Database Users

Batteries and Battery Life

I've had my Hero since October. I've been reading these forums ever since I bought it. I keep reading about people switching from one rom to another, discussing battery life changes. Some people are stating they only have to charge their battery every two days, or get 16+ hours of heavy use on a charge. I'm on my 3rd rom, having tried Modaco, Fresh 1.0, and Fresh 1.1. I am now runnning Fresh 1.1 + Gumbo + SetCPU.
I work for Sprint. Advanced Tech Support. I work 13 hour days. I get to work, I turn off the mobile internet connection on my phone. I disable background data. In my SetCPU, I set it to powersave mode Min 245 Max 485. (Those might not be the exact numbers, at work can't check, but you get the idea.) After 13 1/2 hours, I go out and my battery is giving me the >15% remaining warning. I've maybe missed two calls and recieved 8 txts. On my off days, I wake up, take the phone off charge, and do a moderate amount of txting. I play a little music while im playing Xbox, maybe open the browser to check a game FAQ or walkthrough. Within about 3 hours of waking up I'm below 50%. If I'm planning on going to the bar to shoot pool I have to make sure my battery is fully charged, or if anyone is trying to get in touch with my I won't know cause I'm at the bar for 5+ hours txting and talking, and my phone will have died if not 100% charged. So...
I read that running Fresh 1.1+ Gumbo + SetCPU would greatly increase my battery life. Tried it. haven't noticed a change. I don't use task killers, I don't run apps, I think I've downloaded 9 apps from the market in 5 months. I use Shortcovers (Ebook reader). Dolphin browser, Handcent sms. Thats about it.
Is there a viable solution here? Does anyone have any troubleshooting steps to recommend, apps that might help, do a complete wipe and re-install Fresh and Gumbo? Change settings in CPU? I've been reading about Mugen and other batteries, any recommendations on which one would be best to try out? I love my phone, and I don't do anything to it without reading up on these forums first, just looking for any advice to not have to stay tethered to an AC outlet all day. Thanks.

fresh 1.1 + the less aggressive gumbo kernel will help alot. you don't need setcpu at all. i also recommend looking into a bigger extended battery, one that doesn't require the use of another back cover.

sirstanley said:
I've had my Hero since October.
I work for Sprint. Advanced Tech Support. I work 13 hour days. I get to work, I turn off the mobile internet connection on my phone. I disable background data. In my SetCPU,
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Click to collapse
It really sounds like you have a background task that is running and not letting your phone sleep. I turn off mobile internet at night (so I don't get bugged with Tweets and other alerts) and my battery drops 3-4% overnight (7-8 hours while sleeping). What is your awake time?
On a full charge, I can go all day (7am - 10pm) and still have more than 30% left. I have 2 email accounts, each set to sync every 30 minutes, a twitter app set to sync every 15 minutes, and I don't use weather or location services. I think a lot of people experience poor battery life due to signal quality. I get really good signals at home and a fairly decent signal at work as long as I say out of the lower (basement) floors.
-Daryel

Here's my experience with my HTC Hero from H3G (Three) UK:
Had the phone for about 2 weeks now, battery lasts me easily 1 day with quite heavy use (30-60 min GPS, 2-3 hours browsing, installing programs, 30 min music, some texting and talking. I know that for some of you guys out there this might be 'light' usage, but I believe for all of this, battery life is quite good, better than my friends' Iphones. With moderate use i get through 2 days of usage. I am just experimenting with turning off Mobile Internet, have had the phone running for 60 hrs + and my battery is at 65%, I've been turning wifi on for a few minutes a couple of times and have been talking and moderate texting during this time. I intend to leave Mobile internet off until the battery runs out of power to see how much time I get out of it. I never turn the phone off at night. I am amazed what a big difference turning off Mobile Internet does.

The OP clearly states that he downloads / runs minimal apps, and asking a Sprint advanced tech if his phone is sleeping, while a nice gesture, isn't terribly practical. I hope.
I think that there are certain phones that don't scale with GCK or a change in the CPU governor very well. I have bounced around to every ROM available, flashed and reflashed, cleared boot and dalvik caches and played with about every governor / frequency setting imaginable. With all that, all I can conclude is that my personal phone does significantly worse when the governor isn't MSM7K and drains downright terrible under GCK's stripped governors on anything other than MSM7K. Even Powersave (which OP referenced) drains my phone significantly faster than MSM7K.
I'd recommend you keep your current GCK install and adjust SetCPU to MSM7K to min 245 max 480. Then enable Profiles > Sleep > min 160 max 245. For a bit more performance when your phone is awake slide your normal max to 528; add significant performance by sliding normal min to 480. See if that helps any.

mkeyslehman said:
The OP clearly states that he downloads / runs minimal apps, and asking a Sprint advanced tech if his phone is sleeping, while a nice gesture, isn't terribly practical. I hope.
I think that there are certain phones that don't scale with GCK or a change in the CPU governor very well. I have bounced around to every ROM available, flashed and reflashed, cleared boot and dalvik caches and played with about every governor / frequency setting imaginable. With all that, all I can conclude is that my personal phone does significantly worse when the governor isn't MSM7K and drains downright terrible under GCK's stripped governors on anything other than MSM7K. Even Powersave (which OP referenced) drains my phone significantly faster than MSM7K.
I'd recommend you keep your current GCK install and adjust SetCPU to MSM7K to min 245 max 480. Then enable Profiles > Sleep > min 160 max 245. For a bit more performance when your phone is awake slide your normal max to 528; add significant performance by sliding normal min to 480. See if that helps any.
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Click to collapse
Could just be the different experiences folks receive with the Hero but when I used SetCPU to create profiles, I saw much higher battery drain. Once again, may have just been my experience but battery runs much better without profiles on my device.

Thanks for the response. And yes, my phone does sleep. I checked Spare Parts, and my most used app is Lightning Bug (use it when I sleep at night. I live in the hood and it covers up the radios and dogs barking.) After that it's Shortcovers (my ebook reader.) and then Handcent. So no abnormal program activity. Lightning bug only runs while I sleep, shortcovers just when Im reading. So nothing keeping my phone awake or anything. I do have one of the first Heros, I pre-ordered and recieved it like October 10th, so it's not Google branded, if that makes a difference. I'm considering just getting another one, but after 5 months of flashing and moifying and tweaking I'm kinda attactched to my phone. I'd feel like I was trading in my wife. So I guess I'll just go for an after market battery. Any more advice would be great. Thanks again.

kbizzle said:
Could just be the different experiences folks receive with the Hero but when I used SetCPU to create profiles, I saw much higher battery drain. Once again, may have just been my experience but battery runs much better without profiles on my device.
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Personally I'm on Modaco 2.2. Pulled mocaco.sh and changed the governor from "performance" to "msm7k" and pushed it back to the phone. No compcache, but I did include the internal task killer call in compcache.sh. Read thru either the Modaco 2.2 thread or GCK if you need help.

I'm having the same results as you. I have a non-"with google" Hero200, and my battery life absolutely sucks.
Today, took it off the charger at about 10:30, now at 3:30 it was down to 20% battery.
this was leaving mobile data on and a few text messages.
How exactly do you choose how often you want email to sync? I tried finding that in the settings menu of the Gmail app, but there's nothing there about that, just signatures and such.
I am running gumbo 1.5c bare, so it's quick (no sense UI) but battery is just as bad as with sense.
I'm not running setCPU or anything, just gbhil's kernel (i think?)
I'm about ready to spring for an 1800 mAh battery
dangit

Hate to say it, but I'm glad im nota lone on this one. Misery loves company.
I'm gettin tired of reading about people claiming they get 2 days of moderate use out a hero without charging, with a stock battery. "Oh, with this new rom I just tried, after 12 hours I was below 50%, this is unacceptable, I can normally go 2 days without charging." WTF? Did they just build a choice few heros with super batteries? Just wondering.

sirstanley said:
Hate to say it, but I'm glad im nota lone on this one. Misery loves company.
I'm gettin tired of reading about people claiming they get 2 days of moderate use out a hero without charging, with a stock battery. "Oh, with this new rom I just tried, after 12 hours I was below 50%, this is unacceptable, I can normally go 2 days without charging." WTF? Did they just build a choice few heros with super batteries? Just wondering.
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Lol, sorry man (I'm guessing you read my post at one point, 12 hours to 50%, it really did annoy me lol). I CAN get 2 days using Fresh 1.1, gumbo kernel, and SetCPU. Granted, I don't use my phone nearly as much as a lot of the people on here, but I also sit in areas with little to no service for most of my time, which can have a drastic effect on battery life.

rt1oo said:
I'm having the same results as you. I have a non-"with google" Hero200, and my battery life absolutely sucks.
Today, took it off the charger at about 10:30, now at 3:30 it was down to 20% battery.
this was leaving mobile data on and a few text messages.
How exactly do you choose how often you want email to sync? I tried finding that in the settings menu of the Gmail app, but there's nothing there about that, just signatures and such.
I am running gumbo 1.5c bare, so it's quick (no sense UI) but battery is just as bad as with sense.
I'm not running setCPU or anything, just gbhil's kernel (i think?)
I'm about ready to spring for an 1800 mAh battery
dangit
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Click to collapse
OUCH. I unplugged mine at 9am, it's now nearly 4, and I'm only down to 80%. Had WiFi on all morning, and mobile on from noon on. Sent a dozen texts, and read a half dozen emails (syncs every 15 min). Mobile data SHOULD sleep when your phone goes to sleep, and I think it'll turn on when your accounts/email sync. Same thing with WiFi.
I'm amazed at the massive variation in battery life people have. I wonder if there were a few different manufacturers of batteries, and that's causing the problem.

But I cant even bring my phone into the building so it sits in my glovebox with all data services off and no apps running for 13 hours and its at ten percent when I get off work. I just don't get it. I think I'm gonna wipe, reflash Fresh 1.1, reflash Gumbo, and start over.

sirstanley said:
But I cant even bring my phone into the building so it sits in my glovebox with all data services off and no apps running for 13 hours and its at ten percent when I get off work. I just don't get it. I think I'm gonna wipe, reflash Fresh 1.1, reflash Gumbo, and start over.
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Click to collapse
Wow, it sounds more like something might be wrong with your battery.
I could turn everything off on mine, and leave it sit in an area with decent service, and probably get over 2 days out of it...so that just seems odd. Are you running SetCPU? That'll help. Set it at either 160 or 245 min, and 528 max. "On Demand" seems to be working the best for me. It'll basically drop your processor speed when the phone's asleep, and bring it back up when you need it.

daryelv said:
It really sounds like you have a background task that is running and not letting your phone sleep. I turn off mobile internet at night (so I don't get bugged with Tweets and other alerts) and my battery drops 3-4% overnight (7-8 hours while sleeping). What is your awake time?
On a full charge, I can go all day (7am - 10pm) and still have more than 30% left. I have 2 email accounts, each set to sync every 30 minutes, a twitter app set to sync every 15 minutes, and I don't use weather or location services. I think a lot of people experience poor battery life due to signal quality. I get really good signals at home and a fairly decent signal at work as long as I say out of the lower (basement) floors.
-Daryel
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Click to collapse
+1 on this. While I understand you're a Sprint tech, it's still good to check the awake time, as it's a good indicator that something's awry. You said you run minimal apps, do you run any weather apps at all? Had some bad luck with those. Also, do you roam? I know setting it to Sprint Only helped me at home, and this is what you suggest to ppl everyday, so I'm not telling you anything, but some of the things we KNOW to be absolutely true can be wrong under our noses sometimes because we're so sure. Double check everything again.
I know it's painful to think of this as a viable solution, but there absolutely IS a way to determine if it's apps or not. I've had great luck with Fresh 1.1 AND Gumbo 1.5b. SetCPU and Gumbo Kernel made it even better.
Try this: Install either Gumbo or Fresh 1.1, the Gumbo Kernel, and setCPU (that one is optional for you I suppose, but I'd recommend it)
Don't install a single app or widget for the first day. Not a single one. Leave it for 24 hours, and see the battery life. (exceptions for apps that don't run in the background or connect for data or updates)
Then install them one by one until you find your culprit. This is how I found the weather widget was sucking the life out of my hero.
I too, have a non "with google" hero 200, and I have GREAT battery life, and even had great battery life on Fresh 1.1 when I had near 80 apps installed.
I'd bet money it's something in the background. I can speak a lot for Fresh 1.1 as I've used it the most. Great ROM, great battery life.
Btw, I also have two email accounts, one Exchange, one Gmail, BOTH set to "as items arrive" and I still can go from morning to bed on a charge with no probs.
**EDIT**
To echo Tatonka_hero, I also recommend doing the ondemand 528/245 as it worked really well for me. I got even better battery life when going that route than before, although I was never complaining about battery life in the first place.

my opinion.. it has to be something due to the signal strength.
I wonder if there is a way.. to check and monitor how often the phone looses tower contact? Then it has to try to find the next tower available, then has to bounce back to the closer one when it pops up? Is it constantly, jumping from one week signal to the next?
Which would keep the radio up and running... while the phone itself looks asleep.
Just me guessing.. with no Knowledge to base this off of.

I don't use any weather apps. A list of every app I have that didnt come with the phone:
Handcent
Shortcovers
Lightning Bug
Gensoid
GBCoid
Spare Parts
Terminal
ES File Explorer
SetCPU
I know you guys are really stuck on the idea that I'm running some intresting app, but I'm sorry to dissapoint. I wiped the phone, flashed Modaco, wiped, flashed Fresh 1.0, wiped, flashed Fresh 1.1, wiped, flashed gumbo. And then I re-downloaded the apps above. I work 7 days a week, I like to read Ebooks before I go to bed, I use lightning bug when I sleep, and if I'm riding with someone I play my emulators. Thats the story of my phone use. Also listen to music if I take a day off and im playing xbox. Theres nothing running in the background. I always have at lest 3-4 bars of signal strength. I turn off mobile network (data) when not using it. I keep my GPS off. I check Spare Parts, and everything in there is pretty much correct. My phones awake time is about 20%, if that. haven't checked in a couple days. So, tonight I'm gonna wipe, re-install Fresh 1.1, re-install Gumbo, and see if that helps at all. Is there any kind of consensus on the best settings for setCPU to save my battery?

sirstanley said:
I don't use any weather apps. A list of every app I have that didnt come with the phone:
Handcent
Shortcovers
Lightning Bug
Gensoid
GBCoid
Spare Parts
Terminal
ES File Explorer
SetCPU
I know you guys are really stuck on the idea that I'm running some intresting app, but I'm sorry to dissapoint. I wiped the phone, flashed Modaco, wiped, flashed Fresh 1.0, wiped, flashed Fresh 1.1, wiped, flashed gumbo. And then I re-downloaded the apps above. I work 7 days a week, I like to read Ebooks before I go to bed, I use lightning bug when I sleep, and if I'm riding with someone I play my emulators. Thats the story of my phone use. Also listen to music if I take a day off and im playing xbox. Theres nothing running in the background. I always have at lest 3-4 bars of signal strength. I turn off mobile network (data) when not using it. I keep my GPS off. I check Spare Parts, and everything in there is pretty much correct. My phones awake time is about 20%, if that. haven't checked in a couple days. So, tonight I'm gonna wipe, re-install Fresh 1.1, re-install Gumbo, and see if that helps at all. Is there any kind of consensus on the best settings for setCPU to save my battery?
Click to expand...
Click to collapse
Thanks for the detailed reply...it helps us get a better picture of your habits.
That being said, use the ondemand 528/245 and you should be just fine. Make sure to set it to save those settings on reboot too, because setCPU used to (not sure if it still does) set itself to performance mode on reboot otherwise which would definitely drain your battery.

alright this is probably a stupid question but how do i check awake time with spare parts? is it under battery history? then is it partial wake usage option?
And is Locale.apk known to be a battery hog...I feel like it might be...ouch.

rt1oo said:
alright this is probably a stupid question but how do i check awake time with spare parts? is it under battery history? then is it partial wake usage option?
And is Locale.apk known to be a battery hog...I feel like it might be...ouch.
Click to expand...
Click to collapse
It's just under Settings > About Phone > Status then all the way down

[GUIDE] bed-2-bed - or how to make your battery last throughout the day

waking up -> going to sleep: 9am to 1am++. with 3G data always on and still some juice to spare.
Google sync,
Google Talk always-on,
Gmail push,
Twitter updates,
Nagroid nagios updates (most people won't need this, so more battery for you!),
Moderate use - calls, email, browsing, xda, maps, market, trackid, facebook, twitter, a few photos (uploaded to FB), etc. (no games - yet )
If I got your attention, read on
I've been struggling to get my X10 through the day.
The first days were awful, the phone would die before the day ended.
Thankfully, through trial and error, I've managed to improve battery life to the point that it lasts me one full day - bed 2 bed
Here's what makes it happen:
Update to the latest rom
The last version fixes a lot of battery issues. Make sure you update!
I'm using the rooted rom
Make sure your phone charges up to 100%
This is important. It seems that if the phone is hot, it won't charge the battery.
If you can't get it to 100%, try cooling the room (or switch rooms ;p) and charge the phone through a PC USB port.
Use JuicePlotter to make sure it actually charges.
If it starts draining power, remove the cable for a few minutes and reconnect it.
If you still have issues, try restarting your phone before reconnecting the cable.
Leave it connected even if the green light is on, it'll keep charging!
When it reaches 100%, the light will turn off and the lightning on the battery will disappear.
That 10% can make a difference
Use Advanced Task Killer Free to kill any apps you don't use.
Be careful not to kill apps that are needed for background updates (i.e. your Twitter client).
Also, if you have an app you use frequently, its better to keep it running than constantly restarting it.
Only kill apps when you know you won't need them in the next few minutes.
Use sane update intervals.
<= 5 minute updates will drain your battery faster.
Unless you really need to get fast updates, I recommend using 15/30 minute intervals, depending on the app.
I use 15m for Nagroid and 30m for Twidroyd.
I have disabled Facebook's updater, since I find it useless.
Disable the automatic brightness mode.
The display is gorgeous but it eats battery like crazy.
Stick to 10-20% brightness (I have it at 14%) and use a widget to temporarily increase it when you're outside under the sun.
Use SetCPU. This requires rooting the device.
Create a special profile that forces the device to run at low clock speeds when the display is off.
* Go to profiles
* Check Enable
* Press Add Profile
* Set the following:
Condition: Screen Off
Max: 384000
Min: 245000
Governor: ondemand
Priority: 50​Press Save
On the Main tab make sure you have
Max: 998400
Min: 245000
Scaling: ondemand​
*note: SetCPU is available on the market. If, however, you can't buy apps in your country, you can get it here.
Avoid Apps that use GPS in the background
GPS is a major battery killer.
Weatherbug with location detection enabled can eat through your battery in minutes.
Make sure that no app running in the background is using the GPS module.
Disabling location services completely doesn't seem necessary with the latest rom. Just make sure nothing is using it when you don't want it to.
Use an alternative home screen
I use ADW Launcher.
This seems to help, although I haven't tested it independently to be sure.
Its so much better than the stock Home/Launcher anyway
Thats all, assuming I didn't forget anything
Hopefully this will help people with battery issues get the most out of their X10
Enjoy!

Good info.

Pretty sure most xda users already do most of those things, but it's certainly useful for new owners...I wish I had a guide like this when I first got my X10.

i actually leave GPS on. i use SETCPU to always be 768min, 998max at all times except under 30% (256/576). using adw. kill apps once in a while. i wake up at 730am and get home from work at 1pm and it will still have ~20% battery and that's with probably 50-100 texting situations and some email, some browsing. =) But using youtube destroys bettery life. lol

My Story....
X10i unbranded - NOT Rooted - R2BA020. UK Based.
ADW Launcher
No auto updating internet widgets
Wifi always on during the day, (off when I'm in bed)
3G/ GPRS always on during the day, (off when I'm in bed)
Bluetooth always on during the day, (off when I'm in bed)
K-9 Email syncing hourly
Facebook app refreshing hourly
Data Sync using google -
- Background data on
- Auto sync on (Calendar and contacts)
All location data switched off if I'm not using it..
No task killers or startup auditors.
NOT running juice defender.
My usage is not massively heavy.. because I don't use the phone for work.. but I do use it during the day - Internet, XDA, phone calls, SMS, camera
My phone was at 100% yesterday morning at 0745.
it's now 38.5 Hours later... and I'm on 22%
Magic?

save your battery .

mkay here it is what to do disable in order to conserve some juice :
settings - sound - haptic feedback - uncheck
settings - dispaly - brightness off half way or less , go to web browser brightness and lower it also disable in browser settings location check
settings - location and security use gps - unchecked disabled
settings - account and sync - uncheck
settings - privacy - back up my date - uncheck
i also unchecked serchable items so my phone doesent even try to search anything else than web browser
next download zim launcher which doesent eat battery at all 1% in stand by .
Screenfilter is a next program that allows you to lower your screen brightness even more that stock alowes you which is nice on bettery too cause our screeen eat most of battery .
AutoStarts its a program that allows you to control apps startin when you boot your phone you can remove some to prevent them from startin when your phone boot
download systemAppRemover its a paid app but works well and lets you delete programs from system which u dont want/need and those programs most likely run in background eatin your battery ,for me those programs were .. remeber i dont use them so i didnt need them :
voice dail -deleted
voice search - deleted
ptt- deleted
wi fi callin - gone !
there is prolly like 5 more programs that i deleted just forgot what it was annd
if you dont need crap on your phone eating your battery % install bloat free OS . good luck
also make a shortcut for stock task manager to your home screen and hit clear ram or close programs once in some while .
you can save your battery also by downloading program called SETCPU and lower your cpu frequency from 1ghz to 800 or 600 it helps also , and if you run voodoo or any else moded kernel dont expect battery to lasst as long as stock too !
want to remove wi-fi callin aka battery hog download file below flash it with clockwork
also u can freezee programs with TITANIUM BACKUP instead of deleting them so if u need them for later use theyr all there .

The only good recommendations you offered were to underclock and remove bloatware.
I'm not going to disable everything about my phone that makes it a smartphone. If I did that I would not have bought a smartphone.

I DIDNT TELL YOU TO DISABLE THINGS its your choice what you wouuld follow to conserve your battery thats what i do because i use my phone as mp3 so music is no1 thing so i dont need those things but they also helped save consumption of battery ,and as far as i see some people dont even know yet they can disable these features so im just breaking it down for some . if this thread is usles some one delete it ! p.s like when im in school and my phone starts to die i disable data so it saves life so i can put my headphones and use it as mp3 player

Meh, I just have two spare batteries and a batt charger, so I run with everything on, full brightness. Even if my battery only lasts 8 hours, I just pop in a fresh one and I'm good. Like the other guy said, I don't see the point of buying a smartphone and then turning off everything that makes it useful or fun.

unlike me with one battery and 10 gig of music, u can go carry those liteon in ur pocket lol

bartek25 said:
unlike me with one battery and 10 gig of music, u can go carry those liteon in ur pocket lol
Click to expand...
Click to collapse
The batts are pretty darn skinny. I can even put one in my wallet if I'm not carrying a bag.

Get a extended battery. Last me exactly 25 hrs of use. Or take 20sec with a spare change. How much life can yall expect witg a smart phone that doesnt sit all day.
Sent from my SGH-T959 using XDA App

ummmm...if your going to disable all that stuff, then why even have a smartphone?

when i need my phone to be smart i go and run it on demand meaniing go and enable it ! honestly `i dont think you need everything runnign in background so go at leatrs frezz it do at your own risk and its your choice to choose how long your phone will last today 4h or 20 , thats it ,i was just tryin to be helpful for those who dont know

bartek25 said:
when i need my phone to be smart i go and run it on demand meaniing go and enable it ! honestly `i dont think you need everything runnign in background so go at leatrs frezz it do at your own risk and its your choice to choose how long your phone will last today 4h or 20 , thats it ,i was just tryin to be helpful for those who dont know
Click to expand...
Click to collapse
And if that works for your purposes, that's awesome. Thanks for the suggestions.

I leave every thing on and really only use task manager to shut down background apps when not needed. I have a spare Battery....never used it...yet but, I have it
I run alot of stuff on this phone but only use the music player about 1/2 hr a day
I am getting 16-20 hrs on a charge.......... So it never has been an issue to me. I am kinda confused why people complain about the battery......... unless they are playing games and youtube all day or overclocking the phone....... the battery lasts just fine.........

why not just do one better and turn the phone off? Just turn it on when you need to do something. Battery life is AMAZING.
Personally, I just keep a charger / car charger handy.

To cut down on battery usage while maximizing speed is to have my processor overclocked and set up profiles to disallow overuse of processing power while my phone is not in use, and maximizing it while it is.
PS. You don't have to be overclocked. Just but setcpu and create profiles. For example: 1ghz max and 800ghz min default. Then a profile set for when the screen is off to use 800 max and 0 min.
I also use a task killer to minimize RAM usage.
Sent from Count Chocula's Overclocked Samsung Fascinate

bumpin this as of so cause im bored ;P

Thx for the tips. A couple I didn't know about. Like you, there are some features I never use and they are battery hogs. It's up to ppl to decide if they want to carry an extra battery or bulky extended battery but its always good to have options.
I'm might judy go crazy freezing everything up...lol

Here's what I do...
- Uninstall bloatware
- Use SetCPU; underclock to 200 max, 100 min when screen is off, saves a ton of battery without affecting performance at all.
- Autokiller memory optimizer boosts speed and (supposedly) battery life and takes away the need for a task killer
And that's about it. I lose no performance and get good battery life.
I go 5 hours with my phone unplugged with light to moderate usage (text and email) and my battery drops only about 10%. I leave the phone on standby for 24 hours without using it and battery drops about 2%.

wearmaize said:
Here's what I do...
- Use SetCPU; underclock to 200 max, 100 min when screen is off, saves a ton of battery without affecting performance at all.
-
Click to expand...
Click to collapse
I believe android already scales the cpu to 100mhz when the phone idle so you dont need set that in setcpu.

Does it? Because when using Setcpu and underclocking with the screen off, there's a slight lag when "sliding to unlock" but none when I disable the profile, leading me to believe that there is a difference.
I honestly have no clue as to whether the OS does this by default, however. That's just what I noticed.
Sent from my SGH-T959 using XDA App

Set it to 200/200 no lag. There is almost no difference(in battery use) between 100mhz and 200mhz so just set it at 200min 200max for screen off
Sent from my SGH-T959 using XDA App

14 bucks and I got an extended battery. Best decision ever, seriously. I'm sitting at about 12 hours unplugged, and still have 38% left. Battery left is estimating 8 hours left on this one charge. That's with heavy use. Music playing, web browsing, downloading apps, playing Angry Birds, posting to Facebook, Google Reader syncing. Seriously, just spend the 14 bucks and save all the trouble of disabling stuff.

[Q] Help, what is your battery drain, and why mine is sooo High???

First - let me state - and it is true - that I used the search function.
I read pages and pages of advices to lower battery consumption on my HD2 Android... without success...
First I used an SD ROM. I read that a NAND would improve battery life. So this is what I did.
I am also using SetCPU with a profile when battery <30% and another one when screen is off to LOWER the CPU speed. In normal use, I set CPU speed at 768MHz trying to lower power consumption...
I use a task killer to free memory and prevent silly programs to drain my battery off...
I use Juice Defender to control wifi, data, etc...
And with all of this in place, my "Current widget" shows a consumption of 180mA with screen on doing nothing, up to 350-400-500!!! mA when acutally using the phone wifi+sync...
In the forum I read consumption like 3 mA - 9 mA!!! This is FAAAAAR Way lower than what I ever had with different builds...
So this is an help scream to everybody: what is your battery drain, and why mine is sooo High???
Hint: I am also a fan of LCD Density changer, with setting at 165... can this have an influence on battery drain??? I reverted to the original 240, doesn't seem to have any influence...
Thanks for your help,
Looki

My drain is 3-9 ma in STANDBY ONLY now and again slightly more but mainly the values stated. And my screen on between 120+160ma. Turn off auto brightness if you have it on, and set it at the lowest your comfortable with (display is big batt drainer) I DONT use taskillers as they do more harm than good. I use NO undervolting and only the default settings with my rom. I have low lcd density setting 167 i think. Lcd density has no effect on your battery drain!
Found this here. http://forum.xda-developers.com/showpost.php?p=13151738&postcount=11296 Might be of some use to you? (from hyperdroid gbx thread)

Whats youre rom?
And do u use ext partition on sd?
I dont even use SetCpu anymore. Only taskkiller.
Auto-brightness is on
Auto sync is off.
Im using UD 3.3 nand from crawlingcity
Stansby is 3 -6 ma
Using round 160 to 250.
Sent from my HTC HD2 using XDA App

How long does your battery last from 100% to self shut down? As for Current Widget, keep in mind that when people say "Standby", its generally referring to the screen being off. Set current widget to update every 30 seconds, and turn the screen of for 40 seconds. Then quickly turn the screen on, unlock, and check what it is reading then.
If its still high, try "Force Stop" applications in the Settings > Applications menu one by one, i've had to do this more than once to locate problem apps that were destroying my battery in standby mode.

I'm knew to Android, let me share you my idea.
I use UD3.3
I removed google stuff
gmail, search, etc
No auto sync
Location off
Always kill market when screen off.
I use beautiful widget for weather manual refresh.
I use battery widget
Auto level for screen
sometimes WIFI on
2g Only
2 or 3 calls,total of 3 to 4 min a day
My battery stay 48 hrs in STBY mode.
I think the most draining factor is
1) google stuff they are battery hog.
2) screen
3) bad written programs (every time they check connection to
internet or looping for doing something, looping will make
CPU in high frequency).
4) bad device driver such as BT which is known as 60ma
drain. it is not the hardware but it is the software doing
the drain.
thanks

pc2058 said:
I'm knew to Android, let me share you my idea.
I use UD3.3
I removed google stuff
gmail, search, etc
No auto sync
Location off
Always kill market when screen off.
I use beautiful widget for weather manual refresh.
I use battery widget
Auto level for screen
sometimes WIFI on
2g Only
2 or 3 calls,total of 3 to 4 min a day
My battery stay 48 hrs in STBY mode.
I think the most draining factor is
1) google stuff they are battery hog.
2) screen
3) bad written programs (every time they check connection to
internet or looping for doing something, looping will make
CPU in high frequency).
4) bad device driver such as BT which is known as 60ma
drain. it is not the hardware but it is the software doing
the drain.
thanks
Click to expand...
Click to collapse
Bt drain has been fixed, wil now get you 6-15 ma.
Google stuff aint bad, just set update frequentcy to manual.
(Helps with alot of other programms that require internet.)
Sent from my HTC HD2 using XDA App

[Ultimate GUIDE] Increase your battery life on Android
Thanks guys for your help!
I made a compilation of all tips I could collect and/or find by myself.
They are here: http://forum.xda-developers.com/showthread.php?p=15229416
Regards,
Looki

Battery sometimes just crashing down

Hey there, I really have on problem with my N4 since I own it:
From time to time my battery drain just goes huge. For me it feels like that is everytime I go out and have my phone in my jeans pocket. So at some point I thought I would press the button to active the display all the time.. but thats not happening (according to GSAM Battery Monitor).
I had all 4.2.x stock ROMS + stock Kernel and also with Franco Kernel. I always had this problem from time to time.
Signal is there, there is no significant battery drain from any app. The % of each app is normal and I also dont use any app more than usually. I don't have new apps.. everything is like always. Still my battery goes from 100% to 0% withint ~ 6 hours (30 mins SOT).
Any ideas? My battery is at 47-50 Celsius, the cores go offline as they are supposed to. I tried reboots in between e.g. in case an app is bugging. But actually all apps are as usual :/
Thanks
@edit: it also happens when the phone is on my table.. i just had it with 17% left on my table, didnt touch it.. after 30 mins it was off because the battery was empty. wtf ?

The biggest battery suckers are radios and the screen. I turn off wifi, GPS and BT whenever I'm not using them. Keep a short timeout for the screen.
Unfortunately, six hours doesn't sound too far off from normal if you've got things running. I'd go through an entire battery cycle watching a 2-hour 1080p movie. Overnight, my battery dropped about 15% while only bluetooth and GSM were on. The N4 isn't really known for good battery life :\

BT is off. In general my battery holds up one day without any problems. But sometimes it goes down within a few hours and I dont know why.

Possibly a scheduled background service? Maybe Google Sync is pushing a whole bunch of data periodically?

Huge Fandroid said:
Possibly a scheduled background service? Maybe Google Sync is pushing a whole bunch of data periodically?
Click to expand...
Click to collapse
Hmm no not really. Also, it would happen every day or in some interval. Not just on random days?
besides that I dont use any syncing and also it would be shown in the GSAM Battery Monitor or general battery usage ?

I dare not say I'm a professional in battery saving, but I did break the 8 hour SOT on N4(minimum brightness of course).
Let's see, I only use 2G, because I only need internet for Whatsapp, and I greenify every single other apps.
You might undervolted too much according to your signature. -200mv might reduce heat but consume 1.2-1.5x more battery than normal voltage, its hard to explain, but its the truth, try -150 then -100.
Since you're on Franco, reduce the vibration a little, as for scheduler, I personally prefer Deadline on 2048. Governor definitely interactive, and freqs at 1.2Ghz. Because personally I dare-say at 1.2 Ghz you can run most apps almost instantly.
Like the second post said, Off wifi, GPS and bluetooth. Under settings > location settings> one is GPS and another is google location, off both. And you might still even have NFC on? No idea in this.
Download an app called build.prop editor or kernel tuner.
Modify build.prop a little. Add in pm.sleep_mode=1 and change the value of wifi.supplicant_scan_interval to 600 or 900.
Disable auto brightness and fix to something you like but below 50% .

I am not on -200 anymore.. -100 all the time
i also use greenify for nearly all my apps.
GPS, BT is turned off, Wifi normally too (tasker is doing that, depening on GSM antenna reachable or not).
The other tips are really nice but should affect the battery drain THAT much ?
Thanks !

As a little update:
It seems like this only happens at certain locations ?!
E.g. at work.. everything disabled (wifi, BT, gps, etc) .. even Tasker is disabled incase it was bugging -> about 10% for 30 minutes.
I have full connection bar to my carrier.. what the hell is that ? Battery temps are normal, same apps running as I had running when I was at home. I don't even use the phone but as soon as I get to work and my phone gets a carrier signal, the battery graph shows a rapid drop.
19:34 - 61%
20:03 - 54%
20:20 - 48%
20:54 - 38%
21:20 - 31%
Battery sitting at 37 Celsius... why.. why why ? :S

Alright now I know when my battery is crashing:
as soon as I turn off and I connect to my carrier. but why? Normally it should be exactly the other way. When WiFi is on and connect, the battery drain should become higher.
But as soon as I leave a WiFi, my phone gets hot and looses A LOT of battery very quickly.
Any ideas ? I have full signal.. but in any case.. I have the same signal as I also when while connected to Wifi.
e.g. at home with wifi - good battery life. but as soon as I turn the wifi off -> battery loss !