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Is it normal for my battery to only last 1 day before it needs a charge? I have everything turned off practically and yet I still have it dying after 1 day. According to Battery usage, the only things draining it are the Display and Cell Standby. Any information on this would be greatly appreciated.
Ryphez
That's about the battery life I get. With light to moderate usage, it lasts about 15 hours before getting down to 20%
I'm in a fringe area and get most of a work day with moderate email, data, and constant music
SS
Sent from my DROIDX using XDA App
Same here...11-13 hours is a pretty good stretch for me.
Biggest culprits for battery drain are display and automatic data syncing.
So if you want to extend your battery life lower the brightness on your display.
So for syncing you can either disable it completely so that your applications only refresh for new data when you use them or change the frequency that they check.
I'm getting about the same. Actually I was pretty happy considering all this thing does. Keep an eye out for the extended battery. It's gonna make it thicker but might be a good tradeoff for some of us.
Sent from my DROIDX using XDA App
My battery only lasted around 6 hours, so I'm getting a replacement.
I'm with you guys about the battery issue. I mean I know that Android is known to have bad battery life, but the X was heralded as supposedly having decent battery life.
Even with GPS and wifi turned OFF, and my display brightness turned all the way down to 0, I am still only getting about 10-12 hrs of usage. That's BS.
Overall I really like the phone, but the battery issue is getting on my nerves - as well as the damn wifi issue.
I doubt it's going to matter, but I can only hope that Froyo offers up better battery life (maybe more options to turn stuff off). I would love to be able to underclock the CPU or reduce the screen brightness even more.
I am coming from a blackberry that got two days on a charge. The phone sucked though. I get about 13-15 hours per charge on stock battery. I use tasker and y5 to set profiles that toggle wifi and gps so I'm never using extra battery but still able to use device to fullest. I also went on ebay and found two generic batteries with external charger for $13. Now when my stock battery dies, I just throw in a new one that freshly charged and charge up the stock one. Having three batteries to shuffle through means my phone is never plugged in, and never dead. Plus in not charging batteries as often so it should extend over all life of batteries.
Sent from my DROIDX using XDA App
How does the battery life compare to the original Droid(stock of course)? Do you guys think the Droid 2 will have similar battery life, or will Froyo and the smaller screen improve it?
I only get around 7 hours when im forum browsing 7 hrs straight
Sent from my DROIDX using Tapatalk
I've noticed the 50% bug on several x's including my own
If i don't use my phone a lot i get 10+ hours easy
But you gotta remember if you're using this phone all out and a lot then of course you're gonna use the battery up quicker.
Sent from my DROIDX using Tapatalk
Seems to be a bug with the gps. That is causing the battery drains. Even after you shut down the program using gps system won't go into a complete Sleep mode seems to be a big study going on over droidforum.net tested mine today with gps off except when in use battery lated 20 hours versus 10 with it on.
Not real technical myself and don't wanna post link to another forum.
Good luck fyi motorola is aware of bug and suppose to be a fix in 2.2
Sent from my DROIDX using XDA App
I use the widget "Extended Controls" and leave my WiFi, GPS, Bluetooth, etc off unless I need them.
I had the SGS Captivate for three weeks and before that I had the G1 since it came out - the DroidX battery life is longer than both of them.
I'm really happy with the battery life so far.
Also, I read somewhere that it can take a few full drain/full charge cycles to get the most out of your battery. Both myself and my wife completely drained and then completely charged our batteries within the first two days.
I've had the DInc, eris, droid, and nexus one, i couldn't put into words how much better the battery is on my x. I mean its nothing like a dumbphone. But this thing packs as much punch as some older laptops so i don't expect a lot out of the battery. Check ur apps, sometimes u get ****ty" rogue" apps that screw it up, and if u use a task manager only kill intense apps like web or messages or gmail. The other processes are need to make the phone run correctly, i know i've seen better performance and battery life since i stopped using one.
sent from Shawn Micheals...The heartbreak Kid
I leave everything on wifi, gps, auto brightness, blue tooth, and im getting the best battery life of any phone i have ever owned, even better than my nexus one . My sister has a Droid X, and all she does is complain about her battery life. Although she is coming from a blackberry, i think that most people expect more from the battery than it can physically give, if you wonder about how long it lasts just take a look at the screen, and realize it takes alot of juice to run this huge beast .
Sent from my DROIDX using XDA App
xmunk said:
I've noticed the 50% bug on several x's including my own
Click to expand...
Click to collapse
I had never heard of this before so I did some research and my X was doubling the time on in Cell Standby and showing 50% used. I was getting 12 - 13 hours of battery life. I did the airplane mode cycle trick and now I'm getting 24+ hours of battery life. And now Cell Standby displays normally. Amazing.
A big thanks to xmunk as that was the only thing that was driving me nuts about the X and I was thinking about getting a replacement. Now the battery life is great!
I would recommend anyone having poor battery life check to see what Cell Standby is reporting.
Oh wow.... Im showing since unplugging my phone 3hr 54m ago I've used the following for power:
51% Display
38% Cell Standby
12% Phone Idle
I just cycled Airplane mode and will checkout what happens next.
That a ton of power being used for standby. My Nexus one used 1-2% per hour while not in use and on standby. Battery left is estimating my battery is at 76% right now with a system % of 80% showing.
I hope this gets looked into.
gchglobal said:
I had never heard of this before so I did some research and my X was doubling the time on in Cell Standby and showing 50% used. I was getting 12 - 13 hours of battery life. I did the airplane mode cycle trick and now I'm getting 24+ hours of battery life. And now Cell Standby displays normally. Amazing.
A big thanks to xmunk as that was the only thing that was driving me nuts about the X and I was thinking about getting a replacement. Now the battery life is great!
I would recommend anyone having poor battery life check to see what Cell Standby is reporting.
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Well- since you guys have already done all the work -would you mind maybe sharing a few links?
-thanks if you can.
I just want to know what I can do to improve my battery on CM7 nightly 32. I'm at 21 hours now and almost dead. Yet I see people get stuff like 2 days and 10 hours... I have tasker and the only profile I have is when the screen goes off it turns mobile data off (not sure If it works so I also use apndroid). I NEVER use wifi, bluetooth, or high brightness. I do however have gps on so in case I lose my phone is lost or stolen I can track it. So there's no way I'm disabling that. I have tried juice defender but figured since it can't effectively disable data for 2.3.3 I saw no point in the app. Any tips?
Sent from my HTC Vision using XDA Premium App
Sorry for the typos, I'm half asleep and there's no editing option in the xda app... atleast add it to the premium version!
Sent from my HTC Vision using XDA Premium App
21 hours on moderate use is great battery life. 12 hours is usually the measuring stick for smartphones, less is bad, greater is good.
Don't know who you saw getting two days plus, but they are either not touching their phone or have an extended battery.
Sent from my T-Mobile G2
Best way to extend battery life is to get an extended or high capacity battery. I just got the Mugen Power pack, not the chunky one, and im in the process of breaking it in.
On my stock battery i was getting about 17hrs of moderate use. Almost no talk but alot of texting, engadget and youtube mostly on wifi with gps always on. That might give you an idea, plus, there are countless battery related threads on here.
Will post back in afew days after my Mugen has cycled afew times.
Sent from my Virtuous Desire Z 1.0.1 using XDA App
I have 4 stock replacement batterys and never plug my phone in to the charger. When my phone is at about 5% i just take one out and pop the next one in and charge them in the wall... I know its not the answer you want but I never have a problem with battery life lol
I would agree that 21 hours is great battery life on this phone. I can get a week of battery life on my phone if I put it in airplane mode and stick it in my desk drawer =P
Not sure how big of an impact the tasker profile has. Unless your screen is off for long periods of time I would think that it might harm the battery life because every time you touch the device, it has to 'search' and connect to the tower again.
You can try running the phone at the stock CPU speed to see if that has an improvement on your battery life. I currently run the same 1017/245 as you with a screen off profile set at 245/245.
For me, as long as I can make it through a day's use, the battery life is fine. With moderate use I can go about 15-18 hours and heavy use I'm at around 12. The car charger in those cases is a life saver.
Bottom line is, battery life really depends on your usage habits. Those people getting days out of their phones likely aren't using them very much...
well i have setcpu set at 806 max and 245 min. screen off is at 245/245 and on powersave governor. other then that its on ondemand. i also have profile set to reduce the CPU based on battery. I have it set to <101% its at 806/245 , <41% its at 768/245 and less then 25 is 368/245. i realize that these are low speed but i hardly ever get lag and i use it for everything, music, video, youtube, internet, twitter, facebook, xda , and a here and there gmail. i guess if im getting exceptional battery life... anyone want some tips?
I find the more variation I put into profiles on setcpu, the worse my battery life gets. Theory - it is constantly watching and making changes based on your CPU needs and battery. So I have mine set to 1113-1113 performance, 245-245 powersave screen off, 245-245 powersave 45degrees+ and for your mobile data, try just having a widget to turn it on and off as you need it. You probably don't need it on everytime you turn on your screen do you?
Sent from my SilverBullet "HTCDesireZ running CM7"
The apndroid widget eventually gets out of sync with on/off with the data... I think its gingerbread. Most apps can't effectively turn the radio off. I hope they make one soon!
Sent from my HTC Vision using XDA Premium App
I find the stock battery to be not that great. I bought the Chichi batteries way back in October (when they were still considered cheap) and theyve been great. I havent really done any new tests since October, but back then (before I had a data plan) I was getting atleast a day and more (from 100% to dead) with moderate usage.
I'd look for a high capacity battery, though they seem to be expensive now.
Kevin001111 said:
The apndroid widget eventually gets out of sync with on/off with the data... I think its gingerbread. Most apps can't effectively turn the radio off. I hope they make one soon!
Sent from my HTC Vision using XDA Premium App
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Click to collapse
The power bar widget that comes with cm7 works perfect for me. Turns onoff Wi-Fi/apn/GPS/brightness/airplanemode
Sent from my SilverBullet "HTCDesireZ running CM7"
I just tested out my battery the other day. I got a day and 13 hours and I was at 19 percent. Wifi is a big battery killer, and brightness is too.
Sent from my HTC Vision using XDA App
Ill post a battery success story...sounds nerdy lol. And i live at my own home with my own family lol.
My mothers g2 is rooted and running cm7 nightly 29 or 30, I installed it last week. I asked her today for the first time how the battery was after a week. She is using an aftermarket 1800mah battery, wifi only at home, she was almost at 32 hours and had 39% battery left!!!!
Not sure of all settings but i put it on 1113mhz, on demand with min 368, autobacklight, wifi only at home, bluetooth is always connected and on. Talk is about 70% of her usage overall. 4 gmail accounts. I did not install set cpu at all. I even stopped it on my phone because it didnt help me one bit.
Not too shabby. I was at 57% with some texting but a lot of gps usage for latitude and wifi always on even when not at home.
sent from the rooty tooty fresh and fruity cm7 nighly powered G2
here is what i get out of a day (battery consumption for specific tasks are mentioned in percentages measured using juiceplotter)
wifi on constantly
display set to 24% brightness
background sync enabled (google, weather 6hrs, whatsapp and facebook once a day)
45 min video (rockplayer no h/w decoding) 15%
1 hr browsing+chat 15%
30 min calls 6%
20 min music+chat 5%
20 min general usage 5%
1 hr flash streaming 15%
24 hrs standby 24% (@ 1% for every hr of standby)
15% battery remaining after 24 hrs i.e. low battery warning.
i disabled the use wireless network option under locations and always on mobile data
and get much better battery life, also i use wifi constantly when available (which is 90% of the time), it is much better for battery life than using 3g or gprs/edge.
pretty amazing battery life IMO i am very happy.
So i have cycled my Mugen 1800mA battery acouple times. on average, i'm able to get about 27hrs of heavy use. Here are some settings as a baseline:
Always on Data
Wifi always on
Auto brightness
1GHz clock speed
massive amounts of text use
massive amounts of screen on time
will report back in afew days time after some more cycles.
I have had my Note for 9 days now and wonder if my battery may have an issue. Yes the phone is entering deep sleep, No I don't have any specific app that is running it dry. Screen takes most of the juice. I have it set at automatic brightness. Everything is off. It does auto sync. Signal is fantastic. I can hardly get 3/4ths of a day. I usually spend 30 minutes on the phone. 30 emails, 2 hours browsing, 30 minutes on tapatalk. This has always been my pattern and coming from a Motorola photon I always made the day easily. I'm on ISC (stock) not rooted just plain old stock. I'm thinking maybe a battery problem? What do you all think? Thanks for your help.
Sent from my GT-N7000 using Tapatalk 2
swid441 said:
I have had my Note for 9 days now and wonder if my battery may have an issue. Yes the phone is entering deep sleep, No I don't have any specific app that is running it dry. Screen takes most of the juice. I have it set at automatic brightness. Everything is off. It does auto sync. Signal is fantastic. I can hardly get 3/4ths of a day. I usually spend 30 minutes on the phone. 30 emails, 2 hours browsing, 30 minutes on tapatalk. This has always been my pattern and coming from a Motorola photon I always made the day easily. I'm on ISC (stock) not rooted just plain old stock. I'm thinking maybe a battery problem? What do you all think? Thanks for your help.
Sent from my GT-N7000 using Tapatalk 2
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Click to collapse
I've only had my note a couple days. I've gotten about 10-12 hours out of it both days. But that was with what I would call moderate to less then moderate usage. A little web browsing and facebook, probably less then 2 hours total. Maybe 20-30 texts and reading emails for maybe 30 minutes and 10-15 minutes of calls. I'm not sure what to expect, I am coming from a rooted HTC evo which I ran a lot of custom roms/kernels on, so I got great battery life with it. But I don't remember how it performed stock. The Note gets me through my work day, but not much more.
Charge the battery to full.
Let it drain completely (till it turns itself off).
Charge the battery to full once more.
I don't know the science behind it, nor does everyone benefit from doing this. (Something to do with calibration of the battery) but I do this after every major update, or new phone. I'm currently sat on 44% battery after 24hours usage (Moderate, certainly not heavy usage).
You have to remember the note will consume a large amount of battery simply because of its screen size (As you've noted its the biggest offender).
Someone with more experience/knowledge will hopefully be along shortly to give you better more informed advice but this is what I know from experience.
Normally what I have seen is I get approx near
4 hours of battery life (screen on time)
Sent from my GT-N7000 using xda premium
Batterylife on samsung ics (XXLPY) is terrible if you compare it to gingerbread. It is nearly cut down in half. I guess touchwizz has gotten more hungry than before or samsung has altered ics so much that the advantages are gone.
davexeno said:
Charge the battery to full.
Let it drain completely (till it turns itself off).
Charge the battery to full once more.
I don't know the science behind it, nor does everyone benefit from doing this. (Something to do with calibration of the battery) but I do this after every major update, or new phone. I'm currently sat on 44% battery after 24hours usage (Moderate, certainly not heavy usage).
You have to remember the note will consume a large amount of battery simply because of its screen size (As you've noted its the biggest offender).
Someone with more experience/knowledge will hopefully be along shortly to give you better more informed advice but this is what I know from experience.
Click to expand...
Click to collapse
I do this method every 2 or 3 months on all my devices (iPod, phone, Laptop) so that the percentage or battery shown on the devices is more accurate. I read somewhere that since most of us charge out devices before battery dies completely, like we charge it when its 80 or 60 or even 20 instead of charging it when it completely dies, doing so makes the accuracy of the percentage very low but we can't help it but to charge it at what ever percentage for various reason thus, I always drain all my battery on devices completely than charge it full before using (minus the first full charging). Any ways if your ICS it seems to be a bug, it cannot be fixed until a new update.
Sent from my GT-N7000 using xda premium
Do the charge/drain cycle.
I've done this and improved the battery life immensely.
Currently my note has been on for 3d 21h 16m 1s and has 11% charge left - okay so it hasn't been used much over the weekend but that not a bad standby time.
Yesterday we had a day grey in grey and I started my morning as usual with my SGN 10.1
Emailing, Newspaper reading, some drafting for my next lectures, updating apps and then I found some really funny cabaret streams .......
Well, my Note was constantly on and streaming YouTube and some other sources
What shall I tell You: just in time I went to bed it was down to 5%
14 hrs !
No other tab can beat THAT :laugh:
I found a quick way of gaining 5 hours battery per day: I bought my 5 yr old son a Galaxy Tab 2 (early xmas present). Now my note 10.1 lasts me all day, every day It even works with my phone, a Note 2
My note 10.1 has so far been running for 23 hours and 10 minutes and has 26% battery remaining. It's definitely on a par with my previous tablet, an ipad 3 :good:
Last week, took mine off the charger Sunday morning and didn't put it back till Friday night. I didn't use it much, just about 4 hours of screen time. Total time on battery was 134 hours 27 minutes. Still had 55% of the battery left. That standby time if phenomenal.
yeah my last charge was 5 hours 40 mins screen on time and more than 13 days standby. Battery was at 34%. It uses next to no power on standby, absolutely amazing.
Sent from my GT-N8013 using xda app-developers app
I use my Note 10.1 on two day cycles. I am in college and take all my notes with it. I can use the tablet as much as I want and I get two days of battery out of it.
I agree. I'm coming from Asus Transformer Infinity and SGN 10.1's battery is beyond belief. It seems like it's running on nuclear energy. Amazing for such a light tablet.
aydc said:
I agree. I'm coming from Asus Transformer Infinity and SGN 10.1's battery is beyond belief. It seems like it's running on nuclear energy. Amazing for such a light tablet.
Click to expand...
Click to collapse
tbh, it feels as though it runs down a bit quicker than my old transformer prime tf201...
idk though
My best:
Sent from my GT-N8010 using xda app-developers app
AndroHero said:
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Click to collapse
I win
Sent from my GT-N8010 using Tapatalk 2
guys why my screen always say it uses 75/80% when i look at battery usage ?
it makes my battery drain very fast
The amount of time your screen is on is the usage percentage shown eg if you tablet is on for 10 hours and out of that u were using it for 8 hours then the percentage would be 80
Screen is the biggest battery eater which is the case with any device so it effects your battery life the most
samir_a said:
The amount of time your screen is on is the usage percentage shown eg if you tablet is on for 10 hours and out of that u were using it for 8 hours then the percentage would be 80
Screen is the biggest battery eater which is the case with any device so it effects your battery life the most
Click to expand...
Click to collapse
thank you samir for fast respond :good:
samir_a said:
The amount of time your screen is on is the usage percentage shown eg if you tablet is on for 10 hours and out of that u were using it for 8 hours then the percentage would be 80
Screen is the biggest battery eater which is the case with any device so it effects your battery life the most
Click to expand...
Click to collapse
I think its what percentage of your battery it has used, not the screen uptime vs total uptime
Sent from my HTC Glacier running CM7
I got mine yesterday and charged it, hardly did anything with it except download and play a game for less than 10 minutes and have a little doodle with sketchbook pro then left it on standby over night then did a little browsing this morning.
Found the wifi to be slow and sluggish and wouldn't even show all images even though my broadband is 100mb speed.
The battery lasted 13 hours, don't know how long it would last if I'd actually used it a bit more cause it seemed to go down pretty fast even on wifi bout the same life as my s3.
Hardly call that phenomenal.
I'm really disappointed to be honest after reading all the reviews.
Sent from my GT-I9300 using xda premium
Samsungnooby said:
I got mine yesterday and charged it, hardly did anything with it except download and play a game for less than 10 minutes and have a little doodle with sketchbook pro then left it on standby over night then did a little browsing this morning.
Found the wifi to be slow and sluggish and wouldn't even show all images even though my broadband is 100mb speed.
The battery lasted 13 hours, don't know how long it would last if I'd actually used it a bit more cause it seemed to go down pretty fast even on wifi bout the same life as my s3.
Hardly call that phenomenal.
I'm really disappointed to be honest after reading all the reviews.
Sent from my GT-I9300 using xda premium
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Click to collapse
Somethings up with your device maybe........ive tested mine a few times, constant use, thats, from 100% untill the 5% warning, mostly browser and youtube......5min break here, 5min break there...........on average 10h MINIMUM of CONSTANT use.........if your dropping 13h without much use, then somethings up with your device and might be worth asking in the q&a thread for help
Are you using full brightness?
banderos101 said:
Somethings up with your device maybe........ive tested mine a few times, constant use, thats, from 100% untill the 5% warning, mostly browser and youtube......5min break here, 5min break there...........on average 10h MINIMUM of CONSTANT use.........if your dropping 13h without much use, then somethings up with your device and might be worth asking in the q&a thread for help
Are you using full brightness?
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Click to collapse
Probably just needed a full charge as I only charged it from half way as it came half charged and if that doesn't work I'll do a full discharge and if that doesn't work I'll send it back
Full brightness is too high for me and auto is too low so had it at less than half way.
Only really got it so could use it to take out with me and do some paintings but was worried about it switching off that's why not happy.
Thanks for your reply, really like this tablet and it really is what I thought it would be but if it hasn't got the battery then it's not good.
I'll see how it goes.
Sent from my GT-I9300 using xda premium
Make sure you set WiFi to turn off when the screen is off.
Odd though that the WiFi was slow. It makes me think something is wrong with the WiFi itself that's causing problems.
Samsungnooby said:
Probably just needed a full charge as I only charged it from half way as it came half charged and if that doesn't work I'll do a full discharge and if that doesn't work I'll send it back
Full brightness is too high for me and auto is too low so had it at less than half way.
Only really got it so could use it to take out with me and do some paintings but was worried about it switching off that's why not happy.
Thanks for your reply, really like this tablet and it really is what I thought it would be but if it hasn't got the battery then it's not good.
I'll see how it goes.
Sent from my GT-I9300 using xda premium
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Click to collapse
Personally, I've noticed that the s-pen digitiser, when it is switched on, drains a considerable amount of energy. So do not expect extreme battery life if you use a lot the s-pen. Anyway, do check that the energy saving option under "Options - S Pen" is ticked. This way the digitiser will be off when the stylus is in its receptacle. This will save a good amount of battery when you're not using the pen (provided you insert it in its receptacle). Of course, this setting will have no effect whatsoever while you're using the pen.
In any case, a tablet like this is full of features and components that are potential battery killers, so how long the battery lasts, it's really up to how the owner uses it, and not only how much. For instance, I may be surfing the internet and checking emails all day long without using the pen, and consider it heavy use. How long will the battery last in such case? 15 hours? Ok.
Now, a seemingly opposite case could be this: I may have the tablet constantly standing by, but with the pen off its receptacle. Since I have never used the tablet, I have full right to swear that my usage of the tablet is extremely light. Well, only because I've left the pen out of its receptacle, my battery will run flat in just about 13 hours or so. And what's more confusing, is that if I go checking the battery stats, I will see no trace of the pen being the responsible for such a high drain, so I probably will end up getting the (wrong) idea that the battery life of this tablet is extremely poor.
Another case, among the many, is when the tablet tries to sync using the 3G connection, but gets no answer from the network because of problems of the mobile operator network (server not responding). This causes the 3G radio to remain constantly on and drain the battery very fast. Again, it is very difficult to understand the reason for such a quick discharge. Such an issue happens in certain areas of my city with Vodafone, for instance. When I go to that areas, I have to take care to switch off 3G data connection, or else my battery will be empty in a matter of a few hours.
IMHO the problem is, that android os is very incomplete when it comes to providing information for analysing power consumption, and this has always been the cause of big confusion and frustration.
JuniorGG said:
Personally, I've noticed that the s-pen digitiser, when it is switched on, drains a considerable amount of energy. So do not expect extreme battery life if you use a lot the s-pen. Anyway, do check that the energy saving option under "Options - S Pen" is ticked. This way the digitiser will be off when the stylus is in its receptacle. This will save a good amount of battery when you're not using the pen (provided you insert it in its receptacle). Of course, this setting will have no effect whatsoever while you're using the pen.
In any case, a tablet like this is full of features and components that are potential battery killers, so how long the battery lasts, it's really up to how the owner uses it, and not only how much. For instance, I may be surfing the internet and checking emails all day long without using the pen, and consider it heavy use. How long will the battery last in such case? 15 hours? Ok.
Now, a seemingly opposite case could be this: I may have the tablet constantly standing by, but with the pen off its receptacle. Since I have never used the tablet, I have full right to swear that my usage of the tablet is extremely light. Well, only because I've left the pen out of its receptacle, my battery will run flat in just about 13 hours or so. And what's more confusing, is that if I go checking the battery stats, I will see no trace of the pen being the responsible for such a high drain, so I probably will end up getting the (wrong) idea that the battery life of this tablet is extremely poor.
Another case, among the many, is when the tablet tries to sync using the 3G connection, but gets no answer from the network because of problems of the mobile operator network (server not responding). This causes the 3G radio to remain constantly on and drain the battery very fast. Again, it is very difficult to understand the reason for such a quick discharge. Such an issue happens in certain areas of my city with Vodafone, for instance. When I go to that areas, I have to take care to switch off 3G data connection, or else my battery will be empty in a matter of a few hours.
IMHO the problem is, that android os is very incomplete when it comes to providing information for analysing power consumption, and this has always been the cause of big confusion and frustration.
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Click to collapse
Ah think that was it thanks had the battery saving in pen unticked, wasn't sure whether to tick it or not.
I only have the wifi as got 3g on my phone so don't need it.
Main purpose bought it for was the pen but now have that ticked when not using it should make a difference
Sent from my GT-I9300 using xda premium
Could you guys tell me if various ROMs have different battery life? Just to know if it's worth trying other ROMs or whether it would be a waste of time. (I already use a good kernel for battery life, i.e. M-Kernel.)
Sent from my Nexus 7 using xda premium
I have never had better battery life than I do now on stock rooted 4.2.2
I'm at 41 hours now with 2 1/4 hours screen time and battery is at 66 percent.
I know that's not a lot of screen time so far....but excellent sleeping! Very happy with stock!
Sent from my Nexus 7 using xda app-developers app
I'm currently using PA 3.1 and M-kernel a-37. I usually get between 35-40 hours (3-4 hours on screen time) with moderate usage (browsing, light gaming, occasional YouTube viewing) before needing to charge.
Currently as I'm typing this, my N7 is on 15%, been unplugged for 40 hours with on screen time of 3h12m.
I've managed to squeeze a week out of Paranoid Android 3.0 running Faux Kernel under clocked to around 800Ghz.
Just experiment like the rest of us.
Probably very little battery savings are attributable to the ROM, unless they've got apps pre-installed that hold lots of wakelock time and prevent the device from sleeping.
I throw mine on the charger as soon as I stop using it, so I don't really care what the battery life is. If I've used up 6 hours of screen time per day, that indicates a problem with the operator, not the device
Folks that have tilapia (3G/4G) N7s or live in a WiFi-everywhere (campus?) environment are probably more mobile with their devices than I, so no doubt their use-case scenario - and thus battery use concerns - are different. But I'm skeptical that ROM choice (independent of kernel choice) has much to do with it, unless a pre-installed app is pathological.
I agree with the above mostly, although underclocking does help a bit. I have 5hours of screen on time and 15 of sleep on 16% battery right now.