/7 (no wifi) , auto sync on, whatsapp,instagram, twitter and 2 bbms sucking my battery but nothing this beast cant handle
by the end of the day im at whatever percent ... and sot between 2-7 hours ..
(not bragging but i guess i wont need bbs/amplify/greenify/bmw... with how the stock rom is working)

Well gaming will ramp up the CPU clocks/voltage so lower SOT would be expected.

abhinav.tella said:
Well gaming will ramp up the CPU clocks/voltage so lower SOT would be expected.
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Click to collapse
Not sure why he doesn't realize this.... Screen on for 2 hours playing a game is going to use your battery.

I'm having the same issue as OP. Been through around 5 charge cycles so far. I don't play any games at all. Main usage is for WhatsApp, Twitter, Facebook, a bit of camera use and general web browsing. It's usually an even split between being on WiFi and 3G through the day.
I've had the phone for a week and my battery usually lasts around 28 hours (30 max) with around 4 hours of SOT, (with stamina enabled from 50% down) which I'm kinda disappointed by, given how everyone I see on forums posts great stats of 7-8 hours SOT. (Beats the crap out of what my old Nexus 5 was giving me, but still - bought the phone because I didn't want to think about my battery anymore)
Don't know if I just have a defective battery or I'm doing something wrong, but does anyone have any tips, or anything in particular that you do to ensure your battery lasts two days?
I read that the Facebook app is a bit of a hog, but I don't see any flags under the battery usage page, or any warnings in the section that monitors which apps are power hungry. Going to uninstall it and see if it makes a difference. That apart, my screen brightness is usually set at around 35% (with adaptive brightness on) Any other suggestions would be very welcome
Thanks!

Post your Battery life here

Lets see that monster

As i posted on my first impressions:
Here we are, my first full battery cycle . I'm sure you will get better SOT than me, my gps usage was about 3h , spotify , bluetooth , android wear, high brightness , apps updates , downloads etc.. and this is what i got.
I notice you can get better results, why? Well, with my one plus one and my usage i got 4h of SOT, and most people could get easily 6h , with my SG6 edge i get around 3h SOT and most people got 4h / 4.30h , those are my daily results, with my normal usage statistics , if i wanted i could make it better, way better.. but thats not the case.

That's an impressive result. 5 hour SoT on 5.5' is great nevertheless and you claim that the phone was under heavy usage.
I need to ask though; have you done any Greenify/Powernap/Amplify? I would guess no as I doubt you are even rooted but your wakelock status seems impressive; almost nothing while the screen was off. That means the software optimization is really good.
BTW, X Play does not come with a Turbo charger, right? How long does it last to fully charge with its own charger?

Maybe after 4-5 days of usage, you may start getting better SOT? I thought it could easily touch 6-7 hours, nevertheless this is great.

my first cicle
telegram drains so much i just unistall it

Lumia 525, 1,5 days. Chear!

Android Pcmark battery test
Motorola Moto X (2014) - 5:35
Asus Zenfone 2 - 6:55
Motorola Moto Maxx - 8:37
Motorola Moto X Play - 9:20
Source: tecmundo.com.br

General battery info:
Detailed battery info:
Screen on time:
Not sure how I feel about this coming from the Z3c. Battery life for me is about the same TBH, but when you consider the difference in screen size and resolution, I can't really complain.

Wow, I expected much more. I get 6 hours of sot on my Moto E 2015 almost every day.

thunderrodriguez said:
Not sure how I feel about this coming from the Z3c. Battery life for me is about the same TBH, but when you consider the difference in screen size and resolution, I can't really complain.
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Is that 100% WiFi connected? Or LTE with WiFi on, but not connected

tersagun said:
That's an impressive result. 5 hour SoT on 5.5' is great nevertheless and you claim that the phone was under heavy usage.
I need to ask though; have you done any Greenify/Powernap/Amplify? I would guess no as I doubt you are even rooted but your wakelock status seems impressive; almost nothing while the screen was off. That means the software optimization is really good.
BTW, X Play does not come with a Turbo charger, right? How long does it last to fully charge with its own charger?
Click to expand...
Click to collapse
It really is impressive, consider i'm using with almost full bright . No settings for battery saving, no greenify nothing, just my usually apps . It comes with turbo charger , and it charges fast on it, but when using with a car charger or a power bank , it take forever to charge.

90% wifi/10% 4g
automatic brightness
30min calls
location disabled when i stay in house
i believe with mixed use, we can get 7.30 hours

Sent from my XT1562 using Tapatalk

paorpas said:
90% wifi/10% 4g
automatic brightness
30min calls
location disabled when i stay in house
i believe with mixed use, we can get 7.30 hours
Click to expand...
Click to collapse
Damn, not bad.

Well for me.. this was perfect since I was always charging my phone (HTC M8) and I hated the camera in general so this is a huge upgrade. I think I charged it once for like an hour or so because it had went down to 34% and I wanted to keep it anywhere between 40-80%. I haven't had to use it for too much- I generally just use it to browse FB, Instagram (haven't installed yet- only on the chrome ver), messenger and now have a launcher. Still pretty good because it lasted 2 days (34% when I wanted to charge it) easily and also said it had more than a day left of charge.

I don't have my batter screen short but My phone's batter was superb & it almost used to run for one day.

I did well yesterday

First day - on wifi webrowsing with crome, facebook, youtube + 2 hour mx player - I1m satisfied with this

First full cycle, everything turned on 100% of time (wifi, 4g, gps, location). Also, brightness level set around 70% with adaptive brightness turned on.
I noticed some wakelocks and Goggle Play services sometimes runs in background without reason.

12

Battery Life & SOT

Been getting about 14 to 16 hrs of battery life and about 4 hrs of SOT for the week. Main usage is web surfing, emails, whatsapp, YouTube and music streaming, no gaming.
Two days ago, I enabled the boost+ app and optimize most apps that don't need to run at full resolution. The screen on time seems to have improved a lot. Got 5hr 56mins of SOT with 14hr 46mins battery life.
This is much better than my HTC 10 after the nougat update. SOT approx 4hrs. I have boost+ running too.
Will monitor for a few more days to see if it is a one off performance.

RSK01 said:
Been getting about 14 to 16 hrs of battery life and about 4 hrs of SOT for the week. Main usage is web surfing, emails, whatsapp, YouTube and music streaming, no gaming.
Two days ago, I enabled the boost+ app and optimize most apps that don't need to run at full resolution. The screen on time seems to have improved a lot. Got 5hr 56mins of SOT with 14hr 46mins batteries life.
This is much better than my HTC 10 after the nougat update. SOT approx 4hrs. I have boost+ running too.
Will monitor for a few more days to see if it is a one off performance.
Click to expand...
Click to collapse
Pretty good life!! mine gets about 3.5 hrs SOT, and about 13 hour standby, I also have boost+ on too. Curious as to what your brightness setting is, mine about 50% with adaptive on. I am rather heavier on my battery and network, so it doesnt surprise me that you're getting better life. (mine was better when I was on holiday with a better network connection).

About 45% level with adaptive on too. I think setting boost+ to run almost every app at HD resolution, excluding photo apps, helps a lot.
Good network is key too.

I am very satisfied with battery life when on WiFi 4,5-5 hours SOT), but when on LTE I get around 3 hours of SOT. I just enabled Boost+ to see if it improves battery life at all. I don't want to enable though FullHD for apps.
Do you use location services in high accuracy mode?

Here is mine, Charged up to 96% used until now.

Battery had become a bit crazy lately after updates to tons of apps. Just updated the firmware yesterday. Will monitor again.

Hi guys, hope everyone is doing good.
I wanted to ask that from past 2-3 days I'm facing very quick battery drain on u ultra. I'm hardly getting 2.5 hrs of Sot. Phone is heating too much.
Before this I was seeing around 4 hrs+ SOT that too with 1hr+ of casual gaming. I don't know what is wrong but I'm worried. My device is heating that's all what I'm able to notice. Any suggestions are most welcome. Except this, love the device.
Thank you.

It happened to me after updates of some apps.
The only way I solved it was to shutdown the phone completely. Wait for about a minute before powering up again.

Thinking about getting the U Ultra. Do you feel that the battery life is good enough?

flipp0 said:
Thinking about getting the U Ultra. Do you feel that the battery life is good enough?
Click to expand...
Click to collapse
Actually depends on what your daily usage looks like. If I'm on holiday or the whole day at home, one charge easily lasts for 2-3 days. But at university with every sync /bt/WiFi etc enabled and 50% brightness I get about 8h with high amount of screen on time (50-80%)

ChavezD said:
Actually depends on what your daily usage looks like. If I'm on holiday or the whole day at home, one charge easily lasts for 2-3 days. But at university with every sync /bt/WiFi etc enabled and 50% brightness I get about 8h with high amount of screen on time (50-80%)
Click to expand...
Click to collapse
I usually use the phone for 2-4 hours per day but more hours during travel.
How much does the battery drain during standby? For instance, I you leave the phone in standby during the night, how many percent does the battery decrease?

Mine loses about 4% overnight (8 hours) which I think is exceptionally good!

For me it highly depends on which ROM and which apps I have installed. Recently the battery drain was about 1%/hour (150 apps, all syncing etc on), but right now after cleaning up a bit and nstalling greenify I'm back at ~3-6% per night.

I can get the black U Ultra for €291.99 here: https://www.eglobalcentral.eu/htc-u-ultra-64gb-4g-dual-sim-sim-free-unlocked-black.html
Tested the phone yesterday at a local shop here in Sweden, felt great in the hand and I really like the design. However, the battery life may be a deal breaker. Most of the phones I have used during the last 2 years has droppped 1-3 percent during night and I usually got 6 hours SOT over 24 hours. The last phone I used with weak battery life was Nexus 6, it gave med 3-4 hours SOT during 24h and that was slightly annoying. I get the impression that U Ultra is comparable to Nexus 6 in the battery department. :-/

That's actually a very accurate comparison. I replaced my Nexus 6 with the HTC Ultra and I'm getting almost identical SOT and battery life.

Julian1961 said:
That's actually a very accurate comparison. I replaced my Nexus 6 with the HTC Ultra and I'm getting almost identical SOT and battery life.
Click to expand...
Click to collapse
how much do you get bro ? and what is your usage ?

tornido067 said:
how much do you get bro ? and what is your usage ?
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Click to collapse
I get about 24 hours of mixed usage, which means I need to charge it up every morning, but I never seem to be able to get more that 4 hours SOT. Also, the rapid charger is slower than the Nexus 6. It takes about 1 hour and 50 minutes for a full charge.

I installed and configured kernel Adiutor/CPU Kernel state #on_demand and turned off #core_4. Now my battery/system working 2 whole days before charging!

Guys if i go to optimize apps and turn it on, Wen I leave it turns off again. Is this normal? I restart the phone and I already did a factory reset because the phone was updated alot the first time I use it, but it's the same. I'm getting about 3-4 hours off sot depending on the use. Maybe less. What do you guys think?

i got 5hrs and a few mins with the first charge (light use, browsing, installing apps, tweakin settings and 35mins spotify)

Not impressed by battery timings

I'm the guy who gets every flagship as soon as they hit the market. I've been using Huawei mate 9 before and it had very impressive battery timings but it's been like 4 days since I got my s8 plus and not impressed by battery at all, it's hardly giving my 4 hours sot. I've read different threads people claiming to get 6 hours easily. I'm using it on fhd, with no extra bloatware and it's exynos variant. It also drains a lot of battery on standby like easily 15% or more overnight.

sherrypizza said:
I'm the guy who gets every flagship as soon as they hit the market. I've been using Huawei mate 9 before and it had very impressive battery timings but it's been like 4 days since I got my s8 plus and not impressed by battery at all, it's hardly giving my 4 hours sot. I've read different threads people claiming to get 6 hours easily. I'm using it on fhd, with no extra bloatware and it's exynos variant. It also drains a lot of battery on standby like easily 15% or more overnight.
Click to expand...
Click to collapse
Lol bro I get 5-6 hours sot everyday with heavy usage and high brightness with WQHD

Me too. 6hrs + of SOT.
At 85% im already at an hr of sot. After that between 10-15 is another hr of sot. At 50% im near or at 4hrs of SOT.
Honestly, i think that FB app is killing ur battery. I disabled that crap n if have to use FB ill use the browser.

Darth-Kadd said:
Lol bro I get 5-6 hours sot everyday with heavy usage and high brightness with WQHD
Click to expand...
Click to collapse
That's exactly what I said, people are easily getting 6 hours SOT and I'm not even on QHD.

Well I thought exynos was better then our ****ty snapdragons?....just kidding...but yeah man I'm getting 6 hours easy but I can always squeeze 7 to 8 hours on screen time....my last one was 7 hours on screen time with 1 day 14 hours plus all together....i posted my recent cycle in post your battery stats thread just for proof....and I have the highest graphic setting....i don't know man I'm rocking dark theme also to help battery as intended

did u restore any app? OR use Smart Switch? Best guess is do a factory reset if there is some bad app syncing continuously.

varun.gid said:
did u restore any app? OR use Smart Switch? Best guess is do a factory reset if there is some bad app syncing continuously.
Click to expand...
Click to collapse
Yep that's what I'm thinking to do, Factory reset if the problem persists.

7hrs min Sot I get and that's with 14% battery left I think I edged to 8hr 20m but forgot to screen shot. I use qhd and brightness is pretty high too. Nothing disabled at all. Maybe try a reset and use the qhd res

I installed mine (Exynos) from scratch, only putting back on the apps I need which is not many.
I have location off unless I need it, and sometimes switch to 2G as I get better signal on that. FHD+.
With Wifi on 100% of the time, 75% brightness and all the usual suspects like Facebook, Instagram, Whatsapp and Gmail (not snapchat), I get over 8 hours screen on time. It goes around 7.5 hours if i'm using streaming services like Netflix a lot though.
That's over 2 days as well. By bedtime on the second day, I am below 10% and need to charge.

I use "Greenify" App! Now i have 5 % drain per night

You simply cannot compare like that. "He gets 5 hours SOT so why can't I".
So many variables - signal strength, wifi, bluetooth, brightness level, auto brightness, GPS, NFC, location settings, vibration settings, how long since last charge, account sync, apps installed, apps used. They all affect battery life.
So really, as long as you're getting through a full day, it shouldn't really matter what other people get.
sherrypizza said:
Yep that's what I'm thinking to do, Factory reset if the problem persists.
Click to expand...
Click to collapse
What problem? 4 hours SOT with the stats you posted in the OP isn't a problem.

Cellular signal is a biggie when it comes to battery life. My previous house was around 3 miles from where my current house is and the cellular was weaker and I got more battery drain in fact I remember switching to 3g from 4g to help increase battery and even 2g at times.

What brightness is your screen on? I'm easily getting 6 hours of screen on time, usually with 20-30% left after a full day (14-16 hours) of use, this is with many apps that would be considered battery drainers (Kik, Whatsapp, etc) installed. You definitely should try a factory reset, since most of battery problems this type originate from a problem that can be fixed with one

I'm certainly impressed. Auto sync on all day

I'm sure you are doing something wrong, because look at my total usage time and screen on time here.
The first picture in the attachment shows the total usage time where my Galaxy S8+ only was inactive for 2 out of those 19 hours. Yes, i was using it for 17 hours out of those 19 hours in total.
But that's not all. Take a look at the 2nd picture in the attachment where it shows my insane screen on time from those 19 hours of total usage.
And the average screen on time for me now is around 8 hours which is really good. And this is also with heavy usage.
All of this is with the highest resolution, brightness at 60-70%, Wi-Fi and Mobile Data on all the time and ofc with all kinds of apps syncing in the background.

Good thing you are within the return window, you can get a different phone that suits your needs.

Im getting 9hrs on screem time at 5% left. Fhd, good signal, wifi, data, gps, 60% brightness. A mix of calls, whats app, facebook, youtube, emails, taking photos etc. Id say heavy usage as its a new phone. But thats it, give it 6 months to a year that will probaly be 30% less efficent so around 6 hrs on screen time. Im happy atm. I always also happy the first year of owning the nexus 6p but after a year id only get about 3 hrs ost.

sherrypizza said:
Yep that's what I'm thinking to do, Factory reset if the problem persists.
Click to expand...
Click to collapse
I would suggest that is your best option as my battery life is superb. I recall owning some mobile a few years back that had rave reviews about battery life yet mine was awful. Problem wasn't the mobile but some apps I had downloaded. Factory reset etc and removed some apps and all was good. Its a pain when this happens. :highfive:
Ryland

Phew, the issue was resolved by resetting the phone and removing the second sim card since it's a dual sim variant. Now the SOT and overall performance is close to perfect. I don't know what caused it, maybe the second sim since I don't have any extra app installed besides Fbook, swiftkey or whatsapp. Thankyou all for your suggestions

HI i from India using the S8+ Exynos Variant i am also not getting the battery SOT more than 4 hours, what should i do ?