Database Users

Battery life? Is it really that bad?

Gizmodo and MobileCrunch have pretty much bashed the battery life to make it sound like if its not on the charger, it will die in a matter of an hour or three. For the people who got one from the I/O or other means. What do you get from the phone during a normal days usage? If its that bad, have you guys use SetCPU/Locale/App Killers etc? Thanks.

With light to moderate use, it lasts through the day. A bit worse than Nexus One in that respect, but not too bad.

Agree with sergey.povzner.
Android central had a great review on this. I have heard a mixed bag of battery life. Some sounded very good some didn't. But it's the most power smartphone out there so additional drain is expected.
http://www.androidcentral.com/review-sprint-htc-evo-4g-android-smartphone

It not as good as my n1 but its close. It gets a lot better with custom roms without sense.

Uptime 10:08:35
Awake time 1:46
I had it plugged into computer for about 25 mins to transfer a movie.
I have 80% battery left.
No bluetooth, no GPS, no WIFI.

I don't have anything extra except gmail and another account frequently syncing. I get 4-5 hours of browsing and email with 4g on or off, wifi off, gps off. Standby time doesn't seem to have significant effect though I'm sure it would be measurable if you left it in standby for a day. Adequate to get me though a day, but I hardly use voice.

What if you are watching full length movie on HTC Evo, how long will the battery last (especially if I put it on airplane mode)?
I am planning to switch from from Xperia X10i to HTC Evo. My x10 has the usual battery drain problem but I have controlled it with task killer. However, I am yet to run a full movie on it. If x10's battery life has more survival time (with task killer on it of course) then HTC Evo then I might think twice.
Also can the 'task killer' improve HTC Evo's battery life?

Does anyone know if the Evo uses the HTC Touch Pro size battery like the Hero?
If so then I've already got an external charger and three extra batteries!

Honestly if anyone is that worried about battery life get another battery as a backup. Its been said many times on these forums that a HTC Touch Pro 2 and also a HTC Hero all use the same batteries as the EVO. (Confirmed). You can pick them up on ebay for around 7 or 8$. Which is pretty cheap! Nothing better than having an extra juice pack laying around waiting to be used! Hope this helps somewhat

Stunna4life888 said:
Honestly if anyone is that worried about battery life get another battery as a backup. Its been said many times on these forums that a HTC Touch Pro 2 and also a HTC Hero all use the same batteries as the EVO. (Confirmed). You can pick them up on ebay for around 7 or 8$. Which is pretty cheap! Nothing better than having an extra juice pack laying around waiting to be used! Hope this helps somewhat
Click to expand...
Click to collapse
LOL we posted at the same time, thanks for answering my question! I'll keep a backup in my glove box and one in my back pocket. This method worked great with my Hero.

danknee said:
LOL we posted at the same time, thanks for answering my question! I'll keep a backup in my glove box and one in my back pocket. This method worked great with my Hero.
Click to expand...
Click to collapse
Great minds think a like. Ya man wont get to hot in that glove box either. Its always nice to have a little something extra especially when we will be showing this bad boy off 24/7 to anyone that wants to see it! Cant wait to "Officially" get mine lol. Im about 17 hrs and 3 minutes form my appt.

Stunna4life888 said:
Great minds think a like. Ya man wont get to hot in that glove box either. Its always nice to have a little something extra especially when we will be showing this bad boy off 24/7 to anyone that wants to see it! Cant wait to "Officially" get mine lol. Im about 17 hrs and 3 minutes form my appt.
Click to expand...
Click to collapse
i'm so excited, wish I had an extra battery though, it'd be nice
8hrs 15min till i get mine!

Gotta say this thing blows my old Moment's battery out of the water... 4.5 hours hard and heavy use... 60% left - no 4G coverage area (but it was left on by accident - ooops) and no video watching, but heavy text, email, and facebook/twitter activity.

I ordered the extended slim battery from seidio.com. 1750 vs 1500. Should give a bit more in the long run.
Its been decent for me though. Just dont jack up your brightness, keep it on auto.

Wifi kills my battery. The signal never settles even though the coverage should be good all over my house.

You want to go into advanced wifi settings and change WiFi sleep policy to never otherwise your phone will shut off WiFi after 15 mins of screen being off and you'll be using 3g which will use a lot more battery.
-------------------------------------
Sent via the XDA taptalk app from my EVO

donatom3 said:
You want to go into advanced wifi settings and change WiFi sleep policy to never otherwise your phone will shut off WiFi after 15 mins of screen being off and you'll be using 3g which will use a lot more battery.
-------------------------------------
Sent via the XDA taptalk app from my EVO
Click to expand...
Click to collapse
Its already set to never.

Mybattery was pretty terrible. Lose 10% per 40 minutes on standby mode alone. After messing around with it for a while I discovered the culprit was the location services. I turned them off and now I lose about 2% per hour on standby.

tadda said:
Mybattery was pretty terrible. Lose 10% per 40 minutes on standby mode alone. After messing around with it for a while I discovered the culprit was the location services. I turned them off and now I lose about 2% per hour on standby.
Click to expand...
Click to collapse
I'm curious, how exactly do you go about turning off the location services? Unless it's included with the GPS tab of the settings, I haven't been able to find such an option on my brother's Hero.

Mecha2142 said:
I'm curious, how exactly do you go about turning off the location services? Unless it's included with the GPS tab of the settings, I haven't been able to find such an option on my brother's Hero.
Click to expand...
Click to collapse
It's under settings , location and then location setting. This does not disable the 911 location which is good.

Double the battery life!

i ran across this....
full article here http://jsharkey.org/blog/2010/07/01/android-surfaceflinger-tricks-for-fun-and-profit/

Looking forward to this release! At work I have a hard time charging my phone. Getting notifications all day and being able to use the phone normally is great but I am work for over 8 hours. If I can click a widget and reduce battery drain while I am not using it....awesome! I can always press the widget to restore when I want to view back to normal. I can see how this would be useless to most, but this gives me the ability to use the phone for that 8 hours and not have the phone die before I get home.

I dont get why anyone would trade a great looking for screen for a unicolor one just for one more day of battery life.....

EPIC FAIL.................

Terrible idea. Why don't we just buy 5 year old blackberries...They have great battery life.

Yeah, this is really dumb.

RevJesseJ said:
Looking forward to this release! At work I have a hard time charging my phone. Getting notifications all day and being able to use the phone normally is great but I am work for over 8 hours. If I can click a widget and reduce battery drain while I am not using it....awesome! I can always press the widget to restore when I want to view back to normal. I can see how this would be useless to most, but this gives me the ability to use the phone for that 8 hours and not have the phone die before I get home.
Click to expand...
Click to collapse
If you can't use your phone for 8 hours there's a problem somewhere. You probably have apps sucking the battery to death

Ownatik said:
If you can't use your phone for 8 hours there's a problem somewhere. You probably have apps sucking the battery to death
Click to expand...
Click to collapse
I haven't had 8 hours on a change since I first got my G1. I never have on my nexus either. But I do use the phone a lot.

Nexus One, Virtual Boy Edition.

I'm running an 800mV kernel right now, with SetCPU at 806mhz...
...I've had the phone unplugged and have been doing normal/daily use. 12 hours and I'm at 72%
/shrug

Heavy usage, phone JUST died, 21 hours use. Thats texts, internet, maps, GPS, and phone calls.
6-26-10 925mv wildmonks kernel

Ryjabo said:
I'm running an 800mV kernel right now, with SetCPU at 806mhz...
...I've had the phone unplugged and have been doing normal/daily use. 12 hours and I'm at 72%
/shrug
Click to expand...
Click to collapse
care sharing kernal?
and exact CPU settings?
antiochasylum said:
Heavy usage, phone JUST died, 21 hours use. Thats texts, internet, maps, GPS, and phone calls.
6-26-10 925mv wildmonks kernel
Click to expand...
Click to collapse
you too

Ownatik said:
I dont get why anyone would trade a great looking for screen for a unicolor one just for one more day of battery life.....
Click to expand...
Click to collapse
I would come handy when the battery is below the 10% mark ...

suren21 said:
I would come handy when the battery is below the 10% mark ...
Click to expand...
Click to collapse
As would a spare battery..

But if filters are posible why can't we change the colors by ourself (reduce the saturation for some who don't like it)... Sounds plausible after seeing this hack, love to see an APK or ROm which have included this... Some Days battery hold for hours and hours, other day my max is 8/9 hours (heavy usage )

Ryjabo said:
I'm running an 800mV kernel right now, with SetCPU at 806mhz...
...I've had the phone unplugged and have been doing normal/daily use. 12 hours and I'm at 72%
Click to expand...
Click to collapse
well you would get that battery life if your degrading your cpu to Hero standards, lollol
Im overclocking on CM6's standard pershoot .34 kernel and im getting a day always, i take it off charge at 8am and when i get home around 7pm its at about 20-30 percent... And that is proper heavy use, I watch video's on the way to work, mp3, browsing, the phone is actually an extension of my bod lol
I think this is the norm if you want to have the super phone you paid for, and not underclock it and undervolt it into T-mobile pulse territory, lol
JD

Those replying this is stupid need not bother in this thread any long I guess.
For me, usually my battery lasts long enough, but at the same time, the time I might need it would be I've finished my work day and just found I'm not going home to charge it but need to go elsewhere, or like yesterday I had to stay at work and my N1 was needed, but I couldn't charge. When you realise you need to stretch your battery life, you want to know what you should change to extend it. This is just another of those options. It will be useful to have for emergencies.

I for one would like to see this added as an option. As stated in certain cases it could be very useful to be able to use the phone with screen on and lower the battery drain.

Ownatik said:
If you can't use your phone for 8 hours there's a problem somewhere. You probably have apps sucking the battery to death
Click to expand...
Click to collapse
I know why my battery drains. I know what apps I am running and I can keep track of all that. I have chosen all my own apps and run what I want/need during that 8 hours. No work around other than turning off those apps. What is the point then? Keep my battery lasting longer but not enjoy the phone and all its purposes? I could always just turn my phone off. No apps running then. Like I said, this would not apply to very many users out there, but not all users are in my situation.

skittleguy said:
Nexus One, Virtual Boy Edition.
Click to expand...
Click to collapse
FO3 FTW!

[Discussion] Talking about battery life with Android

Hi All,
I've test all of Android builds with lastest kernels but Android on hd2 still eats battery like a T-Rex
My phone survival time not longer than 6 hours on GPRS network.
How about yours?

Come on man, I'm fairly new here but I'm comfortable enough to say... You have to have seen that there are several threads not only on this same topic, but even on how to improve your battery life with Android.

I've try all of these tips not work for me How is yours?

Make sure to turn down the brightness of your screen. There is a thread not far from this one titled "how to improve battery life on Android HD2." Read that. Also put your phone on a charger any time you're near one: desk, car, couch, etc. Disable some of the always on widgets, maybe don't sync social networks or minimize the frequency they sync... the list could go on.
The fact of the matter is these are not final builds and are running from the SD card. A super long battery life isn't to be expected. Follow some if the steps above, read the how-to thread, and give it a shot.
Don't forget to thank the devs who put this together.
Sent from my HTC Desire using XDA App

With SetCPU running and set up properly, after a day of normal use (around 16 hours) on Shub's Cyanogen's 1.1 build I have around 15% battery left. So clearly you have something setup wrong to be only getting 6 hours. My battery life is now no worse than it was on Windows Mobile.

yeah i get over 20 hours

I got 20 hours with heavyish use for 10 hours, and 10 hours no use.
Which is about the same as i'd get with just winmo.
I could easily use this build for my day to day phone

trueside said:
I've try all of these tips not work for me How is yours?
Click to expand...
Click to collapse
If I'm using the phone heavily, 12-15 hours. I have no idea how much idle time I would get as my phone is rarely idle as I use it for work constantly... And this is without using SetCPU or any of the battery life tips/tricks honestly. Keep in mind I use the T-Mobile "extended battery" case which recharges my battery with the flip of a switch on my case but I don't ever let it get below 20%.

Hmm I see. I'm starting to thing my battery problem doesn't about Android Builds maybe my SD cards needs a lot of power to work?? What is your android setup? Which build which zimage?

jjones1983 said:
If I'm using the phone heavily, 12-15 hours. I have no idea how much idle time I would get as my phone is rarely idle as I use it for work constantly... And this is without using SetCPU or any of the battery life tips/tricks honestly. Keep in mind I use the T-Mobile "extended battery" case which recharges my battery with the flip of a switch on my case but I don't ever let it get below 20%.
Click to expand...
Click to collapse
um...that's not a really good comparison.
that's like saying "I can get 1000 miles on one fill up, but I have two tanks and just flip the switch for the second tank".
What do you get with out using the extended battery case?

HotShotAzn said:
um...that's not a really good comparison.
that's like saying "I can get 1000 miles on one fill up, but I have two tanks and just flip the switch for the second tank".
What do you get with out using the extended battery case?
Click to expand...
Click to collapse
Sorry, I didn't make that clear. I get 12-15 hours without having to flip on my case. I usually switch it on at around 20%, which is why I said I never let it go below 20%...
Edit: I forgot he asked me which build and zImage as well.
MattC Froyo RC 1.4, 08/03 zImage.

battery "life" is not the main issue here.
in my opinion, the main issue is power management. that causes short battery life combined with high battery temperature.
can the devs say the reason(s) why is the power management that bad? that is the main issue with android builds right now, once it's solved, android can be a true main OS for everyday use.

trueside said:
Hmm I see. I'm starting to thing my battery problem doesn't about Android Builds maybe my SD cards needs a lot of power to work?? What is your android setup? Which build which zimage?
Click to expand...
Click to collapse
i zimage is out yesterday

victorbd said:
i zimage is out yesterday
Click to expand...
Click to collapse
where do you see a new zimage?
http://cotulla.pp.ru/leo/Android/
just checked and there's none for Aug5?

Other than using the latest zimage and SetCPU to force autoscaling CPU and Conservative CPU Governor, I've noticed Darkstone's vanilla froyo v1 build gives pretty good battery life (vs say, the CM RC1 build) by default.
I've also noticed that I get great standby battery consumption if I ensure that S2U2 is running in the WM background (as iLock2.exe) with the setting "Don't Suspend Power" unchecked in S2U2 options before booting into Android.
On a 3G network with a idle data connection, the (standard HTC) battery only drops 10% for a 10-11 hour standby time.

jjones1983 said:
Sorry, I didn't make that clear. I get 12-15 hours without having to flip on my case. I usually switch it on at around 20%, which is why I said I never let it go below 20%...
Edit: I forgot he asked me which build and zImage as well.
MattC Froyo RC 1.4, 08/03 zImage.
Click to expand...
Click to collapse
You get 12 hours with heavy use? Mind telling us what Radio/Rom you are using? What other settings?
I managed to get to 8.5% per hour drain with normal use.
Of course, I never got better than that with WM anyways...

lol i get about 31 to32 hrs (1hrs mp3 and 30min internet) with light use

I must admit my android battery issues were solved with setcpu and screen brightness tweak.
Only funny thing is that with my setcpu profiles identical between Mattc-froyo and Shub-cyanogen, there is a short delay in the latter's response to a key press once screen is off and device locked. No delay on Mattc.....

How I got 20+ hours of battery

Im able to run my phone for over 20 hours with sync and data on.
How I managed it:
1. Deleted almost every app
2. Flashed 8/25
3. Switched to Launcher Pro
4. Go to CyanogenMod Settings>User Interface> Automatic Backlight> Enable
5. Go to Spare Parts> End Button behavior > Set Go to Sleep
5. Wiped dalvik cache
6. Recharged to full
7. While at 100% charging, wiped battery stats
8. Unplug and let the phone drain to 0% (let it turn off)
9. Recharge and enojoy
If succesfull backup
Im using the stock kerned with NO battery tweak. I tried it but since I didnt see any improvement I took it out. 8/25 is amazingly fast with launcher Pro so I dont see the point in changing anything else to my Hero. Now I only install Apps that I really want or that wont keep my phone awake. I use pure calendar, handcent, beautiful widgets...stuff like that
Now after 10 months of use im really enjoying my HERO. I hope this helps those of you that are trying to improve your battery life.

gurusux said:
How I managed it:
1. Deleted almost every app
Click to expand...
Click to collapse
genius.

they kept auto installing after flashing a new Rom lol
Im no expert but I figured I had to uninstall them before flashing

How I got 70+ hours of battery
1. Used CM6 Nightly
2. Used TweakTool(still in development http://tweaktool.com but it is the same as collin_ph's battery tweak essentially)
3. Used Decad3nce's experimental BFS kernel
4. Left 3g off unless I needed it
5. ????
6. PROFIT

I have 3g on all the time

The best I have pulled on my phone was 32 hours with twenty percent left this was with light to avg use with 3g turned off, unless o needed it....
I was on nightly 8/24 with uncapped kernel #8
Sent from my Froyo Hero

gurusux said:
I have 3g on all the time
Click to expand...
Click to collapse
Why? You can use an app like JuiceDefender to set it to turn on every 5 or 10 minutes to allow updates and set it to keep 3g on when the screen is on, could save you some battery

Sounds good ill try it. Thanks
Sent from my HERO200 using XDA App

Juice defender destroyed my phones battery life, even when I configured it all, it just drained, drained, drained.
Auto brightness is a waste of battery to me, i set it to 30% and forget it.
My phone makes it through the day, thats all I need. About 30% at 10 pm, off the charger at 7am.

Zardos66 said:
Juice defender destroyed my phones battery life, even when I configured it all, it just drained, drained, drained.
Auto brightness is a waste of battery to me, i set it to 30% and forget it.
My phone makes it through the day, thats all I need. About 30% at 10 pm, off the charger at 7am.
Click to expand...
Click to collapse
Same here. With Juice Defender I was lucky if my charge held through my lunch break at work.
The biggest battery save for me is to turn off 3G until I have to use it. By the time I go to bed I still have 40-50 percent charge on my phone.

Tried juice defender for around 5 hours and didn't work. At 30% said I had 2 more hours left. During the first hour after setup it drained 9%. That's a lot. Uninstalled
Sent from my HERO200 using XDA App

Well fear not citizens, for soon, tweaktool will be released (hopefully soon, depends on how much time i have laying around to program it) and will work for any phone, any rom, etc. Also gonna have new features eventually like 3g off when screen off, and a few other things, spread the word http://tweaktool.com

strange I've always had good luck with juice defender. Lately though with how well cm6 is on the battery I've been setting juice defender to only shut off 3g when the screens off and turn it on every hour for 5 minutes to update. My batter life is pretty amazing right now.

tomatosoup said:
Well fear not citizens, for soon, tweaktool will be released (hopefully soon, depends on how much time i have laying around to program it) and will work for any phone, any rom, etc. Also gonna have new features eventually like 3g off when screen off, and a few other things, spread the word http://tweaktool.com
Click to expand...
Click to collapse
Interesting. I want in! Love playing with new things and tweaking, sounds like your compiling all the best parts of the best battery saving tweaks. Definitely gonna keep an eye on this.

tomatosoup said:
Well fear not citizens, for soon, tweaktool will be released (hopefully soon, depends on how much time i have laying around to program it) and will work for any phone, any rom, etc. Also gonna have new features eventually like 3g off when screen off, and a few other things, spread the word http://tweaktool.com
Click to expand...
Click to collapse
sounds great... cant wait......

man you must have a crappy battery then. all i id was turn my 3g off when i dont need it. I had wifi going, gps going(and used both quite a bit). Made a handful of phone calls lasting about 10 minutes each. i have 16/hrs 49/min since unplugged right now and im at 77%. I must be doing something different cuz i can have my phone off the charger for around 2 days and still have about 20% left before i charge it.

PlagaDeRock said:
Interesting. I want in! Love playing with new things and tweaking, sounds like your compiling all the best parts of the best battery saving tweaks. Definitely gonna keep an eye on this.
Click to expand...
Click to collapse
Well really it's more of an upgraded version of the battery tweak featuring a gui and some other new things.

tomatosoup said:
Well really it's more of an upgraded version of the battery tweak featuring a gui and some other new things.
Click to expand...
Click to collapse
Can't wait to try it! I am hard (IMO) on my phone 4-5hrs.talking maybe more 5-10 texts and my music running almost all day tho it switches off on a call,m lucky if I get 6-7 hrs out of it. I am in a truck all day, so charging is no problem. Thanks for hard work!

I'm currently sitting at 50% after 26 hours of battery life and medium usage... CM6RC1, stock kernel and collins_ph tweak

tomatosoup said:
Well fear not citizens, for soon, tweaktool will be released (hopefully soon, depends on how much time i have laying around to program it) and will work for any phone, any rom, etc. Also gonna have new features eventually like 3g off when screen off, and a few other things, spread the word http://tweaktool.com
Click to expand...
Click to collapse
Put me on your tester list, please!

[ICS] We need your help... Battery life...

Since the beginning of Android one thing has always been an issue with some of the greatest ROMs.
........................Battery life.
Every day lives are drained away by the pleasures and features of such fantastic ROMs... and such things at time seem so hard to bare that we try to change the lives of our battery by going to a different ROM.
So now you have a chance to make a difference, nay, an opportunity to change the lives of many...
This thread is strictly for how to save Battery life. CM9/AOKP have amazing battery life by themselves (but yet can always be made better) But for those on MIUI (Not so great battery life) this will be really useful.
Understand that everyone's device is different and although you may get 15 hours off MIUI/AOKP/CM9 others may only get 4 from them.
Post what it is that helps you achieve maximum Battery life. You may be the one to solve the cure to wowhowdidmybatterylifedroptwentypercentinanhourosis.
Be sure to include:
1. ROM
2. Kernel
3. Tweaks that have been applied through ClockworkMod
4. Apps used to save life
5. What battery you use
6. How long your life lasts
7. Anything else that you think may help

Eclair
Just Eclair
Any Eclair
Shoot me......
But seriously, disabling 3g on ICS saves a ton of battery life.
Sent from my SPH-D700 using Tapatalk 2

marcusant said:
Eclair
Just Eclair
Any Eclair
Shoot me......
But seriously, disabling 3g on ICS saves a ton of battery life.
Sent from my SPH-D700 using Tapatalk 2
Click to expand...
Click to collapse
Uhhh,,,on ANY ROM...but not a practical solution.
I think the OP is looking for more practical solutions where they are not disabling major features of the smartphone.

kennysvgp08 said:
Be sure to include:
1. ROM
2. Kernel
3. Tweaks that have been applied through ClockworkMod
4. Apps used to save life
5. What battery you use
6. How long your life lasts
7. Anything else that you think may help
Click to expand...
Click to collapse
1. CM9, although i think aokp does better.
2. Samurai Kernel, although just about any other ICS kernel should help. The biggest thing that you can change between kernels is the Governor and I/O depending on these two will determine how the CPU runs and in effect will determine battery life. Conservative is just about the best for battery life. If you need slickness and not too worried about battery Ondemand. If you want the best of both worlds i Think Wheatly is a good compromise. Also I/O , Sio is "simple" but VR is flash based so it tends to be the best. Otherwise Noop/Deadline. Also voltage.. undervolting will help limit the amount of well voltage to the CPU. So the lower you can get it the better.
3. Dont have tweaks i apply through CWM but i Run the V6 Supercharger, 3G turbocharger(optional), and the Kick Ass Kernelizer from Zeppelin.
4. I cannot stress this enough, Apps that say they save battery... run... which uses RAM and Resources... meaning its running trying to save you battery, Using battery. Which is stupid... and useless.
5. I have two a 3500Mah and the stock 1.5 year old 1500mah.
6. Typically with 3 hours of display over a period of 15hours (1500 mah) and around 5 hours of display over a period of 22 hours (3500 mah). However this is on wifi, 3g would deduct these a pretty good amount if you have sucky speeds.

He needs to get over it... lol. The only thing that truly saves battery life is managing your connections. There is no magic bullet unfortunately.

PLEASE! Don't tell us to turn off data and never sync the phone. Obviously if you don't use the phone the battery will last forever. I need a phone that can do the following:
Receive emails and texts as they are sent. (I use exchange push)
Last 18 hours on a standard or 1800 mAh battery.
I can just barely make that with stock FC09, I'd love to run ICS but with either CM9 or AOKP I barely make 10 hours.

schnowdapowda said:
He needs to get over it... lol. The only thing that truly saves battery life is managing your connections. There is no magic bullet unfortunately.
Click to expand...
Click to collapse
Why must people post unhelpful comments such as the one above? I don't understand the logic there...
anyways since this was aimed at miui I get pretty good battery life with it... (3.5 hours screen on time) nyan v5 ftw! No special features... uv a lot (won't list my settings cuz every phone is different) and no oc... used to use jd but, it saves more battery if you just switch things off manually... really though until I flashed nyan my battery life was atrocious, but now just about on par with the peoples rom (4.5 to 5 hours screen on time!) Oh yeah, all this with the stock battery...

poit said:
PLEASE! Don't tell us to turn off data and never sync the phone. Obviously if you don't use the phone the battery will last forever. I need a phone that can do the following:
Receive emails and texts as they are sent. (I use exchange push)
Last 18 hours on a standard or 1800 mAh battery.
I can just barely make that with stock FC09, I'd love to run ICS but with either CM9 or AOKP I barely make 10 hours.
Click to expand...
Click to collapse
On aokp with 1800 mAh i can do about 3Hours of screen on time and 15 Hours of battery life and my phone was awake 75% of the time.
Screenie was at 15%
This was stock Everything Except ROM haha

XxLostSoulxX said:
On aokp with 1800 mAh i can do about 3Hours of screen on time and 15 Hours of battery life and my phone was awake 75% of the time.
Screenie was at 15%
This was stock Everything Except ROM haha
Click to expand...
Click to collapse
Think about if your screen was on while the device was awake..your time would be cut in half
Sent from my SPH-D700 using XDA

Oh my good golly gosh.
I just realized the best battery life I ever got was on DK28.
So take that. Let's go Frankenstein.
1. CM9 KANG June 02 build.
2. Stock
3. Services for V6 and Search Key Remap
4. Ha!
5. Stock. Came with device...need new one.
6. Depends on use. But I usually get the estimated six hours consistently.
7. If you're going to use a task killer just use the built in one. Overclocking is bad, and in my experience so is undervolting. GTalk, official Facebook application(especially this. Even with notifications off it still is always going), G+, and more are always running and are a drain. No live wallpapers, and no widgets that require constant updating. As much black as possible. Don't use third-party batteries. Obviously turning off 3G, 4G, sync, and such will dramatically increase your battery life.
WAIT! Why am I writing this? There is a freaking optimization guide. Why does this exist? For ****s sake.

Running AOKP build 36, stock, FC09 modem 15 hours running takes me down to 50% batt hour of screen time, constant crappy wifi connection in an area with crappy cell signal sync for everything but email and g chat is every 2 hours (weather and all that). Big thing to save batt for me was turning down my screen brightness. I was also getting crappy battery life till i let this rom install run the battery down to 5% twice.

flastnoles11 said:
Why must people post unhelpful comments such as the one above? I don't understand the logic there...
anyways since this was aimed at miui I get pretty good battery life with it... (3.5 hours screen on time) nyan v5 ftw! No special features... uv a lot (won't list my settings cuz every phone is different) and no oc... used to use jd but, it saves more battery if you just switch things off manually... really though until I flashed nyan my battery life was atrocious, but now just about on par with the peoples rom (4.5 to 5 hours screen on time!) Oh yeah, all this with the stock battery...
Click to expand...
Click to collapse
By no means was I saying never enable your 3g/4g.. but the fact remains that the single best way to conserve your battery life is to be smart about managing your connections. I.e. not leaving it on ALL day and to only turn sync on when your actually checking your e-mail.. be that through an app like juice defender or manually toggling. If that's not more helpful than what you posted (UV a lot and don't overclock??? Duh.) than my bad bro!

darkierawr said:
Oh my good golly gosh.
I just realized the best battery life I ever got was on DK28.
So take that. Let's go Frankenstein.
Click to expand...
Click to collapse
Something we can all get behind here... I remember I used to get 24+ hours on froyo w/o customs kernels. Le sigh..

ÜBER™ put's it pretty well.
ÜBER™ said:
1. CM9, although i think aokp does better.
Click to expand...
Click to collapse
-CM9 still seems cleaner, but AOKP seems better.
ÜBER™ said:
2. Samurai Kernel, although just about any other ICS kernel should help. The biggest thing that you can change between kernels is the Governor and I/O depending on these two will determine how the CPU runs and in effect will determine battery life. Conservative is just about the best for battery life. If you need slickness and not too worried about battery Ondemand. If you want the best of both worlds i Think Wheatly is a good compromise. Also I/O , Sio is "simple" but VR is flash based so it tends to be the best. Otherwise Noop/Deadline. Also voltage.. undervolting will help limit the amount of well voltage to the CPU. So the lower you can get it the better.
Click to expand...
Click to collapse
-Spot on.
ÜBER™ said:
3. Dont have tweaks i apply through CWM but i Run the V6 Supercharger, 3G turbocharger(optional), and the Kick Ass Kernelizer from Zeppelin.
Click to expand...
Click to collapse
-I don't use the supercharger, but I do apply the same oom ram mods. These help close unused apps when they exceed the applied limit. Based on my experience, it's kept apps under control.
ÜBER™ said:
4. I cannot stress this enough, Apps that say they save battery... run... which uses RAM and Resources... meaning its running trying to save you battery, Using battery. Which is stupid... and useless.
Click to expand...
Click to collapse
-THIS +9000! An app that spends all of it's time stopping other apps is wasting just as much "battery." I maintain, Advanced Task Killer, with NO, I repeat NO AUTOKILL. Set a widget on your home page, tap it occasionally to make sure everything is closed. Same effect as the built in task manager, but one single convenient tap.
ÜBER™ said:
5. I have two a 3500Mah and the stock 1.5 year old 1500mah.
Click to expand...
Click to collapse
-I use two stock 1500mah batteries and one 3500mah. My wife has the same. All are about 1.5 years old now.
ÜBER™ said:
6. Typically with 3 hours of display over a period of 15hours (1500 mah) and around 5 hours of display over a period of 22 hours (3500 mah). However this is on wifi, 3g would deduct these a pretty good amount if you have sucky speeds.
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Click to collapse
-These numbers are pretty much the same for me. I almost always average 3 hours display on the stock battery between games and internet. 5-6 hours on the 3500, but I'm pretty sure it's not reaaallly the 3500mah it claims to be... . I NEVER turn off wifi or 3G, but google autosync is off until I edit my contacts.

schnowdapowda said:
By no means was I saying never enable your 3g/4g.. but the fact remains that the single best way to conserve your battery life is to be smart about managing your connections. I.e. not leaving it on ALL day and to only turn sync on when your actually checking your e-mail.. be that through an app like juice defender or manually toggling. If that's not more helpful than what you posted (UV a lot and don't overclock??? Duh.) then my bad bro!
Click to expand...
Click to collapse
I don't turn off my connections at all and get great battery life... and seens how the op states don't say anything about disabling 3g or anything id say your comment was the least helpful on the thread... but at least you tried... don't get into a battle of witts with me, I'm afraid your unarmed...

flastnoles11 said:
I don't turn off my connections at all and get great battery life... and seens how the op states don't say anything about disabling 3g or anything id say your comment was the least helpful on the thread... but at least you tried... don't get into a battle of witts with me, I'm afraid your unarmed...
Click to expand...
Click to collapse
Firstly, I'm not trying to get into a pissing match with you. Its pointless. Secondly, the op makes no mention whatsoever of connection status. Thirdly, while you might get decent battery life w/o doing it.. I guarantee you'd do better if you did. Straight facts.
Edit: I am armed. With a small slide out keyboard.

Please follow the format specified by the OP. List the 7 items. Bickering in this thread will not be tolerated.
Thank you for your cooperation
Friendly Neighborhood Moderator
Sent from my PantechP4100 using xda premium

kennysvgp08 said:
Be sure to include:
1. ROM
2. Kernel
3. Tweaks that have been applied through ClockworkMod
4. Apps used to save life
5. What battery you use
6. How long your life lasts
7. Anything else that you think may help
Click to expand...
Click to collapse
1. CM9
2.ShadowKernel (I find nyan colonel to be a little more draining) SIO, conservative
3. None
4.System Tuner Pro configured to UV, under clock to 400mhz on screen off, to close apps that don't automatically restart themselves, configure "auto-kill" so its not as aggressive with killing apps that just stay on, and a few sysctrl edits that I honestly don't think make a difference.
5.stock epic 1500 mAh, my sprint store wouldn't give me an sgsII battery
6. 12-18 hrs depending on use, though it has definitely drained quicker
7.be easy on data! (There kennyG) turn off wifi when your not near your networks, turn off mobile data, Bluetooth, and autosync when your not needing it. (Unless you absolutely need PUSH email for your job or whatever though honestly as far as my job goes if its important enough for me to need the message immediately they will simply dial my phone number. Yeah I'm old fashioned.

- Cm9
- Shadow kernel
- No tweaks
-1800 D710 battery
- I get 15-20 hours depending on how much music I stream during the day.
- I got the biggest boost by using the profiles in CM9 to optimize my connections and syncing depending on where I'm at during the day. I have Wifi at work and home, so I have it toggle my data off during that time period and vice versa when I'm mobile.
Sent from my SPH-D700 using xda premium

Using AOKP with shadow kernel.
Best thing I did to help with battery life was to turn off all notification options in the FB app. And I set haxsync to download photos only when plugged in.
sent from a secret underground bunker