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First, the set up.
I have an Incredible running Skyraider 2.52 with the 2.6.32.15-adrynalyne kernel. I use SetCPU to set some rather aggressive battery preservation, chief among them being the profile that sets the CPU to 245mHz on screen off (using the Powersave scaling so as to eliminate CPU polling). I have Autokiller set to near absurd levels (the Ultimate preset). I even use Autorun Killer to disable some nonsense apps from starting at boot. Needless to say, battery is a priority.
Also, I should note that I am using the 1750 mah Seido battery.
This morning, I charged my phone to 100% (even a little beyond that, as I charged it with the phone off, but not until I hit the green). I unplugged the phone from my car charger at 9:20 AM. Wifi, Bluetooth, and mobile network were all off. I literally did not touch my phone for the next ten minutes, and yet...
By 9:30 AM, I was at 90%!
I quickly started up Froyo Task Killer, which allows me to force stop programs through Android's own task management. I closed several useless but likeable apps (like ONN and G4) and put my phone back in my pocket.
By 12:47 PM, after not touching the phone again, I was at 80%.
Clearly, you can see the difference in battery usage while otherwise in standby.
Is this a clear case for killing tasks, or is there something else at play? I know that task killers are a cause for serious debate, and 2.2 doesn't play nice with them, but this is a pretty weird case.
You're making an assumption that the battery discharge rate (or rather the displayed rate) is linear. In my experience, this is not the case.
You make an excellent point. However, in most ordinary circumstances, and certainly while running stock Eclair, I usually found that the first 10% battery drain took longer, certainly longer than 10 minutes.
Either way, 1% per hour is, all strange battery magic aside, pretty remarkable for a phone that is in standby with screen off in pocket. Especially when given the lengths I've gone to in attempts to extend said battery life.
once froyo hit i uninstalled my task killer.... haven't looked back since.
I currently run SystemPanel by NextApp.
It will prove to you that task killing is practically a placebo but I highly recommend it just to be aware of whats ACTUALLY killing your battery.
I use the stock battery and the OEM 1500mah. I am pretty happy with what I can get out of the extra capacity battery.
Try turning off 3G when you don't need it using the HTC widget.
If you can't stand the stock apps that always start up on your phone but don't want to delete them do as I did and get the full version of titanium backup (3.99) and freeze all the apps. Out will pretty much just like the name says, freeze the apps. You can then thaw them out when you need them.
I got almost 2 days up time and like 12 of those were up on the 1500 battery. Now I have the 2150 i am at 50 hours up and 10 hours awake with still 50 percent to go, that's first charge too, can't wait till it breaks in
Oh and I was reading somewhere that one of the roms has a problem like that. It might be the skyraider
Sent from my Incredible using tapatalk.
mihneagabriel said:
If you can't stand the stock apps that always start up on your phone but don't want to delete them do as I did and get the full version of titanium backup (3.99) and freeze all the apps. Out will pretty much just like the name says, freeze the apps. You can then thaw them out when you need them.
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Autostarts would probably be an easier way of doing this.
kensikora said:
You make an excellent point. However, in most ordinary circumstances, and certainly while running stock Eclair, I usually found that the first 10% battery drain took longer, certainly longer than 10 minutes.
Either way, 1% per hour is, all strange battery magic aside, pretty remarkable for a phone that is in standby with screen off in pocket. Especially when given the lengths I've gone to in attempts to extend said battery life.
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why would you bother having a smartphone if your intent is to leave it in the pocket? I get about 24+ hrs uptime one one charge (stock bat). Generally on WiFi, GPS, and Max Brightness for half of it.
Charge at work since I'm at my desk and no problems. Battery life is great, but if you don't want to use the phone in attempts to get max life, seems quite pointless to own such a powerful device.
Skyraider 3.1
You can go into battery info in the settings and see what is causing battery drain.
In my experience, most drain is when I'm inside a building with poor reception and my phone is on overdrive trying to find signal. Usually I turn on airplane mode and use WiFi if that's the case.
Sent from my ADR6300 using XDA App
Maybe its the kernel. Also I would stop killing the apps, not to save battery but because since they were stopped by the user, the Android system might start them up again almost instantaneously. But this depends on core processes and weather Android is done processing any info or other stuff from that app.
Sent from my ADR6300 using XDA App
MMBosstones86 said:
why would you bother having a smartphone if your intent is to leave it in the pocket?
Skyraider 3.1
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I am not aiming for battery life alone, but I like to leave work and not need to recharge for an hour before I head out. I leave it in my pocket at work because, well, I'm at work. Although I do usually get in a few levels of Angry Birds or Shoot U.
The question is, how can I minimize battery use when my phone is idle so that I have the battery to screw around with it when I want to or have time.
Sent from my ADR6300 using XDA App
mihneagabriel said:
If you can't stand the stock apps that always start up on your phone but don't want to delete them do as I did and get the full version of titanium backup (3.99) and freeze all the apps.
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I never knew what that did. I knew the feature existed, but hadn't bothered looking into it. I already bought the full version for totally hands-free installs, so I guess I can now take care of Peep and Flickr.
sl0wd0wn said:
Autostarts would probably be an easier way of doing this.
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I had never heard of Autostarts. I seem to find that any apps that aim to disable startup entries always fail to list the apps I am most interested in blocking, but for 90 cents, I am definitely willing to give it a shot.
Edit: I haven't had a chance to determine its effect on battery life, but Autostarts is brilliant. It makes so much more sense to actually change startup entries than to try and stop a task after it starts. I also was unaware of how many events trigger apps to start. That is one powerful app.
Sent from my ADR6300 using XDA App
The 10% drop at the beginning has nothing to do with apps or task killing. It's a bug, the battery isn't telling the software the correct percentage it is at. Killing apps won't do anything to fix it.
If you want to 'fix' it, do a bump charge. Turn off your phone when it hits green, keep it charging till it hits green again.
I've read a lot of posts complaining about battery life, and other posts about users suggesting ways to improve battery life. I've read stuff like, disable LED, haptic feedback, lower volume, lower brightness, LTE turned off, underclocking, turning off sync, live wallpapers, etc, etc. To me a lot of people are crippling their phones. If your battery can last you 10 hours, that's enough because you'll probably be somewhere you can plug in. What's the point of being able to go for 20 hours when you'll probably have the opportunity to charge it before then? It's better to have and enjoy all the features.
Maybe somebody can chime in and give me their point of view.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
I agree. I would never want to sacrifice a feature just to extend the phone's battery life. Instead I use a custom rom that has all the features (and more) and 12 to 18 hours of battery life.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Part of the issue is a sociological thinking pattern between wanting "more" and needing it. Depending upon the type of lifestyle you live, sometimes, battery life is of dire importance to have if you're constantly migrating around. But I agree, some people who aren't in that sort of disposition go overboard with it.
I just bought a bigger battery :good:
I agree wholeheartedly. If your battery is lasting you through your day (which mine does, and more) then why try to conserve it?
Yea its funny stuff people complain their battery only lasts 20 hrs but yet they want it to be able to do everything a computer can do and more....
Sent from my SGH-I747M using xda premium
The only conscious effort i made to extend my battery life was to undervolt the CPU a bit, but this was more for the lower temperature advantages with extra battery life being an added bonus. Beyond that i turned off things i dont use like BT, no need having something running that i have no use for. Overall i was happy with the stock battery except for any kind of heavy video or game usage which drains it pretty quick - solution : bigger F'n battery :highfive:
i agree that some people seem a bit obsessive about it. but we shouldn give bad battery life a pass either. hopefully we will see some sort of advancement in batteries to have better battery life while keeping them at a decent size.
i was kinda worried id have horrible battery life with the S3 being that its LTE. my last LTE phone was so bad it would die after 8 hours idle.
Aftcomet said:
I've read a lot of posts complaining about battery life, and other posts about users suggesting ways to improve battery life. I've read stuff like, disable LED, haptic feedback, lower volume, lower brightness, LTE turned off, underclocking, turning off sync, live wallpapers, etc, etc. To me a lot of people are crippling their phones. If your battery can last you 10 hours, that's enough because you'll probably be somewhere you can plug in. What's the point of being able to go for 20 hours when you'll probably have the opportunity to charge it before then? It's better to have and enjoy all the features.
Maybe somebody can chime in and give me their point of view.
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I keep the brightness to the lowest setting anyway, but I do all of this because I go to school fairly far from my home, and I'd like to be able to play games on my phone without wasting 5% battery every 15 minutes. I haven't switched power saving off since I bought the phone.
Stock ICS on my S3
I bought the extended battery because I like playing games from time to time and I don't want tl have to worry about my phone dropping 15% after playing something for 5 minutes. Like someone else said earlier. It really depends on the kind of lifestyle you live. I for one don't mind having the extended battery on my phone but I do miss how light it used to be.
Sent from my SAMSUNG-SGH-I747 using xda premium
Naldonnis said:
I bought the extended battery because I like playing games from time to time and I don't want tl have to worry about my phone dropping 15% after playing something for 5 minutes. Like someone else said earlier. It really depends on the kind of lifestyle you live. I for one don't mind having the extended battery on my phone but I do miss how light it used to be.
Sent from my SAMSUNG-SGH-I747 using xda premium
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How heavy is it? Does it fit in a case?
For me, and I want as much battery life as possible to avoid those situations where there is no way to charge you phone even if that only happens 1 a month or less.. As a parent I can't just let my phone die on me... I always need enough to be able to take or make that important calls/text. My goal is to have at least 20-30 hours of battery life per charge.
I think the only major feature I've given up is live wall paper. Other then that, it is just disabling other unused apps like gtalk, talkback, Google bookmarked sync. As well I've uv my phone as much as I can and run a 1350 max clock speed. I really don't see any major dip in performance as long as you do it right . I do use Tasker to disable syncing globally when the screen is off and make sure it automatically disable bluetooth after 10 mins once it disconnect. Also I have the Y5 app to automatically toggle wifi based off my network location. The most useful battery saver I've found is to set my wifi to only connect when the screen is on. Seems kind of backwards but it works well when very little data is process during idle rather the the phone requiring to keep a constant connection to wifi.
Sent from my SGH-I747 using xda premium
I'm also one of those people that closes an app as soon as I'm done with it. Use an app, press the home button, release and hold home, swipe the app away, sigh in relief. An old habit carried from my S2 Skyrocket, where getting 8 hours on stock was above average.
Stock ICS on my S3
sly-tendencies said:
I'm also one of those people that closes an app as soon as I'm done with it. Use an app, press the home button, release and hold home, swipe the app away, sigh in relief. An old habit carried from my S2 Skyrocket, where getting 8 hours on stock was above average.
Stock ICS on my S3
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Click to collapse
I know that feel, I was on an LG nitro HD.
Sent from my SAMSUNG-SGH-I747 using xda premium
I have my screen brightness at 40-50 auto off.. i cant imagine turning it all the way down like alot of people say.. even when auto brightness is on it look very dull and dark at night to me.. Same thing for my tv with auto brightness.. but i still get good battery life. I am fully charged at about 6pm i use it till bedtime and use it for my alarm.. get up 4 am and when i get home at 2pm its still over 40%.. only thing i do is close all my running apps by holding home button a few times a day and same with ram
I work in an office so it's plugged in for the 2 hours before I leave so I have everything on full most of the day (brightness, lte...). Also, by undervolting I'm getting 30% more battery.
I think tips on increasing battery life like turning off lte and brightness are for people who can't plug in throughout the day or for emergency situations when you want to get the most out of your phone because there's some reason you can't charge.
Sent from my SGH-I747 using xda app-developers app
I get anywhere from 12 - 23 hours depending on whether I'm at work or off. I can live with that...but there are situations where being unreachable poses a problem.
So, to deal with my phone addiction, I got an original replacement battery. Always have it charged and on me. When the phone shuts down, pop in the replacement and your done. About a minute without a phone. This way I don't have to UV, worry about brightness, WiFi, Bluetooth, etc...
I can't deal with the bulk of an extended battery.
sent from my SIII i747
derberts said:
I work in an office so it's plugged in for the 2 hours before I leave so I have everything on full most of the day (brightness, lte...). Also, by undervolting I'm getting 30% more battery.
I think tips on increasing battery life like turning off lte and brightness are for people who can't plug in throughout the day or for emergency situations when you want to get the most out of your phone because there's some reason you can't charge.
Sent from my SGH-I747 using xda app-developers app
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30% more battery by simply undervolting? I think that's quite an overstretched statement. How is that even possible?
Aftcomet said:
30% more battery by simply undervolting? I think that's quite an overstretched statement. How is that even possible?
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Its not possible. Not by solely UVing. The sole purpose of undervolting is so that your phone dosent overheat when running high clock speeds. Saving battery is just a perk. You might save a few percent with the undervolt but nowhere around 30%. But don't take my word for it.....
>>>> http://forum.xda-developers.com/showthread.php?p=33282284
I noticed my battery life is terrible. My phone is only like 5 weeks old. I've tried the battery saver apps, power-saving, and pretty much every other tip. I start off with 100% in the morning with brightness turned down and everything else and I mainly listen to music more than anything so the screen is usually turned off. It still manages to go from 100% at 7:30 to about 17% at about 4:30. And the phone is turned off for about 3 of those hours. Also the other day I started playing TDKRw/100% battery life at 7:30 on high brightness and power saving was off. At 10:00 the battery life was at 15% not to mention I paused the game a lot. Is this normal at all?
Seems ODD. My phone is like that as well but one thing that i noticed is turning off cellphone data. that helps battery life big time. try that and see how it goes.
The TDKR, would be normal, the high end games just gobble up power, often even consuming more power then a charger can keep up with.
Sent from my SGH-T999 using xda app-developers app
Have you read through the thread Woodrube posted today?
Lots of good info that may help you out a bit.
http://forum.xda-developers.com/showthread.php?t=1969741
Sent from my SGH-T999 using xda app-developers app
I was like that when I bought my phone, but after playing around with some ROMs and kernels, I found what's working for me - ParanoidAndroid + Ktoonsez kernel = 2 days moderate use and over 5 hours screen time with 100mV undervolt
OP might have bad reception too, that'll eat your battery up
Reception is a killer battery eater.
Especially for me, just moderate texting and some short phone calls will drain my battery.
It's because where I live, the signals are fairly weak and I will get EDGE or 3G data most of the time.
Additionally, check your wakelocks. Sometimes applications run during when the phone is supposed to be asleep. Getting a handy battery measuring app will help.
Also try turning off sync or turning your settings for e-mail, google services, etc. to manual so they won't run when you're not using the device.
Otherwise, the forums probably have dozens of posts with tips on increasing your battery life.
There are many battery threads, true. But as of a day or two ago, you only need one!
Woodrube ported his thread over for us. I highly recommend evrryone take a few min to read it!
http://forum.xda-developers.com/showthread.php?t=1969741
For those of you with poor signal and wind up on Edge, turn on wifi if possible. It uses less power than your data connection, plus, by having it on it disables mobile data leaving only the voice connection which is much easier to get a strong signal for. So in every way this could help with battery savings.
Even if you have a great signal, your wifi will still use less power. I always connect to eofi when I'm able and the sleep policy is set to always stay connected. If you set it to disable while asleep it simply will activate mobile data in its place.
Sent from my SGH-T999 using xda app-developers app
Sorry for the slow response. Haven't had time to get on here. Thanks for all the help though. I was mainly scared though because I heard some of the phones had a bug in them to where it drains the battery life like crazy. I think that woodrube thread will help me tremendously.
khoikn said:
Reception is a killer battery eater.
Especially for me, just moderate texting and some short phone calls will drain my battery.
It's because where I live, the signals are fairly weak and I will get EDGE or 3G data most of the time.
Additionally, check your wakelocks. Sometimes applications run during when the phone is supposed to be asleep. Getting a handy battery measuring app will help.
Also try turning off sync or turning your settings for e-mail, google services, etc. to manual so they won't run when you're not using the device.
Otherwise, the forums probably have dozens of posts with tips on increasing your battery life.
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The only thing about that is, I barely make phone calls or text at all. Like I might text 3 times day and make calls like 3 times a week.
Does anyone have any tips on listening to music. I use PowerAmp and I probably use my phone mostly for music.
ThaGreatest said:
Does anyone have any tips on listening to music. I use PowerAmp and I probably use my phone mostly for music.
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I use TTPOD to listen to music,its free for the full edition and has great equalizer....
I hate to be the guy that asks this, but I just want to make sure as from what I understand this is different from phone to phone. From what I understand, Li-Ion batteries, like the GN2's, do not have a memory effect of any kind? And thus all battery calibration rituals and nonsense are entirely pointless for this handset?
The reason I ask is because I wasn't able to charge the device to 100% before use like I was always told to do with new phones. My device was turned on and used until it drained to around 10% at which point it was charged to 100%.
Now, after 2 weeks of use, I feel that my battery is not as good as it should be. I'm barely able to get more that 12 hours. I'd be happy to post some battery graphs in the morning.
One last thing, if I did mess up my battery, or if my battery is messed up or less functional than it should be, would buying a new battery fix all my problems?
Youvare right. All that calibration stuff is nonsense.
I have never charged my phone to full before using and draining the battery and my phone still lasts all day on mostly heavy use.
Could you post your batt stats?
Sent from my GT-N7100 using xda premium
Today I ran my phone with the "lowest" possible settings, that is lowest brightness, CPU power saving, and no haptic feedback. I did not turn off wifi. Doing this I was able to get a surprising 16 hours, although you can see from the graph that I didn't use my phone as much. Attached I have a screenshot of what it's like with the highest possible settings (no power saving stuff, and brightness all the way up, but no GPS). Sorry I don't have a pic of the percentages for the high settings, I never thought to do that.
What concerns me the most is this: even with the lowest settings, I'm only getting 2 hours screen time. (last pic)
What's interesting is that you would think that if I'm getting such poor screen time, there would be something else using a lot of battery, but there isn't. This led me to believe the problem was with the battery. I discovered a pretty big scratch on my screen the other day, and I have some monthly insurance plan from best buy, so I was thinking of just getting a new one. The longer I wait to get a new one, the harder it will be to set up everything again. lol
I noticed that compared to other GN2s, mine seems to wake up a lot when the screen isn't on. The awake periods tend to correspond with drops in battery and also when I have a poor signal. Could this be caused by my phone trying to look for signal and using battery?
Yes poor signal that results in the phone searching for better 3g/2g will drain the batteey faster.
Can you try using it in airplane mode with wifi only for a day and see how that goes?
Also install Better Battery Stats and after a day or so of normal usage check your partial unlocks to see if a rogue app is preventing deep sleep and sucking your juice.
Sent from my Nexus One using xda app-developers app
Yeah it us definitely your signal playing a role. Also you have a lot of wakelocks showing up
Sent from my GT-N7100 using xda premium
Dude you have major wakelocks that eat up 80 % of your battery!
Go to application manager and remove all the apps you don't use.
K, I agree with my week signal using battery. I only have 75 apps on my phone and they're all pretty mainstream, no obscure apps. Right now im in school with 86% battery, I'm turning on airplane mode now. I have noticed however that when I clear my ram it closes like 50-60 processes each time. I am always closing my apps, but 50 seems extremely high. im gonna turn on airplane mode and see how that goes...
thanks!
Yes, you do have poor signal but that's not all. You have terrible wakelocks pal. Install BBS and monitor which apps are the culprit. It's not about 75 apps, even 2 or 3 bad apps, which have hidden advertisement going on could suck your battery flat in no time.
So first thing, install BBS. 2h screen on time is horrible!
Btw- If you're on 3G, try to switch to 2G. Difference will be unthinkable.
Sent from my GT-N7100
Thanks everyone! I'm really loaded with school work, so I don't have a lot of time right now. But long story short, airplane mode saves my battery like crazy. I started school with 86%, turned on airplane mode, and I'm at 79% right now! more later
Is it safe to say I fixed it?
3h screen over 2 days isnt bad right? Perhaps just a bit worse than what others are getting?
Sent from my SCH-I605 using xda app-developers app
My wife and I have this phone. A few weeks ago I installed Juice Defender (free) on mine and so far it's working remarkably well. Last night I installed it on my wife's phone and the battery level dropped precipitously. She wasn't using the phone much (if at all) and eventually plugged it in to charge it up. After fully charging, the phone wasn't used - overnight it just sat on the kitchen counter and the battery went from 100% to 17%. Never had this problem with my phone and can't figure out what the deal is. Does Juice Defender have a weird reaction under certain settings or installed apps that I don't know about?
Colonel Travis said:
My wife and I have this phone. A few weeks ago I installed Juice Defender (free) on mine and so far it's working remarkably well. Last night I installed it on my wife's phone and the battery level dropped precipitously. She wasn't using the phone much (if at all) and eventually plugged it in to charge it up. After fully charging, the phone wasn't used - overnight it just sat on the kitchen counter and the battery went from 100% to 17%. Never had this problem with my phone and can't figure out what the deal is. Does Juice Defender have a weird reaction under certain settings or installed apps that I don't know about?
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I have exactly the same issue? you get anywhere with this?
Thats strange... I was planning on installing JD myself after a couple of days without it to get a good baseline. Anyone know what the deal is?
smithdl1191 said:
Thats strange... I was planning on installing JD myself after a couple of days without it to get a good baseline. Anyone know what the deal is?
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I installed it one of the first days I got my LGOG, before it was rooted or unlocked and it killed my battery. I went through everything within the app and couldn't figure it out at all. Next step would be to contact the dev to see if he has any ideas.
Why not just use the builtin methods to save your battery?
Assimilated using the interface that interacts with the advanced internet.
I think I'm getting decent battery life with juice defender on
Sent from my LG-LS970 using xda app-developers app
Man listen you do not need addon software to save your battery. It's useless! You do not need any software or app to save battery life! It's like me using pc with norton protection LOL. Turn your sync off.
I've been using jd since the day I got my phone... No battery drain problems. I have my settings on a semi frequent sync schedule (30mins) and can get about 1.5-2 days if I let the battery get close to 0. Check your settings... Both in jd and not.
Sent from my LG-LS970 using xda app-developers app
I never partook in using these seemingly useless apps. From what I have seen over the years, these apps cannot really differentiate what processes need to run for system stability versus what is just eating up RAM and metaphorically killing the battery. I have never had success using battery saving or task managing apps, as they eventually always proved counterintuitive.
Want better battery life? Turn on Eco mode; lower your screen display; keep Wifi, NFC, and bluetooth off when not in use; and turn your vibration completely off.
JD does bring a few features you can't find in the native settings - I use it mostly to lower the screen brightness below the lowest built in setting for usage at night, as well as to quickly turn on data when I turn the screen on, and intelligently choose which type of data to connect to.
I think the main value is that I can get the best performance out of my phone (all cores, bluetooth constantly on so it connects instantly in the car, nfc on demand) when I am using it, and battery savings when I'm not. It's a very powerful tool, as long as you know how to configure it! It takes some tweaking but it's worth it.
That said, I'd contact the developers to see if you can send them some kind of log file to see what could be going on with the battery drain... They might be able to help, though JD seems to be out of active development.
Sent from my LG-LS970 using xda app-developers app