I will tell ya, I have been extremely disappointed by my new MT4G's battery since I got it just before Christmas.
If I unplug at 7am to work (I work at home) I can bring it in, not use it all morning, and by 2 pm I was looking at 70% battery with almost zero use? If I used the phone at all, I'd be looking at charging it by 3 pm.
Needless to say, if I went to sleep, I HAD to have the thing plugged in to charge as it was draining very fast while doing nothing.
Never really could figure out why, but yesterday mid day I installed Cyanogenmod 7 on a full charge and it's 7:53 am today (I didn't plug my phone in to charge last night) and I'm still at 50%.
No juice defender, nothing, didn't plug it in (I forgot, and when that usually happens my alarm doesn't go off because it's dead).
If you're having massive battery issues.......try CM7...I had tried everything on glacier roms to get better life. My phone would randomly wake up...now it doesn't.
Anyone have a similar experience moving to CM Roms?
That sounds like it might be worth checking out, but I will wait until the official cm7 release is out.
I am using setcpu to underclock my phone while the display is off. I unplug at around 8 AM, and I can get to 1 or 2 pm with 98-99% of my battery remaining with no use. I went to sleep last night around 12 with 29% left, and I woke up at around 9 with about 27% left. I should also add that I spent a pretty solid amount of time yesterday browsing the internet and playing angry birds, so I was pretty pumped to have that kind of battery left at the end of the day.
beelbeel said:
That sounds like it might be worth checking out, but I will wait until the official cm7 release is out.
I am using setcpu to underclock my phone while the display is off. I unplug at around 8 AM, and I can get to 1 or 2 pm with 98-99% of my battery remaining with no use. I went to sleep last night around 12 with 29% left, and I woke up at around 9 with about 27% left. I should also add that I spent a pretty solid amount of time yesterday browsing the internet and playing angry birds, so I was pretty pumped to have that kind of battery left at the end of the day.
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what's weird is I could play a game a lot, or do something considered heavy use and I really wouldn't get a ton of battery drain. It would drain a lot when I seemingly wouldn't do anything.
I too have setCPU profiles, and had to use JuiceDefender to even make it to the evening with light use.
I've had 4 different Android phones now, this was the only one that acted like this (all were battery hogs, but nothing on this level...Droid, N1, Vibrant, MT4G)
as far as waiting on CM7.....I didn't see any reason to wait. Everything seems to work very great with the newest builds and I don't really have many/any issues.
Was worth the switch for me to fix the battery issues with the stock I was having.
I STILL think it had to be a wake issue...ie, the phone waking a bunch during the night and turning the screen on/processes on. I haven't noticed CM7 randomly wake my phone once since I changed.
of course, it could be something kernel related too
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.
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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?
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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?
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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......
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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.
I have had my HOX for a week now and the battery is still pretty bad. Using yesterday I was at 73% when I started listening to Pandora and within 30-40 mins it dropped down to 35%.
Last night, I put it on my nightstand when I went to bed at 85% (screen off none of my apps running) and I couldnt even turn it on this morning...totally drained.
I've been trying to keep an eye on the battery usage but nothing out of the ordinary is running taking up the juice. I leave Blue Tooth and GPS off most all the time. Sync is not enabled and the screen never goes more than 50% brightness.
I'll try to get a screenshot of battery usage next time prior to it draining.
I read it can take a couple weeks to get the battery in shape, but should it still be like this after a week?
Thanks.
Something is wrong with your phone. Either you have an app running in the background or your battery is bunk. Return that phone! I get a good day out of the phone with 2.5hrs of screen on time. Good luck
Could you give us a list of installed apps?
Sent from my HTC One X using XDA
I went to bed last night at 10p (started the day at 5am) with 62% battery left with light/moderate usage. WIN. Good or bad, it destroys my galaxy nexus I had (VZN) gotten used to over the 6 months ive had it.
Ever since the Kit Kat update -- my battery life has been bad.
I used to be able to get almost 2 whole days on one charge - I loved it.
Now I'm lucky to get about 12 hours and be at 20-30%.
The last week or so, my phone gets incredibly hot near the top 1/3 of the device - front and back. The battery life is abysmal. I can be from 100% to 20% in a few hours. ON top of that, it's charging REALLY slowly. I plugged in last night when I was down to 5% and was browsing the web and the battery actually went to 0% and shut off. That was the first time it's done that. I let it charge and it got up to about 80% by 6am this morning.
What's up with this thing? I am doing a backup now to do a hard reset. But I'm afraid if I restore the backup whatever is happening will just happen again. Any suggestions?
Side note - I ran it in safe mode yesterday and went from 8am to 4pm using only 15%!!!
My wife has had the P20 from the week it was released in the UK. The battery life has been really poor, she is what I would consider a light user on a 4GB contract which she rarely troubles and with a tablet for use at home. She has taken to carrying a portable charger with her to make sure she got through the day. I had checked for any obvious drains, even turning off bluetooth, gps etc. But from a full charge in the morning, she would struggle to have any battery left by the evening, compared to me (a slightly heavier user) having about 40-50% left on my Samsung S9.
However at some point in the last week something has changed, she is suddenly going to bed with about 60-70% battery left.
Anyone else had similar? Has there been a significant update recently (to either the phone software or some other app)?
Craig
My mate 10 after a few updates, i actually use my phone to work, work 8 am to 6 pm get home and i forgot to charge the phone last night, woke up with 72% battery and was wondering if i should bother charging.
I think it has to do with the npu
I experienced the same after the last update. Before the update it would not last more than 4h sot with 1h voice calls. Now i can get 5h sot with 1.5h voice calls and still have like 30% remaining.
i have experienced increased temperature heat. dont know what is causing it.
Same here! But I just noticed it last night before going to bed (had it on full charge), woke up 8 hrs later and the battery only drained by 1% (only Wifi is on). Not even sure if the update was even downloaded without me knowing. But before this the battery for me was performing quite well, coming home in the evening with still 40-50% left.