I have had my Transformer for about two weeks now, it is unlocked and rooted with the latest stock firmware. So far I am really impressed with this tablet in almost every way except for the standby battery life. I have tried several things including a tasker profile to switch on airplane mode & disable sync with the screen off and an aggressive juice defender profile but the best I can do is about 4-5% drain after 12 hours of standby. I have read several posts regarding battery & standby life and this seems to be pretty typical with what other users are experiencing. My question is why is this so poor?
I am coming from a 7" original kindle fire. On the stock rom that would drain only about 1% every 24 hours in standby. When ICS/Jellybean roms were first introduced that standby drain jumped to about 1% per hour. After several months/iterations the developer (Hashcode) was able to tweak something to get the drain back to something resembling stock (probably 2-3% per 24 hours). Any hope of something like that happening with the transformer?
Gsam battery monitor indicates that when in standby the Kernel (OS) is using the majority of the battery power. Anyone know/understand what it is actually doing? I would think that in airplane mode and deep sleep this thing should drain almost no power at all (system tuner pro indicates that it is deep sleeping just fine).
Sorry for the long post, I think I needed to just rant a bit. I realize that I could power the unit down when not in use, but IMO that takes away some of the convenience of a tablet vs a laptop, even though the boot time is less than a minute. Any thoughts?
I didn't read everything... but endure nothing is running in the background. For instance, Facebook will periodically get your location, download stuff, wake your device up. This greatly kills the battery during standby. I also recommend turning off WiFi when not using it. I lose about 2 percent throughout my 8 hour work day with WiFi on and screen turned off. There is most likely a rogue app preventing deep sleep.
Sent from my SGH-T999
"So I put my phone into airplane mode and threw it... worst transformer ever. -.-" -My friend
elesbb said:
I didn't read everything... but endure nothing is running in the background. For instance, Facebook will periodically get your location, download stuff, wake your device up. This greatly kills the battery during standby. I also recommend turning off WiFi when not using it. I lose about 2 percent throughout my 8 hour work day with WiFi on and screen turned off. There is most likely a rogue app preventing deep sleep.
Sent from my SGH-T999
"So I put my phone into airplane mode and threw it... worst transformer ever. -.-" -My friend
Click to expand...
Click to collapse
I appreciate the response, but unfortunately I have already looked for any rogue apps, turned off wifi, gps, and auto-sync, then placed in airplane mode. It looks like deep sleep is working fine from what I can see. In my opinion even 2% per 8 hours (6% per day) is too much. I would like to get it to 1-2% per 24 hours. Perhaps I am just too picky but it seems like if the kindle can do it the transformer should be able to.
collindv said:
I appreciate the response, but unfortunately I have already looked for any rogue apps, turned off wifi, gps, and auto-sync, then placed in airplane mode. It looks like deep sleep is working fine from what I can see. In my opinion even 2% per 8 hours (6% per day) is too much. I would like to get it to 1-2% per 24 hours. Perhaps I am just too picky but it seems like if the kindle can do it the transformer should be able to.
Click to expand...
Click to collapse
1 percent is impossible... nothing can do that without completely powering off. All of my android devices, in airplane mode, have about a 2-6 percent drain in standby. You're battery is going to drain. Battery's drain just by having something connected to it. Let alone an entire motherboard. Plus the kindle may have a higher capacity. I haven't looked at the specs but my step mom has the kindle fire and her battery life is horrible. And she barely uses it.
All in all. Weather or not GPS is on or off, or airplane mode, apps can still wake the device. Download betterbatterystats from the play store and see what's using battery. But 1 percent a day is impossible. Period.
Sent from my SGH-T999
"So I put my phone into airplane mode and threw it... worst transformer ever. -.-" -My friend
I'm having the same question, what exactly does it do when it's supposed to be sleeping?
Sent from my ASUS Transformer Pad TF300T
nooktablet said:
I'm having the same question, what exactly does it do when it's supposed to be sleeping?
Sent from my ASUS Transformer Pad TF300T
Click to expand...
Click to collapse
Setttings>Location> uncheck all three boxes. This is how I stopped the battery drain in my TF700 Good Luck
nooktablet said:
I'm having the same question, what exactly does it do when it's supposed to be sleeping?
Sent from my ASUS Transformer Pad TF300T
Click to expand...
Click to collapse
Well it will never be doing nothing. Thats impossible. There are always low level kernel/system things happening that require some CPU. Thats why i said a standby drain of 1 percent A DAY is impossible. But 1 percent per 6-8 hours is very possible with limiting background activities/service, turning off Bluetooth/WiFi/Locations and turning off Sync.
elesbb said:
Well it will never be doing nothing. Thats impossible. There are always low level kernel/system things happening that require some CPU. Thats why i said a standby drain of 1 percent A DAY is impossible. But 1 percent per 6-8 hours is very possible with limiting background activities/service, turning off Bluetooth/WiFi/Locations and turning off Sync.
Click to expand...
Click to collapse
OK, I would settle for 3% per day . I will keep trying a few things and update if I manage to lower it.
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
elesbb said:
Well it will never be doing nothing. Thats impossible. There are always low level kernel/system things happening that require some CPU. Thats why i said a standby drain of 1 percent A DAY is impossible. But 1 percent per 6-8 hours is very possible with limiting background activities/service, turning off Bluetooth/WiFi/Locations and turning off Sync.
Click to expand...
Click to collapse
the ipad 3 drain about 1% every 24 hours, i know it has bigger battery capacity, but i think it's just a bit more than double our tablet battery capacity, so shouldn't we have only 2 -3 % drain
and yeah i don't use any background syncing or notification, don't leave wifi on when sleep mode, .... the only thing i use is auto-sync but for gmail only, nothing else
does this mean ios has a better sleep mode, like it puts the device into some kind of "extreme" sleep?
and i would be very happy if this tf300 only drain 3% or less in sleep mode / 24 hours, i love this thing but always jealous when it comes to battery
Sent from my ASUS Transformer Pad TF300T
nooktablet said:
the ipad 3 drain about 1% every 24 hours, i know it has bigger battery capacity, but i think it's just a bit more than double our tablet battery capacity, so shouldn't we have only 2 -3 % drain
and yeah i don't use any background syncing or notification, don't leave wifi on when sleep mode, .... the only thing i use is auto-sync but for gmail only, nothing else
does this mean ios has a better sleep mode, like it puts the device into some kind of "extreme" sleep?
and i would be very happy if this tf300 only drain 3% or less in sleep mode / 24 hours, i love this thing but always jealous when it comes to battery
Sent from my ASUS Transformer Pad TF300T
Click to expand...
Click to collapse
You answered your own question. The iPad 3has double the battery capacity. So no wonder it drains1percent an hour.
The bigger battery capacity if anything tells me it has horrible power management so it compensated by having a much larger battery.
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
elesbb said:
You answered your own question. The iPad 3has double the battery capacity. So no wonder it drains1percent an hour.
The bigger battery capacity if anything tells me it has horrible power management so it compensated by having a much larger battery.
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
Click to expand...
Click to collapse
you didn't get my point,
you said this tablet drains 6% / 24 hours in sleep mode
i said the ipad 3 has double battery and drains 1% / 24 hours in sleep mode,
so this tablet has half the battery capacity, but drains 6 times more compared to the ipad,
shouldn't it just drain 2 (or maybe 3) times more? that's why i said i expect it to drain about 2 or 3% every 24 hours, not 6 - 8%
and for your information the ipad does not has horrible power management, or at least does not have horrible battery life, i usually get about 10 hours of web browsing with it compared to 5 hours on this tablet
i'm not praising the ipad or something, these are just true things, in fact i like this tablet better, but like i said i'm always jealous with my brother ipad's 3 when it comes to battery life,
Sent from my ASUS Transformer Pad TF300T
nooktablet said:
you didn't get my point,
you said this tablet drains 6% / 24 hours in sleep mode
i said the ipad 3 has double battery and drains 1% / 24 hours in sleep mode,
so this tablet has half the battery capacity, but drains 6 times more compared to the ipad,
shouldn't it just drain 2 (or maybe 3) times more? that's why i said i expect it to drain about 2 or 3% every 24 hours, not 6 - 8%
and for your information the ipad does not has horrible power management, or at least does not have horrible battery life, i usually get about 10 hours of web browsing with it compared to 5 hours on this tablet
i'm not praising the ipad or something, these are just true things, in fact i like this tablet better, but like i said i'm always jealous with my brother ipad's 3 when it comes to battery life,
Sent from my ASUS Transformer Pad TF300T
Click to expand...
Click to collapse
I get all day battery with about 30 percent left at the end if the day with like 7or 8hours screen on time.
I really don't see how you're jealous when it comes to battery life. I couldn't believe how long this battery lasts. And I'm going to do a test, I'll try not to use my tablet tomorrow and I'll see how much it drains just to get solid numbers. I'll turn of Wi-Fi and everything.
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
With my first set of tweaks I lost 3% over 9 hours Friday night (my wife's ipad 2 lost 0% over 12 hours incidentally for comparison). With my second set of tweaks last night I only lost 1% over 13 hours! I made a few more today and we'll see how it does overnight tonight.
Sent from my DROID BIONIC using Tapatalk 2
elesbb said:
I get all day battery with about 30 percent left at the end if the day with like 7or 8hours screen on time.
I really don't see how you're jealous when it comes to battery life. I couldn't believe how long this battery lasts. And I'm going to do a test, I'll try not to use my tablet tomorrow and I'll see how much it drains just to get solid numbers. I'll turn of Wi-Fi and everything.
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
Click to expand...
Click to collapse
all day with 30% left and 7 or 8 hrs screen on time
wow i'd be very happy if that's the case for me.
i can only get about 5 - 6 hours screen on time with 15% battery left (brightness 30%)
and that's why i'm jealous,
i only have the tablet alone btw, no keyboard dock (no extra battery)
collindv said:
With my first set of tweaks I lost 3% over 9 hours Friday night (my wife's ipad 2 lost 0% over 12 hours incidentally for comparison). With my second set of tweaks last night I only lost 1% over 13 hours! I made a few more today and we'll see how it does overnight tonight.
Sent from my DROID BIONIC using Tapatalk 2
Click to expand...
Click to collapse
how did you tweak it to make it lose only 1% over 13 hours, tell me please,
Sent from my ASUS Transformer Pad TF300T
nooktablet said:
how did you tweak it to make it lose only 1% over 13 hours, tell me please,
Sent from my ASUS Transformer Pad TF300T
Click to expand...
Click to collapse
I believe the key is to chase down the programs that are waking the device while the screen is off. My methodology was this:
1. Install a battery monitoring program that lets you view what is using the battery and specifically what programs are waking the device and the number of wakelocks per program. I personally use Gsam Battery Monitor but I believe a lot of people use Bettery Battery Stats for the same thing.
Before going to bed I would charge the device to 100% and then unplug it without turning it on. I would then let it sit usually overnight and until I got home from work the next day (16-20 hours).
2. Open up the battery monitoring software and look at how many times each app woke the device. In Gsam this is done by clicking on “App Usage” from the main screen and then selecting “View Num Times Waking Device” from the drop down menu.
3. Once you know which apps are waking the device you need to figure out what to do about it. It seems that you can control some of them typically by going into the app’s settings and turning off any background checks/updates and turning off any notifications. In my case the main offender was an ebay app that I had installed when I had a few auctions going on last week. It had woken the device over 600 times in 16 hours or so because I had push notifications on! That one I simply uninstalled.
Some programs I could not get to stop waking the device no matter what I changed in the settings of the app. ScoreMobile “TheScore” was one of these. No matter what I did it would wake the device 4 times per hour. Programs like this I chose to freeze with Titanium Backup until I can figure out what to do with them.
I also turned off automatic updating of my google apps, unchecked all 3 boxes under Location Settings”, turned off autosync, turned off calendar notifications, and added a tasker profile that places the tablet in airplane mode when the screen is turned off and turns it off when the screen comes back on. Some of this may be overkill for the time being but right now I am working to get the consumption as low as possible over a 24 hour period then I may start turning things back on until I reach what I consider an acceptable drain.
Sunday night to Monday I went 23 hours with 3% battery drain but I had installed ScoreMobile that day and like I stated above it had like 91 wakeups over that time. I froze that app last night and we will see how it does, I think I should be around 2% for 24 hours.
Let me know if you have any questions.
nooktablet said:
all day with 30% left and 7 or 8 hrs screen on time
wow i'd be very happy if that's the case for me.
i can only get about 5 - 6 hours screen on time with 15% battery left (brightness 30%)
and that's why i'm jealous,
i only have the tablet alone btw, no keyboard dock (no extra battery)
how did you tweak it to make it lose only 1% over 13 hours, tell me please,
Sent from my ASUS Transformer Pad TF300T
Click to expand...
Click to collapse
I agree with Collin. You have trace what's chewing the battery. But I also wanna say I have clean ROM installed as well as the tf700 kernel. So that is prolly playing a huge role in battery life. But straight stock, good luck lol.
Sent from my SGH-T999
"So I put my phone into airplane mode and threw it... worst transformer ever. -.-" -My friend
Related
Hello all, I'm planning to get myself one, when it will appear in my country... Question is, how much battery consumes in standby? I mean, number of hours before it is under 5 percent and needs recharge, from 100%. For example an Ipad has 30 days, I've read numerous reviews that show EEE Transformer in a bad light, with sleep mode eating 20-30 percent per night, or 30 hours standby(Engadget) at most. Rest of reviewers don't point to standby time, only to battery life, I want to know if it dies after 30 hours of sleep mode. WiFi on and without, it's good to know. For example My Galaxy S with WiFi on and a weather app refreshing every hour, with Gmail, has 2 days before it drops below 30%, I don't talk that much on phone and never use Internet browsing on it.
deio said:
Hello all, I'm planning to get myself one, when it will appear in my country... Question is, how much battery consumes in standby? I mean, number of hours before it is under 5 percent and needs recharge, from 100%. For example an Ipad has 30 days, I've read numerous reviews that show EEE Transformer in a bad light, with sleep mode eating 20-30 percent per night, or 30 hours standby(Engadget) at most. Rest of reviewers don't point to standby time, only to battery life, I want to know if it dies after 30 hours of sleep mode. WiFi on and without, it's good to know. For example My Galaxy S with WiFi on and a weather app refreshing every hour, with Gmail, has 2 days before it drops below 30%, I don't talk that much on phone and never use Internet browsing on it.
Click to expand...
Click to collapse
I can't compare to Ipad, but overnight the Asus drains about 5 to 10 percent. That is wifi set to switch off when screen is off. Second about the Endgadget review, my asus lasts on one charge 2 days (48h) normal use, that is normal usage: playing, web browsing, reading, overnight screen off, etc. So you see 30h of sleep mode is very very very wrong because not optimized/too many apps/wifi on.
So I'm no longer reading reviews of the asus, but reading/playing on the Asus
Hope this helps,
rio
but still it looks not that much compared to apple ipad2, which is kinda sad. I was kinda hoping that this device outperform ipad2 in battery too...
some reviews claims it gets close (1hr difference) and some say not even trying (6hr difference) against the iPad, but I think some of them were using live wallpapers which drain battery pretty fast. It has never stated to be better than the iPad though unless it was with dock.
I dont know if it lasts so much as ipad. However, in my exp. with ipad1 when it had ios 3.2. battery was lasting ages, almost no loss overnight as you point out.
After updating it to 4.2 battery was really drained hard. It was difficult to have it running more than 2/3 days on a row. And the difference came on non use periods. On continous use, it was lasting about the same.
This is, are you sure ipad is doing 30 days?
The only thing that lasts almost a month in standby time in the android world is the galaxy tab.
The battery is definitely not as standby friendly as the ipad. My mom has the first gen ipad and it uses basically no power in standby. On my transformer, I get a drop overnight (8 hours or so) of about 2-3% with wifi off. I use setcpu with a screen off profile to restrict the cpu to the minimum frequency.
It's disappointing because my droid incredible, with a 1500mah battery (1/4 of the transformer?) doesn't drop at all overnight in airplane mode.
I just turn mine off at night b/c I have no need to sync stuff overnight. For that matter I also turned autosync off by default for most apps even when it is on. Basically uses 0 battery that way (maybe 1%). I know that doesn't work for everyone though.
I pulled my TF & dock off the AC on Tuesday at about 7:45AM, both fully charged. As of an hour ago, I had about 72% juice left in the TF (dock is drained). It's been docked the entire time. I've only used it lightly the last 3 days. I did download & install 3.1 during this time as well.
Post your battery usage on your transformer, and how much juice you are getting.
Mine looks like it's draining much.
Sent from my DROIDX using XDA Premium App
I had 100% battery when I started using it last night at 4pm used it heavily from then until about 830, which included the firmware update and some angry birds and I was just under 50% by 10pm after 1.5hrs of standby. Didnt plug it in until i left for work after some browsing this morning andwas at 35% then. Hope that helps!
I have an ipad 2 and a transformer and par to par my ipad 2 last longer, but I love honeycomb and it's probably due to the fact that we have real background applications
Sent from my DROIDX using XDA Premium App
For my first charge, I wanted to charge it up and then run it down until it died to calibrate the battery. It lasted a good two days, probably 9 hrs of pretty heavy use as I goofed with it constantly. It was hard to get it to finally die, I turned the brightness up all the way and kept it alive to kill the last 5%.
It was draining pretty quickly at first but it improved over time, specially after the first FOTA.
I've been using it on and off over the past 3 days and it has just over 40%.
brachiopod said:
For my first charge, I wanted to charge it up and then run it down until it died to calibrate the battery.
Click to expand...
Click to collapse
Just wondering do we really need to run it down till it dies and then do a full charge?
dazz87 said:
Just wondering do we really need to run it down till it dies and then do a full charge?
Click to expand...
Click to collapse
I dunno. People are all over the road on this, so I'll just give you my opinion. I don't think that full discharge of lithium ion batteries is good for them. These aren't the old fashioned NiCd batteries where that was true. The more you use your lithium battery, the shorter it's life. There are people that say otherwise. That said, on an Android machine, I think that the battery calibration needs to see the full range of the battery to be accurate; and it is worth one full cycle to get things working. That's why I did it. I'm not recommending that anyone else do it, that's just what I did with mine.
I thought mine was draining fast at first but I'm on about 32 hours since it was plugged in to get its full charge. Of that a solid 3 to 4 hours of use easy. Currently at 19%
Sent from my Transformer TF101 using XDA Premium App
Wouldn't it take a couple of discharges and recharges before the battery gets conditioned?
The other day it was on 100% brightness and light usage I think I got 6 hours out of it. 5 hours in use I'd say. Max brightness and touch intensive stuff like angry birds and playing w/ it FWIW. I'm sure at a lower brightness you could get close to the 9 hour battery life. On the other hand before work I unplugged it at 100% and it sat in a 40 degree car from 7:00am to 5:00 pm and only fell down to 94%.
Asus does recommend a series of full discharges and then basically keeping it topped off from then.
I've been using it almost non stop since 8:00 pm, when it was fully charged. Now, it is 3:00 AM, and at 42% battery life. If it keeps going at this rate, I should have over 10 hrs of battery life. It is on auto brightness. I've been using it to study pdf powerpoint slides, playing some angry birds, and surfing the net with firefox. During the longer studying sessions, I used airplane mode. That probably saved battery life.
I left my transformer fully charged last night and turned it back on this morning to find the charge at 55%.
Didn't seem to be any background apps running that could have accounted for the charge drop, though my wifi was stuck off requiring a reboot to turn it back on.
Anyone else with similar experiences?
den997 said:
I left my transformer fully charged last night and turned it back on this morning to find the charge at 55%.
Didn't seem to be any background apps running that could have accounted for the charge drop, though my wifi was stuck off requiring a reboot to turn it back on.
Anyone else with similar experiences?
Click to expand...
Click to collapse
I am having the same issue. Last night I had 42% when I put it in sleep mode. This morning tried taking it out of sleep mode and the tablet reboot some time last night Weird. When it came back on it was down to 22%. Dont know but I am getting horrible battery life. Started using it at 10pm last night and by 1 am it was at 45%. Had on auto brightness All I did was surf, and stream music from my server. Maybe I need to drain it down tonight......
dazz87 said:
I am having the same issue. Last night I had 42% when I put it in sleep mode. This morning tried taking it out of sleep mode and the tablet reboot some time last night Weird. When it came back on it was down to 22%. Dont know but I am getting horrible battery life. Started using it at 10pm last night and by 1 am it was at 45%. Had on auto brightness All I did was surf, and stream music from my server. Maybe I need to drain it down tonight......
Click to expand...
Click to collapse
That shouldn't happen. Maybe try turning airplane mode on before you go to sleep? Or maybe you need a task manager?
Attached an image of my battery life. I definitely got around 11 hours on one charge.
As for recharging, it seems to recharge to full in 2-3 hours.
I'm finding that during actual use, my TF is doing about as well as my Xoom. However, the Xoom is using MUCH less battery while on standby. Where the TF is burning around 2.5-3%/hour on standby, the Xoom burns <1% on standby.
I'm still on the original build (i.e., haven't had a single update applied) and as noted earlier in the thread some things might have been optimized. And, I'm still burning on average around 3.5%/hour, so that still translates to over 25 hours battery life. Not as good as the Xoom but still pretty decent.
If it gets a little better in standby after an update, though, I won't complain.
I got 9 hours 34 minutes of CONSTANT use. For 4 hours straight I was running a flash application constantly.
I'm doing my second batter run down right now with normal usage.
When mine worked, I used it for nearly 2 hours straight on wifi with the screen on Auto, playing games and browsing the web. It drained 20% extrapolating such I'm getting the 9.5 hours of constant use WITH games. I was pleased until my screen failed on me
When you all drain the battery, are you taking it all the way till it powers itself off or plugging in at a low power state?
Sent from my Transformer TF101 using XDA Premium App
i don't have exact times but on my first charge it drained fairly quickly and was below 15% in maybe 36 hrs? with my xoom the first charge lasted 5 days! so in comparison as of right now the xoom had better battery life, but people are saying it gets better so we'll see. i don't mean this as a complaint at all because it doesn't bother me to charge it and i love this tablet. just something i have noticed.
i might add that these times i have given are just browsing, using a few apps and games, but no movies are anything.
aftre seeing a couple other posts in this thread it seems the xoom may just be getting much better standby time.
As stated above, I'm curious what the answers will be.
We obviously can't define "heavy use", but I think everybody gets the point
I'd like to ask the 7-8 guys how they do it?
Soniboy84 said:
I'd like to ask the 7-8 guys how they do it?
Click to expand...
Click to collapse
I use auto brightness.
Also, when I got the TF I did the whole break-in thing. It was in the manual.
Now, if you want to get better life you can reset your lithium ion battery. Use it till its below 5%, maybe even go to 0%, then charge it to 100%.
Do this atleast twice back to back. You should see your life grow.
Also, never over charge it, and never leave it charging at night. Even though some people will tell you it 'stops' charging once it hits 100%, it actually goes to trickle, and trickle or not, its still over charging it.
denverseven said:
I use auto brightness.
Also, when I got the TF I did the whole break-in thing. It was in the manual.
Now, if you want to get better life you can reset your lithium ion battery. Use it till its below 5%, maybe even go to 0%, then charge it to 100%.
Do this atleast twice back to back. You should see your life grow.
Also, never over charge it, and never leave it charging at night. Even though some people will tell you it 'stops' charging once it hits 100%, it actually goes to trickle, and trickle or not, its still over charging it.
Click to expand...
Click to collapse
Thanks for the answer,
I unfortunately don't have the manual with me, but true, I just got the tab yesterday. So do you think in time it will improve? What is that break thing you mentioned?
Soniboy84 said:
Thanks for the answer,
I unfortunately don't have the manual with me, but true, I just got the tab yesterday. So do you think in time it will improve? What is that break thing you mentioned?
Click to expand...
Click to collapse
Mine has also got better only thing that kills the battery is playing Galaxy on fire 2 other than that i watched two 2 hour long movies and still had 40 % left
denverseven said:
I use auto brightness.
Also, when I got the TF I did the whole break-in thing. It was in the manual.
Now, if you want to get better life you can reset your lithium ion battery. Use it till its below 5%, maybe even go to 0%, then charge it to 100%.
Do this atleast twice back to back. You should see your life grow.
Also, never over charge it, and never leave it charging at night. Even though some people will tell you it 'stops' charging once it hits 100%, it actually goes to trickle, and trickle or not, its still over charging it.
Click to expand...
Click to collapse
Manual says "to prolong battery life fully charge the battery for up to 8 hours when using the Eee pad for the first time and whenever the battery is fully depleted" Often wonder where you get these post that say don't leave it charging for more than 2 hours.
Auto brightness is really dim on my old eyes
BTW I have a dock and get a lot more than 7 or 8 with it ...very close to the 15 or so they say ..it is according to what your doing...if your playing games, watching flash or movies your mileage will vary
Same here, I usually just watch movies, (occasionally getting distracted by some tower defense game), but apparently my overall usage is due to the screen brightness. I had it on autoadjust for a while in the beginning (lasted like 8 hours) but then I don't like (is there an adjust option for autoadjust? it'd be a lot better if it made it just 10% brighter than it usually sets it..) the autoadjust, so now I usually have it on like 60-100% brightness and I still get 6-7 hours on it. Then i just dock it for another couple of hours.
Hm... too bad I like bright screens
So maybe that's the reason mine only lasts 3-4 hours :S
We'll see later on, maybe it will improve!
Soniboy84 said:
Hm... too bad I like bright screens
So maybe that's the reason mine only lasts 3-4 hours :S
We'll see later on, maybe it will improve!
Click to expand...
Click to collapse
Wow. I have mine cranked and it lasts well over that. Closer to 6 with consistent video watching.
i mostly use mine to browse online and music etc,i get around 9 hours with auto brightness
*added*
i used systempanel to monitor when i sleep to check usage,its between 1~3 percent for the cpu, battery life stays flat lined. cpu activity averages 30% while device is at 100%. i use advance task killer and juice defender and disable connections and sync etc.
well one thing for sure, my mifi died before my transformer died, so i roughly say 6 hours ++. when in music, it saves a lot of battery.
DilloDroid said:
Often wonder where you get these post that say don't leave it charging for more than 2 hours.
Click to expand...
Click to collapse
2 hours is silly. Mine takes at least 2.5 to charge to 100%. I'm not sure where you've read that, but don't believe it! lol.
Li-ion batteries are great because they are extremely flexible and charging them like 5 times a day isn't a bad thing like it would be with an older technology.
But they are still susceptible to overcharge issues because they generate heat when charging, and that heat changes the composition of the battery, which makes it last less and less over time. That's why li-ions hold roughly 50% of their charge after 1.5 years of use.
And that's why one shouldn't overcharge it.
about 6~7 on stock..just recently tried prime 1.7 so will check for any changes
Does Netflix count as heavy usage? if so then I get about 8 hours
I use mine to browse and to remote desktop to my PC. Sometimes i use gchat and other times play a game or two. I get around 7-8 hours from the eee pad only. With the docking i get much more.
I use auto brightness, and wireless off when screen is off. This way i can leave my tf up and running all night and is ready to be used at any time. The main power consumption are the screen and the wireless on my usage profile. Both together consume more that 70% of my battery.
Is it possible to switch off the wifi automatically when the screen goes off?
Yes, of course. Go to wifi-properties, then choose extended (on German: "Erweitert") at the top right and there you can choose your setting.
(I've got a german TF - there it is "WLAN-Einstellungen"->"Erweitert")
With auto-brightness and wlan-off on screen-off 9 hours is no problem.
Great Tablet
I run Clemsons V4 Final, no dock and have the screen timeout set at 30 minutes. I didnt pay attention to the recommended battery stuff in the manual. And usually leave mine on the charger all night to be sure I start the day at 100%. I use my TF all day for work, taking notes, surfing and so on. I generally get home with 40%, if I dont play Angry Birds. I have played just music for 8.5 hours continuous with a 15% drop in battery.
Not iPad performance but still a keeper.
I put 6 hours of HEAVY use, but I usually get a full day's usage out of it since I keep my pad tethered to my charger at my desk all day at work.
tried the break-in charging thing (drain to 0% then charge it for 8-9 hours). My battery life changed drastically. Did it only once but ill charge it like that again when it depletes to 0%. It running now on its 3rd day with minimal to moderate use (28% as I am writing this). Will post battery drain per hour once done with the 2nd charging
No Dock, 2 Mobile Data Application frozen via Titanium back up
According to some review, infinity should give 9.5 hours of play time with WIFI on. Different use results in different result for sure, but I feel like my battery life is less than that of Galaxy 10.1 and if I remember Xoom. Not matching up with iPad is understandable as no android tablet does as iPad does no multi-tasking and wifi turns off quickly after sleep. But worse than Xoom or 10.1 seems something potentially wrong with my unit.
Is there any official application that can test battery condition? In Mac, there is application called coconut battery which tells you how much of battery you can charge i.e. no battery is usually 100% of its maximal capacity and over time it loses capacity gradually but this application tells that. I wonder if there is similar for Android tablet.
By the way my usage is like reading book and comics, surfing net, not much of game. I'm in balance mode. I checked turn off WIFI while in sleep. I did 1GB+ file transfer over the WIFI. With this overall screen time of 5 hours and I only have 15% battery left. I probably won't make it to 6 hours..
Ehhh... as far as I can tell, the Prime (and consequently, the Infinity) should outrun any iPad as to battery life. What's your scree brightness?
I get like 6-7 browsing, 9-10 reading pdfs and much less gaming (balanced mode, brightness 30%). You can see some averages and estimates in the Battery HD app / widget.
---------- Post added at 01:23 AM ---------- Previous post was at 01:22 AM ----------
MartyHulskemper said:
Ehhh... as far as I can tell, the Prime (and consequently, the Infinity) should outrun any iPad as to battery life. What's your scree brightness?
Click to expand...
Click to collapse
Outrun iPad?? Maybe with the dock. Sorry...
Outrun iPad?? Maybe with the dock. Sorry...[/QUOTE]
On the crApple forums, loads of people report a consistent 7 hours of use for the iPad3 (or the new iPad, or whatever the thing is called). The TF700 should eat it alive with the dock attached, whereas they'd come out about equal when going face to face 'barehanded'.
EDIT: nice test: http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html of the OLD iPad2 vs. Transformer 101. Yes, agreed, it is old, but the iPad3 has double the power consumption and only 70% more battery capacity. You go figure.
MartyHulskemper said:
Outrun iPad?? Maybe with the dock. Sorry...
Click to expand...
Click to collapse
On the crApple forums, loads of people report a consistent 7 hours of use for the iPad3 (or the new iPad, or whatever the thing is called). The TF700 should eat it alive with the dock attached, whereas they'd come out about equal when going face to face 'barehanded'.
EDIT: nice test: http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html of the OLD iPad2 vs. Transformer 101. Yes, agreed, it is old, but the iPad3 has double the power consumption and only 70% more battery capacity. You go figure. [/QUOTE]
I agree with the table as I owned Xoom, Galaxy 10.1, and currently have iPad 2 and Infinity. I don't know about New Ipad. But in my experience iPad 2 always give solid 10 hours or so but again that's probably not fair comparison against Infinity which uses HD screen. So I was going off of http://www.engadget.com/2012/06/25/asus-transformer-pad-infinity-tf700-review/, which shows Infinity having superior battery than the most of newer versions of Xoom 2, Galaxy 2 10.1 etc. I have no doubt with Docking station, Infinity's battery life would be unbeatable except by transformer prime.
But my concern was actually if my unit battery is semi-defective and not charging to full way.
I usually have my screen brightness turned all way down; whereas, above test is 50%... so I was surprised my result. Unless 1GB transfer consumed so much or overnight standby consumed a lot (despite turned off WIFI box checked..). Since we cannot really go off by battery screen on ICS with inifinity, which shows WIFI more than screen... I just have no good way to assess the condition of my battery...
HoushaSen said:
I agree with the table as I owned Xoom, Galaxy 10.1, and currently have iPad 2 and Infinity. I don't know about New Ipad. But in my experience iPad 2 always give solid 10 hours or so but again that's probably not fair comparison against Infinity which uses HD screen. So I was going off of http://www.engadget.com/2012/06/25/asus-transformer-pad-infinity-tf700-review/, which shows Infinity having superior battery than the most of newer versions of Xoom 2, Galaxy 2 10.1 etc. I have no doubt with Docking station, Infinity's battery life would be unbeatable except by transformer prime.
But my concern was actually if my unit battery is semi-defective and not charging to full way.
I usually have my screen brightness turned all way down; whereas, above test is 50%... so I was surprised my result. Unless 1GB transfer consumed so much or overnight standby consumed a lot (despite turned off WIFI box checked..). Since we cannot really go off by battery screen on ICS with inifinity, which shows WIFI more than screen... I just have no good way to assess the condition of my battery...
Click to expand...
Click to collapse
Are you sure that you Infinity is going into deep sleep? There are many cases where a "rogue" app will cause the tablet to never enter deep sleep, thereby draining the battery much faster in standby. You can check for deep sleep with CPU Spy...
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
I still need to do a scientific test but today at work my screen was on for 3.5 hours and the tablet was off the charger for 11.5 hours. My battery was down to 32%. My screen brightness is IPS off and fixed at around 90%. Looks lovely
I ran my xoom for 2 hours even and 2 hours off charger. During this time however I downloaded a bunch of apps, loaded up all the apps, ran weather bug looking at weather maps, and did some browsing. I was using it continuously to get the feel compared to my infinity.
Anyway after all that the xoom was around 77% batter remaining.
I know that when I tested my xoom soon after I got it I could get around 6.5 hours on the screen before it ran down. On standby it barely uses anything. I'm guessing I use it at work around 3-4 hours. Sometimes I'd forget to charge my xoom and the next day it would usually get me though most of the day... To maybe 1-2pm and I come in at 6:30 so thats almost my whole day.
So yes the battery is definitely less. Tomorrow I'm putting the screen brightness on auto. Thats how had the xoom so maybe it will be a better comparison. Certainly looking at battery usage the screen was using a lot of power. What looks REALLY odd however is that wifi is my number one battery usage.
That just doesn't look right does it? Now I do have it on wifi all day so in this case for 11.5 hours. But I don't on my phone wifi is like 3%... Maybe my tablet and problems are related to an issue with wifi?
Anyone else keep their wifi on notice a big power drain on wifi?
check to see if you have a battery leak with some app. turn gps off, dont use auto brightness lol. keep it down more like 65 % indoors you dont need more than that. use the app called juice defender and make sure you kill off anything your not using. google a list of top 10 thigns to do to android to make battery last longer
ethion said:
Maybe my tablet and problems are related to an issue with wifi?
Anyone else keep their wifi on notice a big power drain on wifi?
Click to expand...
Click to collapse
Yes - I do. My TF700, no dock, seemingly handles just about 4 - 5 hours of activity (not stand by but actual use, be it video, audio, browsing, etc), and when I look at the battery stats under settings - it shows that over 80% went into wi-fi.
I have heard that to make up for the weak Prime's reception ASUS overpowered Infinity wi-fi, so it sucks power out of the battery pretty fast.
I am also assuming that as usual, based on latest update, serial number, QA, etc, the behavior will be different for different tablets, some will see it and some will not.
Good news is that these things are fixable by a soft patch, so we shall see something released by ASUS if many people complain.
So I still have to do more testing, but I guess my tablet is not defective (at least in regards to the battery). i do get pretty much the same result as others replied me back here. After checking the ASUS main site, 14 hours with Dock was measured in Power Saving mode, 720p movie, WIFI on.
So key here was indeed power saving mode, which I was not using. i just switched to Power Saving mode and just looking at 10% drop mark, it seems to go ~50 minutes, which equates similar to what 9.5 hours one site suggested. Application (as far as what I use) runs fine and seems as smooth BUT main thing noticed here is refresh rate of the screen in power save mode seems much lower so when I go back to main screen, i can see some flickering.
But it's great to be able to boost battery life by couple hours and more.
With the device off - - after a full charge, my battery says 97 percent....NEVER 100%. With the charger plugged in, while using the device, I get a max 98 percent charge. Anyone having a similar experience? Does the device actually use 2% of
the battery when turning it on? I'm befuddled.
xRevilatioNx said:
With the device off - - after a full charge, my battery says 97 percent....NEVER 100%. With the charger plugged in, while using the device, I get a max 98 percent charge. Anyone having a similar experience? Does the device actually use 2% of
the battery when turning it on? I'm befuddled.
Click to expand...
Click to collapse
Do you usually drain the battery all way down after each use or close to it?
Got my tab yesterday. After charging I did some I would say normal usage, browsing, installing some apps, transfering data, watching video and a cam chat for about 2 hours on skype, standby over night.
I used balanced mode, auto brightness, external speaker on highest volume, sometimes superips (but not for long), always had the external sdcard mounted, always wifi on, gps on, autorotate on.
I had >14h without the dock, should have made a screenshot.
I will do a drain test when I charged the battery 4 or 5 times.
---------- Post added at 01:48 PM ---------- Previous post was at 01:46 PM ----------
xRevilatioNx said:
With the device off - - after a full charge, my battery says 97 percent....NEVER 100%. With the charger plugged in, while using the device, I get a max 98 percent charge. Anyone having a similar experience? Does the device actually use 2% of
the battery when turning it on? I'm befuddled.
Click to expand...
Click to collapse
Also when the device is charged up to 80% disable everything, wifi, gps and so on.
Then suspend the device and do not turn it on for at least 1 hour.
I do it that way and get 100%.
HoushaSen said:
Do you usually drain the battery all way down after each use or close to it?
Click to expand...
Click to collapse
Got my replacement yesterday. That was my first full charge. I allowed it to charge to 75% then turned it on (while still charging) and set it all up. I had the charger plugged in for 10 hours while playing around with it. Went to bed, turned it off and let it charge for another 4 hours. When I turned it off . I noticed it was only at a 97% charge.
I'm using it now to let it drain to zero. Then will do another full charge. I've only had it on for 90 minutes on balanced setting and the battery is already showing a 40% drain.
For those worried about the battery only being charged to 97-98%: it's normal, and a way to conserve your battery. Li-ion batteries don't like going to 100% full charge since it increases the temperature a lot and in the long term reduces their capacity. So the battery gets (very shortly) charged to 100% (or very close to it), then it will decrease slightly to high 90s and the charger will go into maintenance charging, keeping it close to 100% charge.
Some manufacturers "masquerade" this by setting the percentage to show 100% even if it really isn't. Keeps users from losing sleep over trivial things like that
The batteries don't like deep discharges either, so there's no use emptying them completely. Top them off whenever you can. Anywhere in between 40% and 80% is good.
TL;DR: Don't worry, the battery is fully charged even though it says 97 or 98%. Don't empty the battery completely.
Edit: Some useful information regarding Li-ion batteries here, http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
Thanks for this, but there was some discussion with these studies already. But probably it's right not to do anything extreme.
That being said, we probably have to admit that there is a reason to DISCHARGE and CHARGE FULLY a few times - so that all the apps/widgets that measure battery capacity, estimate life etc. could learn all they can by more (and more exact) data.
Einride said:
For those worried about the battery only being charged to 97-98%: it's normal, and a way to conserve your battery. Li-ion batteries don't like going to 100% full charge since it increases the temperature a lot and in the long term reduces their capacity. So the battery gets (very shortly) charged to 100% (or very close to it), then it will decrease slightly to high 90s and the charger will go into maintenance charging, keeping it close to 100% charge.
Some manufacturers "masquerade" this by setting the percentage to show 100% even if it really isn't. Keeps users from losing sleep over trivial things like that
The batteries don't like deep discharges either, so there's no use emptying them completely. Top them off whenever you can. Anywhere in between 40% and 80% is good.
TL;DR: Don't worry, the battery is fully charged even though it says 97 or 98%. Don't empty the battery completely.
Edit: Some useful information regarding Li-ion batteries here, http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
Click to expand...
Click to collapse
Thanks for the info! Good to know that you don't have have to do a complete battery drain, initially. Or ever for that matter.. :good:
Brightness 25 percent with wifi on and battery drain 1 percent every 5 minutes
The battery was 92 percent at 9 am. Now it's 9:30 am and it's 82 percent
Also yesterday when I went to sleep at 12 pm it was 94 percent until 9 am this morning it was 92 percent and yesterday I put it in power saving mode wifi GPS Bluetooth everything off
I think I got a defective item
nooktablet said:
Brightness 25 percent with wife on and battery drain 1 percent every 5 minutes
The battery was 92 percent at 9 am. Now it's 9:30 am and it's 82 percent
Also yesterday when I went to sleep at 12 pm it was 94 percent until 9 am this morning it was 92 percent and yesterday I put it in power saving mode wifi GPS Bluetooth everything off
I think I got a defective item
Click to expand...
Click to collapse
maybe, but maybe it's just an app that is behaving badly, do a factory wipe and do not install third party apps, then test again
i didn't do a factory reset, i don't know should i? it's new, and i didn't really follow the user manual: yesterday i got it and put it on charge for 8 hours, but while it's charging i updated the firmware, and downloaded a lot of apps (about 20 apps, no heave games), also because i was so excited so i used it every 5 - 10 minutes every hour while it was charging. basically i didn't leave it charge without using like the manual says "charge at least 8 hours BEFORE FIRST USE"
but i don't think that could make the battery goes this bad. i just ran riptide gp with brightness about 35%, after 2 minutes of playing the game the battery went down 2%, before i played the game i used asus task widget to kill all tasks, also wifi, bluetooth, gps was off, was in balanced mode.
how should i test my battery? i only charged it once, when i contacted asus about first charge question he told me that after first charge use it until it's almost dead and then charge again (like a full charge cycle or something but i don't know what that means). i think i'll contact him again and talk about this battery issues.and everything looks good, apps and games run quickly, riptide runs without lags and water effects look awesome, i don't want to return it, it's a pain, i got it from amazon and i don't even know how to ship the package back to amazon lol (i never shopped online).
nooktablet said:
basically i didn't leave it charge without using like the manual says "charge at least 8 hours BEFORE FIRST USE"
Click to expand...
Click to collapse
Your battery was already a little charged, right? Like 20-30 percent. So the first charge/use was already performed. I usually don't leave the battery that long to charge when I have a new device. Only until 100% then I disconnect it and use it.
Trimis de pe Motorola Defy
nooktablet said:
Brightness 25 percent with wifi on and battery drain 1 percent every 5 minutes
The battery was 92 percent at 9 am. Now it's 9:30 am and it's 82 percent
Also yesterday when I went to sleep at 12 pm it was 94 percent until 9 am this morning it was 92 percent and yesterday I put it in power saving mode wifi GPS Bluetooth everything off
I think I got a defective item
Click to expand...
Click to collapse
I think that the battery reporting lagged a bit, it had drained more than 2% through the night. Also batteries sometime take a bit to set, I recommend draining it to less than 10% once a month and fully charging without interruptions. Disable all bloarware you don't use, get auto airplane mode and autostarts. Also getting the molded buildprop from seanzcream is supposed to help a bit.
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
vap_66 said:
Your battery was already a little charged, right? Like 20-30 percent. So the first charge/use was already performed. I usually don't leave the battery that long to charge when I have a new device. Only until 100% then I disconnect it and use it.
Click to expand...
Click to collapse
no the battery was empty, it had no power i could not even power it on, at first i thought it was dead on arrival, then i made a thread in this forum and someone told me to charge it, after charging it for 2 hours i was able to turn it on, when i asked asus do i really need to charge for 8 hours the first time like the manual says and they said:
It is recommended that you give it at least an 8 hour charge. I mean, if you don't, and charge it only 5 or 6 hours, by no means will it kill the tablet. The point of the charge is to condition the battery, which has been sitting idle for who knows how long. Letting it charge for 8 hours before putting a load on it will extend it's life and lower the chances of you getting a battery that won't hold a charge only a few days in.
When you unbox it, just plug it in and let it charge without powering it up. You can turn it on, it won't hurt it, but try not to do anything on it as it charges the first 8 hours.
Click to expand...
Click to collapse
that's why i let it charge for 8 hours
The first 5-10 charges are a pain... then it settles down. Ihavent much used it on stock rom but termleechs 4.0.4 aokp so no bloat on board. Just let it load a cpl of times it should settle in after that.
Cheers
Sent from my A700 using xda app-developers app
Can you tell me what you mean? Do you mean that the battery will get better after 5 to 10 charges?
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2