Database Users

WTF is up with the EVO battery!

first off, i love this phone. no joke, but the battery is well...laughable to say the least. on my HD2 running android, i get double the battery life and they HD2's battery is a 1200 battery, the EVO'S is a 1500. and android boots off the SD CARD and has NO POWER MANAGEMENT on HD2'S. my evo dropped to 54 percent battery today in 3.5 hours. no wifi, no bluetooth, no GPS and no 4G...all im saying is... WHAT THE ****!

It gets better. Load up some custom kernals + setcpu and you'll get great life. I'm running CM6 + snap 8.2 and it lasts the whole day with moderate use.
Sent from my PC36100 using Tapatalk

There is plenty of info on battery issues with EVO.
First... I would recommend rooting.
Second, use the FRESH build based off the new OTA leak.
Finally, change Settings / Mobile Networks / [uncheck] Enable Always-on
Then... ALWAYS keep your WiFi radio on. Add your home network if you have one... and wherever you go, add whatever hotspots you are in proximity of.
And if you ever consider doing a new build, backup your WiFi access point data via Titanium Backup before you do.
That should just about cover it... You will get a full day of use PLUS some out of that battery.

Award Tour said:
It gets better. Load up some custom kernals + setcpu and you'll get great life. I'm running CM6 + snap 8.2 and it lasts the whole day with moderate use.
Sent from my PC36100 using Tapatalk
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i am im running KINGS #9 kernal, regularly clocked at 499200 min and 65820 max, and when the screen is off i have it set at 245 min and max... im gonna buy a nother battery. one of those 3500 batterys...they go for like 10 bucks on ebay

edufur said:
There is plenty of info on battery issues with EVO.
First... I would recommend rooting.
Second, use the FRESH build based off the new OTA leak.
Finally, change Settings / Mobile Networks / [uncheck] Enable Always-on
Then... ALWAYS keep your WiFi radio on. Add your home network if you have one... and wherever you go, add whatever hotspots you are in proximity of.
And if you ever consider doing a new build, backup your WiFi access point data via Titanium Backup before you do.
That should just about cover it... You will get a full day of use PLUS some out of that battery.
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Click to collapse
i rooted my phone within 2 hours of purchasing it...i will look into what you mentioned later. im gonna condition my battery for the 4th time in 5 days..

PS those 3500mah batteries on ebay for 10$ and the same 2000mah batteries.
If you get one, get a seido. I just bought 2x1500mah batteries from tuttoit, great backup batteries... charger too 9.96$ shipped.
Oh and I am getting great battery life with snap and cyanogen's rom.

yeah i am going to look into all the batteries, and i love sense, that is why im not on CM6. all my other phones are running it (G1, MT3G HD2). now that i have a phone that runs sense naturally, i dont wanna change it. i love sense! and this thread was just a way for me to vent about my crappy battery.... lol

oshizzle1991 said:
i rooted my phone within 2 hours of purchasing it...i will look into what you mentioned later. im gonna condition my battery for the 4th time in 5 days..
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When you rooted it, did you also flash the newest radios? Trust me on the fresh build.. it rocks... but also, most importantly, use WiFi whenever possible... and turn off "always update"... those are all the most important.

edufur said:
When you rooted it, did you also flash the newest radios? Trust me on the fresh build.. it rocks... but also, most importantly, use WiFi whenever possible... and turn off "always update"... those are all the most important.
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yeah im running the latest radio, and i dont have wifi where i live/ work =/

is it really that hard to search for info ? there is a post about battery live everyday some times more

im not saying i need info, im just venting right now. you buy the BEST phone available, youd figure the battery would be the best too right?

After about 10 hours I was at 50% with moderate use.... not too shabby. I have always-enabled turned off, setCPU at 1190/245 then <85% 921/245 <70% 806/245 <55% 729/245 <40% 615/245 <25% 499/245 and JuiceDefender

DirtyShroomz said:
After about 10 hours I was at 50% with moderate use.... not too shabby. I have always-enabled turned off, setCPU at 1190/245 then <85% 921/245 <70% 806/245 <55% 729/245 <40% 615/245 <25% 499/245
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lucky bastard... lol

oshizzle1991 said:
lucky bastard... lol
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lol these phones are great but until we see some great advancement in battery technology, the battery life wont be

DirtyShroomz said:
lol these phones are great but until we see some great advancement in battery technology, the battery life wont be
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that is exactly what im trying to say man... lol.

oshizzle1991 said:
im not saying i need info, im just venting right now. you buy the BEST phone available, youd figure the battery would be the best too right?
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No when I got my evo I was clearly.told and shown a doc from sprint (the manager over mobile area is a buddy) to tell everyone to expect 6 hours of battery life with normal use. I was able to squeeze out 8 - 9 myself. I know people say conditioning the battery is a waste of time . IMHO do it I noticed a nice increase in battery life. I have to laugh at people who get pissy about battery life when they are holding a mini PC.
Myself i avg. 18-20 hours a charge with normal use. I have 2 backup batteries so I don't worry to much about juice
from the fade

I really dont feel the Evo is a bad phone h, hell I love the damn thing . I just feel HTC kinda screwed up things in the process . One telling customers to expect 6 hours of use is alittle of a joke . Who the hell only works six hours a day ? Or is that six hours also include you getting up getting ready for work then coming home before you go to bed ? Second , its pretty clear the Evo has a bug in its charging system . People have reported that using stand alone wall chargers to charge the batteries they are getting improved life out of the batteries (Sorry I have never removed a battery from any cellphone I have had in the past to charge it and not gonna start now) . Third yes the HTC Evo is litterally a pocket pc with capabilities most phones dream of having . Then why the hell did they give it a 1500mah battery ? Thats like strapping a 55 gallon drum of fuel to the space shuttle and saying "Yeah this outta make it" . Sorry for my rant had to get it out (plugs phone in to charge again) LOL

OP, I like you, you're funny
A couple things..
1) Why do you have your CPU governed below 700mHz while awake??? You won't save battery that way, your phone runs at a gHz, use it!!
2) Setting your min/max both at 245 on sleep will actually decrease your battery life and your phones wake up performance, maybe not much. Capping your phone at 245 when asleep makes it a harder transition to awake because it makes that sudden jump when you wake it up. Setting your max somewhere over 600 on asleep, and setting it to OnDemand will ease the transition from sleep to awake.
There is no shortage of battery life tips but here's one: The auto rotate function polls for g-sensor status like once every 15 milliseconds. I use a switch on my homescreen to turn it on when I want it and keep it locked in portrait when I don't need it. This will help conserve some juice
I'm only scratching the surface here, I'm sure you do realize what a wealth of info there is on the subject already. FWIW, I use the crap out of this phone and I consistently get 20+ hours out of a charge. Good battery performance is achievable!

nebenezer said:
OP, I like you, you're funny
A couple things..
1) Why do you have your CPU governed below 700mHz while awake??? You won't save battery that way, your phone runs at a gHz, use it!!
2) Setting your min/max both at 245 on sleep will actually decrease your battery life and your phones wake up performance, maybe not much. Capping your phone at 245 when asleep makes it a harder transition to awake because it makes that sudden jump when you wake it up. Setting your max somewhere over 600 on asleep, and setting it to OnDemand will ease the transition from sleep to awake.
There is no shortage of battery life tips but here's one: The auto rotate function polls for g-sensor status like once every 15 milliseconds. I use a switch on my homescreen to turn it on when I want it and keep it locked in portrait when I don't need it. This will help conserve some juice
I'm only scratching the surface here, I'm sure you do realize what a wealth of info there is on the subject already. FWIW, I use the crap out of this phone and I consistently get 20+ hours out of a charge. Good battery performance is achievable!
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20+ Damn, what rom and kernel are you using? Im kinda having the same problems too. Im limiting my phone tryin to get better batt, that ****ing sucks. I just want to use my damn phone, without much sacrifice. Thanks

Why the hell do you have 4 phones running the same OS?

How To Get At Least 15+ Hours of Battery Life

Alright, so here's how it goes. I happen to be really anal about battery life, and if I come home from a 8 hour day and I have less than 50% of battery life, it just bothers me.
So, with a bit of reading, I have my phone set up to where I get almost 24 hours of battery life. So here are the steps I took to achieve that:
Have all the basics down:
Be on the lowest brightness (because even that is extremely bright) unless in extraordinary situations.
Always use wifi over 3G/2G and use bluetooth and the GPS as little as possible.
Also don't install any task killers - they do more harm than good.
1. Flashthe Bionix ROM. For those of you who haven't done it yet, you are missing a lot. The speed of ROM is incredible and has a lot of little tweaks that will improve battery life. Don't be afraid to root and flash these ROMS - they have been throughly tested and proved to almost always solve problems instead of creating new ones! Make sure to download the Bionix ROM that runs on the J12 modem. Pick it up here:
HTML:
http://forum.xda-developers.com/showthread.php?t=782027
2. Wipe battery stats!!! This one is without a doubt the most critical. I did this and my battery life increased by more than 2X. Make sure you follow the instructions that state:
1. Charge phone completely, leave plugged into power
2. Boot into recovery
3. Wipe battery stats
4. Reboot
5. Remove power cable
6. Drain that sucker all the way
7. Recharge fully
8. Rejoice!"
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To do step 6, I had my phone at full brightness with Bluetooth and GPS on, with Pandora running all while recording a HD video. It drained it pretty damn quick lol.
3. Install Autokiller from the market, and apply the Aggressive preset. This will really lower CPU usage, and really speeds up your phone. This is NOT a task killer, this just allocates memory more harshly.
4. Install JuiceDefender, and have it enabled at all times... A lot of people have had mixed results with this. Mainly, it will turn of data while your phone is asleep, but turning data on and off is a battery drainer. Juicedefender will automatically recognize what settings will produce the most preservation of battery for your phone, so leave it at the default settings. It all depends on how often you use your phone, and what your data connection is like in the areas you reside. It does great things for most people, so I really suggest you try it out. Make sure you download the "battery" version and not the beta.
5. Have all apps/widgets that regularly stream information to the lowest interval possible. Let's be honest, you don't need your Facebook widget to be refreshing every 5min, so set it at an hour.
With all this done, I am at this very moment at 44% battery with a little over 13 hours of use. Even if I had my phone asleep the entire time, 24 hours is a lot better than what most people would seem to get. My day usually consists of 20min of talk time, 30 min of texting, 40 min of browsing, 30 min of gaming, 1 hour of music playing, and a bit of picture taking/editing. My phone is asleep for a long periods of time while I am at school. Yes I don't use my phone as heavily as some do, but if it guarantees me a full day of battery, I don't mind too much.
I don't really see how this can't work for others. We have the exact same hardware, and the exact same battery. You may use the phone more than I and pump out a few hours less, but still get over 15 hours.
Hope this helped!

nearblack said:
Alright, so here's how it goes. I happen to be really anal about battery life, and if I come home from a 8 hour day and I have less than 50% of battery life, it just bothers me.
So, with a bit of reading, I have my phone set up to where I get almost 24 hours of battery life. So here are the steps I took to achieve that:
Have all the basics down. Be on the lowest brightness (because even that is extremely bright) unless in extraordinary situations. Always use wifi over 3G/2G and use bluetooth and the GPS as little as possible. Also don't install any task killers - they do more harm than good.
1. Flashthe Bionix ROM. For those of you who haven't done it yet, you are missing a lot. The speed of ROM is incredible and has a lot of little tweaks that will improve battery life.
2. Wipe battery stats!!! This one is without a doubt the most critical. I did this and my battery life increased by more than 2X. Make sure you follow the instructions that state:
To do step 6, I had my phone at full brightness with Bluetooth and GPS on, with Pandora running all while recording a HD video. It drained it pretty damn quick lol.
3. Install Autokiller from the market, and apply the ULTIMATE preset. This will really lower CPU usage, and though it the most extreme of all presets, I haven't had any issues. This is NOT a task killer, this just allocates memory more harshly.
4. Install JuiceDefender, and have it enabled at all times... A lot of people have had mixed results with this. Mainly, it will turn of data while your phone is asleep, but turning data on and off is a battery drainer. It all depends on how often you use your phone, and what your data connection is like in the areas you reside. It does great things for most people, so I really suggest you try it out. Make sure you download the "battery" version and not the beta.
5. Have all apps/widgets that regularly stream information to the lowest interval possible. Let's be honest, you don't need your Facebook widget to be refreshing every 5min, so set it at an hour.
With all this done, I am at this very moment at 44% battery with a little over 13 hours of use. Even if I had my phone asleep the entire time, 24 hours is a lot better than what most people would seem to get. My day usually consists of 20min of talk time, 30 min of texting, 40 min of browsing, 30 min of gaming, 1 hour of music playing, and a bit of picture taking/editing. My phone is asleep for a long periods of time while I am at school. Yes I don't use my phone as heavily as some do, but if it guarantees me a full day of battery, I don't mind too much.
I don't really see how this can't work for others. We have the exact same hardware, and the exact same battery. You may use the phone more than I and pump out a few hours less, but still get over 15 hours.
Hope this helped!
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I would specify what settings you use on JuiceDefender, because it really depends on what settings you use and such. You made this guide to help people, so don't leave them wondering.
I would include other ways to save battery life, even if they have been said over and over, just so no one misses anything.
Also, with Bionix you will probably want to only recommend the JI2 modem, because it is not universally accepted that JI6 helps battery life, in fact it is quite the contrary.

Mark271 said:
I would specify what settings you use on JuiceDefender, because it really depends on what settings you use and such. You made this guide to help people, so don't leave them wondering.
I would include other ways to save battery life, even if they have been said over and over, just so no one misses anything.
Also, with Bionix you will probably want to only recommend the JI2 modem, because it is not universally accepted that JI6 helps battery life, in fact it is quite the contrary.
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I am running JI6 with bionix, and im running on 14 hours at 45%

DaSmittyman said:
I am running JI6 with bionix, and im running on 14 hours at 45%
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Good job. Proud of you.

Mark271 said:
Good job. Proud of you.
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lul, I added the JI2 bit to the post. You are right, that modem has proven to perform more efficiently.

Near black excellent
Near black excellent Written play by play well done !

I'm bone stock just running LP and I'm pretty sure I get better battery than that. My buddy with a Fascinate has been getting excellent battery life too. Not really sure how some of you guys are able to kill it so quickly
*shrugs*
Sent from my SGH-T959 using XDA App

Its easy. They play with their phones constantly, they leave 3g on, Wifi on. They stream pandora all day.
lolcopter said:
I'm bone stock just running LP and I'm pretty sure I get better battery than that. My buddy with a Fascinate has been getting excellent battery life too. Not really sure how some of you guys are able to kill it so quickly
*shrugs*
Sent from my SGH-T959 using XDA App
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kizer said:
Its easy. They play with their phones constantly, they leave 3g on, Wifi on. They stream pandora all day.
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Aside from steaming pandora all day I'm doing all that too. Wifi always on, gps navigation, watching youtube/nfl app videos, twitter/email throughout the day, forums, etc. The only way I can kill my phone anywhere near that fast is hours of constant video steaming over 3g
Edit: oh, and angry birds all day every day, haha
Sent from my SGH-T959 using XDA App

kizer said:
Its easy. They play with their phones constantly, they leave 3g on, Wifi on. They stream pandora all day.
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lolcopter said:
I'm bone stock just running LP and I'm pretty sure I get better battery than that. My buddy with a Fascinate has been getting excellent battery life too. Not really sure how some of you guys are able to kill it so quickly
*shrugs*
Sent from my SGH-T959 using XDA App
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Agreed, I moderately use my phone the whole day and I am left with 25-30% after a 15 hour day. Its not necessary to have max brightness, 3g, bt, syncing, wifi, tons of widgets on all day.

My secret was just getting another battery sent to me. The one that came with teh phone jus wasnt all that great. New one lasts 4 to 5 hours longer doing the same things.
I leave bluetooth on all the time. Never turn it off. Only turn on GPS when needed. And at work where i dont usually get wifi, i leave 2G on most of the time unless i need it to be faster for something, but most times, 2G is fine for tweets and emails. Of course it all depends on how much im using it. I use it if i have to. If the battery is lower than usual when i get home, who cares? I charge it up over night every night anyways. I'm not anal that way.
Most ive got for a day is 18 hours. Had 17 or so many times and had a little over 16 hours today w/ 10% left but plugged it in anyways.

My secret Is to leave the music playing overnight. With headphones.
Sent from my SGH-T959 using XDA App

Lol. I have a HTC legend with stock rom and i just checked running time. I have one day and three and a half hours....at 55% battery
Sent from my HTC Legend using XDA App

=D
thank you! I will try this out. =]

I wanna put Bionix on my phone so bad, but if I screw up and brick the phone, then no more Vibrant for me. :/ need a better job imo.

Wearespacepeople said:
I wanna put Bionix on my phone so bad, but if I screw up and brick the phone, then no more Vibrant for me. :/ need a better job imo.
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It's really hard to screw up. (assuming you have made it though an educational system successfully)
Sent from my SGH-T959 using XDA App

Mark271 said:
It's really hard to screw up. (assuming you have made it though an educational system successfully)
Sent from my SGH-T959 using XDA App
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Hah, I think I'm taking this as a personal challenge. How about if I DO screw up you send me your Vibrant? Deal?

Wearespacepeople said:
Hah, I think I'm taking this as a personal challenge. How about if I DO screw up you send me your Vibrant? Deal?
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No, because this phone is unbrickable. You just need average reading comprehension and moderate computer literacy.
On a side note, the recommended autokiller setting is far too high. It kills anything after you exit out of it. (i.e. checking a text, it will kill the texting program after exiting) I lowered a few levels to see if I'll keep it.

added to the thread Mark. You are right, having it at such a high level will not only kill some running apps, but those apps will go onto restart, which kills battery. I think the "aggressive" setting is most suitable, or the lowest preset where your phone is still fast enough.

nearblack said:
...
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Interesting...great write up.
So would you say Bionix is the the best ROM for the Vibrant? There are so many ROMS's out there and I can imagine how it would confuse the heck out of those who are looking for the best ROM available to date for our phones.
What are your thoughts?

Best battery life rom

My girlfriends Evo battery life is horrible. She mainly just text a lot and surfs facebook. I need a rom to get her battery life to where she can make it at lease 8 hours before having to charge her phone.

cody0707 said:
My girlfriends Evo battery life is horrible. She mainly just text a lot and surfs facebook. I need a rom to get her battery life to where she can make it at lease 8 hours before having to charge her phone.
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A 3500 battery...nuff said

Savage-Mod
I would get Savage mod 1.1 with savaged zen 1.1.0 cfs havs sbc. I've been using it for the past week and it has been great. The texting and phone it self is faster and smoother than any rom i've used and i've been through most. I am currently on 65%, its been unplugged for 8 and a half hours. I understand that others may have better battery live but i'm using my stock battery, which is great cause I saved money and didn't add any thickness. PM if you have any questions.

I'm on Myn's Warm Z with Netarchy 4.3.2 cfs, sbc, havs more. Even with heavy usage (including video streaming and web surfing) my battery lasts a good 10 hours. I can't recommend this combo enough. I had horrible battery life with the stock kernel on Warm Z. Only thing is, depending on her hardward build, you may have to test a couple different kernels.

Easy answer:
EViO 2, SetCPU to underclock to 921, remove sense and use ADW.
Long answer:
To really figure it out, you'll have to try a bunch of diff ROM/Kernel combos for a couple days each.
I would try with CM7, the ROM from "yet another AOSP ginger ROM," Salvage-Mod, Savaged-Zen(Mod) RC2, Miui and whatever sense ROMs you want.
Also, Juice Defender and Autostarts will help you.

I recommend CM7 with a Savaged-Zen ROM CFS- SBC. Even after flashing a new nightly, I avg. 13-14 hours the first day before the kernel is broken in. Best of all Roms that I've tried and I really use my phone (data & mp3). Forgot to mention, I use Setcpu with profiles.

redsoxfan320 said:
I would get Savage mod 1.1 with savaged zen 1.1.0 cfs havs sbc. I've been using it for the past week and it has been great. The texting and phone it self is faster and smoother than any rom i've used and i've been through most. I am currently on 65%, its been unplugged for 8 and a half hours. I understand that others may have better battery live but i'm using my stock battery, which is great cause I saved money and didn't add any thickness. PM if you have any questions.
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You saved yourself 13 dollars and 6 mm...my god!

iitreatedii said:
You saved yourself 13 dollars and 6 mm...my god!
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Let's face it: women have a better sense of style than us dudes, and no chick in their right mind would put up with having a hideous cinderblock of a phone. 6mm might as well be an inch when it comes to stuffing a phone into her jeans. In the interest of keeping our women looking fine as hell, let's find software solutions to battery life
To the OP, try this first: go into settings/wireless and networks and uncheck enable always on mobile data. When I was on a stock Evo, this helped me immensely with battery life. Also, uninstall any task killers she has. Check what programs are syncing with the internet too, it's really just data use that eats up battery life with these phones.
Also, post up a screenshot of her battery use screen, maybe we can help figure out what the drain is Even a stock evo running the latest Sprint update should get around 10 hours, minimum, with moderate use like facebook and texting.

thegregbradley said:
Let's face it: women have a better sense of style than us dudes, and no chick in their right mind would put up with having a hideous cinderblock of a phone. 6mm might as well be an inch when it comes to stuffing a phone into her jeans. In the interest of keeping our women looking fine as hell, let's find software solutions to battery life
To the OP, try this first: go into settings/wireless and networks and uncheck enable always on mobile data. When I was on a stock Evo, this helped me immensely with battery life. Also, uninstall any task killers she has. Check what programs are syncing with the internet too, it's really just data use that eats up battery life with these phones.
Also, post up a screenshot of her battery use screen, maybe we can help figure out what the drain is Even a stock evo running the latest Sprint update should get around 10 hours, minimum, with moderate use like facebook and texting.
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so you base your decision off the fact that your wife/girlfriend/friend will be holding your phone and will buldge out of her pocket...maybe YOU should be holding YOUR phone, but hey i guess im weird, my girl might hold my phone, but she doesnt stuff it in her pocket and walk around with it thats stupid, besides my girl puts everything in her pocketbook as most do, keeps the figure , at least thats what i tell her lol

I am running well with deck's rom (the "yet another gingerbread" rom), rc9 now, and the new savaged-zen kernel (1.1). The phone is running really well. I just tried the undervolting script and that made a few reboots, which never happened since I went aosp last month, so I removed that. battery life seems really good though. 1st run through on the latest kernel went from about 11pm last night until 6pm today with pretty good use. I expect as it settles in it should do well.

Juice defender should help immensely if all she does is text and fb
A drop of Chuck Norris's semen was placed on Android OS. We now have CyanogenMod.

iitreatedii said:
You saved yourself 13 dollars and 6 mm...my god!
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I'd pay to have my phone 6mm thinner. You can't argue personal opinion bud.

Using the latest savaged Zen rc2 with whatever it comes preloaded with. Its pretty beast.

cody0707 said:
My girlfriends Evo battery life is horrible. She mainly just text a lot and surfs facebook. I need a rom to get her battery life to where she can make it at lease 8 hours before having to charge her phone.
Click to expand...
Click to collapse
CM7 RC4 with Savage Zen 1.1.0 kernel, Seidio 3500mAh battery will give you DAYS of battery life if you use it moderately to little usage. With a stock battery you will still get over a day easily.
I have wifi on most of the day, live wallpaper (the smoke one), I DONT use any task killer (because it actually slows down my phone), Bluetooth is on and connected to my car whenever Im driving (at least 60 miles per day)
I believe that if I have to use airplane mode, turn off GPS, not use wifi, not use the phone to its full potential then I rather have a cheaper phone and get a laptop...
The screen shots below were made with STOCK battery because I wanted to know the real difference in battery life between the roms!
Note the usage... I listen to music, voice calls...
here is another comparisson...
I really hope this helps you find what you are looking for

Actually, lies, those screen shots were made with gginggerbread 6(which is based on CM7) with savage zen 0.2.something...
The following screen shots were made with the specs I mentioned in the previous post... Its possible that the battery has improved note the 10 hours of usage and only 12% spent and bluetooth usage

consistently mediocre battery life even after calibration and undervolt

I just can't seem to crack the battery life conondrum. I've calibrated (charge to 100%, wipe stats, then full cycle).
If I'm listening to music its consistently I'm sucking ~10% an hour, if idling ~4-5%. Which means I'm getting around same battery life as my old nexus one – mediocre, I end a working day with around 30-40%. If I want to go out after work i have to remind myself to charge during the day...
Right now I'm even running a mild setcpu undervolt (with faux123 kernel) and profile (screenoff max cpu 600mhz) but seeing not much improvement if any.
I am on gingerbread AT&T radio so thats not it either... any tips aside from 'use juice defender' (which I don't want to do as I want always on data instant push etc., I know juice defender basically shuts your data radio off)?
Note this is the same with stock gingerbread as well as the ROM and kernel I'm currently on (redpill, faux123 kernel)

I've done everything you have and i'm on a Bell Atrix....i have been looking into this for about a week or more and i just can't crack it either!!! it's driving me nuts and i have spent sooo many hours googling, searching xda and other sites and have tested MANY different methods and still can't seem to figure it out. For me i know its the phone idle...but what it is i can't tell, i have SystemPanel monitoring as as well as watchdog which i alternate with. Flashed the battery calibration fix and calibrated the meter blah blah blah....driving me nuts and i know its not a faulty battery because before i unlocked and flashed 2.3.4 i could get about 30 hours with heavy to moderate use!!!
For the love of god i wish a team of dev's would look into this!!!!!!!!

Honestly none of the faux kernels worked for me... Try gobstopper, stock kernel with watchdog was the only combo to give me good battery life. Not to mention lock sounds works properly, and its fast. All bell users should use it. Seriously... 19+ hours worth moderate usage.
phone idle is still high but it seems to be a slow drain.
Sent from my MB860 using XDA App

a.) not an option for me, AT&T phone
b.) I'm not seeing faux's kernel do any worse than stock kernel, I don't think its the kernel?
c.) yeah I tried system monitor as well, the highest process was opera at 3%.... 3 lousy percent lol

1. Calibrate your battery again (I have posted a guide in the General section)
2. Flash a kernel which allows overclocking, install SetCpu, add battery saving profiles (downclock to 500mhz on screen off, downclock to 800 mhz when battery less than 30%, downclock to 800mhz if temperature higher than 50C)
3. Freeze all MotoBlur bloatware (there's a guide in the general section)
4. Disable data and wifi unless you need it
5. Install Watchdog and set it up according to instructions I provided in my calibration thread.

xploited said:
1. Calibrate your battery again (I have posted a guide in the General section)
2. Flash a kernel which allows overclocking, install SetCpu, add battery saving profiles (downclock to 500mhz on screen off, downclock to 800 mhz when battery less than 30%, downclock to 800mhz if temperature higher than 50C)
3. Freeze all MotoBlur bloatware (there's a guide in the general section)
4. Disable data and wifi unless you need it
5. Install Watchdog and set it up according to instructions I provided in my calibration thread.
Click to expand...
Click to collapse
all your solutions he basically either already did (1 and 2), or stated he does not want to (#4) =P

dLo GSR said:
all your solutions he basically either already did (1 and 2), or stated he does not want to (#4) =P
Click to expand...
Click to collapse
Well, if you keep data or wifi turned on at all times, then there's no way you can have something more than mediocre battery life, sorry.
It's not the Atrix'es fault, its the brutal truth with all modern smartphones.

1 personally run ninja speed freak, i get amazing battery life. simply amazing, days on worth of battery!
it is not a kernel issue, i simply dont know exactcly what hack in particular gives ninja the amazing battery life. but im working hard to determing this so i can share it.

samcripp said:
1 personally run ninja speed freak, i get amazing battery life. simply amazing, days on worth of battery!
it is not a kernel issue, i simply dont know exactcly what hack in particular gives ninja the amazing battery life. but im working hard to determing this so i can share it.
Click to expand...
Click to collapse
Perhaps, bypassing MotoBlur sign in

I'm not signed into motorblur either.
I do turn off wifi when out, but bluetooth is normally on.
Sent from my MB860 using Tapatalk

wintermute000 said:
I'm not signed into motorblur either.
I do turn off wifi when out, but bluetooth is normally on.
Sent from my MB860 using Tapatalk
Click to expand...
Click to collapse
The people in this thread have listed all known steps to improving battery life.
If you really follow all of these guidelines and have bad battery life, you might want to try a battery replacement.
If you are sure your battery is not the problem, you might also want to try a couple of custom roms. Who knows maybe you will get lucky with one of them.

xploited said:
Perhaps, bypassing MotoBlur sign in
Click to expand...
Click to collapse
Is there any way to log off from motoblur once you are in so you can stay offline? Of course any connection that gets cut will increase battery life.

I don't understand all these battery life problems. Its got to be an app you are installing or your battery is buggered!
Admittedly when I first installed 2.3.4 OTA, battery life dropped like a stone, but I drained it flat, and then charged it up again and its been fine ever since.
I'm running on stock 2.3.4 without root, and I have quite a lot going on (IM's/Facebook/Twitter) and I can last well over a day and a half with moderate use, this includes sms and calls.

tehrules said:
I don't understand all these battery life problems. Its got to be an app you are installing or your battery is buggered!
Admittedly when I first installed 2.3.4 OTA, battery life dropped like a stone, but I drained it flat, and then charged it up again and its been fine ever since.
I'm running on stock 2.3.4 without root, and I have quite a lot going on (IM's/Facebook/Twitter) and I can last well over a day and a half with moderate use, this includes sms and calls.
Click to expand...
Click to collapse
Battery life is a very subjective issue. One person might be fine with the phone, while the other person will say battery life is terrible with the very same phone.
Besides the obvious drainage problems, it all depends on how you use the phone.

Honestly the best thing that worked for me was turning off "Syncing".
I currently have 3G on, BT on, ETC...
Syncing in the background killed my battery life. Now I usually make it through the day without the need for a top-off...
Sent from my MB860 using XDA Premium App

Im in stock gingerbread and battery life is definitely worse than on stock 2.2.2 and and im basically running the same Apps. I am a heavy user and I used to drop 10% per hour. Switch on at 7am and by 5pm I was changing battery. Now I am switching around 3pm.
That's why I have 3 batteries!
I still think its better than nearly every other device I have owned but that nay be because battery is larger. I dont know why they don't design to put in 2400 mah batteries (my treo 650 had one!).
Sent from my MB860 using XDA App

ekerbuddyeker said:
Im in stock gingerbread and battery life is definitely worse than on stock 2.2.2 and and im basically running the same Apps. I am a heavy user and I used to drop 10% per hour. Switch on at 7am and by 5pm I was changing battery. Now I am switching around 3pm.
That's why I have 3 batteries!
I still think its better than nearly every other device I have owned but that nay be because battery is larger. I dont know why they don't design to put in 2400 mah batteries (my treo 650 had one!).
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
The treo 650 also had a thickness double that of the Atrix .

The batteries in your phone are high-capacity lithium-ion batteries. This kind of battery technology cannot be simply reset and “re-calibrated.” When you follow the steps to recalibrate your battery and delete the batterystats.bin file from your phone, you are getting rid of more than what you think… Stored inside that batterystats.bin file, your phone keeps detailed logs of the capacity of your battery and uses it on how it can be utilized more efficiently. By deleting this file, it basically wipes the phone’s memory on what the battery can really do. This actually does damage to your battery by using up valuable charging cycles, all while giving a fraction of battery life and performance.
Now, you might be saying uh-oh, I’ve already re-calibrated my battery! What do I do?!
Well here’s your answer. Use your phone like normal. Yes, your battery and phone wont perform as good as it can for a while, but after a few days, you will notice that it starts doing better and better. Give it time, its trying to rebuild all those logs that you just deleted.

edgeicator said:
The batteries in your phone are high-capacity lithium-ion batteries. This kind of battery technology cannot be simply reset and “re-calibrated.” When you follow the steps to recalibrate your battery and delete the batterystats.bin file from your phone, you are getting rid of more than what you think… Stored inside that batterystats.bin file, your phone keeps detailed logs of the capacity of your battery and uses it on how it can be utilized more efficiently. By deleting this file, it basically wipes the phone’s memory on what the battery can really do. This actually does damage to your battery by using up valuable charging cycles, all while giving a fraction of battery life and performance.
Now, you might be saying uh-oh, I’ve already re-calibrated my battery! What do I do?!
Well here’s your answer. Use your phone like normal. Yes, your battery and phone wont perform as good as it can for a while, but after a few days, you will notice that it starts doing better and better. Give it time, its trying to rebuild all those logs that you just deleted.
Click to expand...
Click to collapse
This is the first time I am reading this sort of opinion, though I have read countless info on the subject.
If you want to make such a strong point, you better have source to back up your opinion (article, studies, other source of proof, etc).

These threads are all USELESS without NUMBERS.
Like another person with common sense already stated in this thread, you need to provide numbers.
GB has this improved tool (over 2.2) where you can see how your battery is wasting its juice. Watch those numbers for a few charges and then POST THEM TO COMPARE.
Saying your battery sucks without giving any numbers is like calling a color ugly.
(just in case someone misses the points, without numbers it's hard to compare, since it mainly becomes an opinion at that point)
P.S.- Please don't post "My battery lasts for over 9000 hours." and think that's enough info. Use your head.

[GUIDE] How I got almost 3 days of battery life on my Nexus S 4G

First and foremost this guide is based around the Sprint Nexus S 4G. If you do not have the Nexus S 4G, Than this guide will probably not help you. =)
Secondly all credit goes to the wonderful people that work endlessly to make these wonderful Roms and Kernels. Without you guys Android wouldn't be what it is today!
Third: Please make a back up and use this guide at your own risk. I don't want to bare the weight of someone turning their phone into a paperweight by using this guide.
Alright, Now lets get to the fun part.
Case you've already forgotten why you're ready this topic. This is my rough how-to guide on getting easily over 2 days out of a single charge on your phone, Very much possible to push 3 or more days depending on use and other varying factors.
What you're going to need to start:
- Rooted Nexus S 4G with a custom recovery like Clockwork mod.
- Flash the following Rom http://forum.xda-developers.com/showthread.php?t=1417499
- Flash the following Kernel http://forum.xda-developers.com/showthread.php?t=1436313
-Flash the following "KL2" Radio update http://forum.xda-developers.com/showthread.php?t=1077168
After you have flashed all the above and confirmed your phone is running stable with all the default settings. Charge your phone to 100% and reboot back into recovery, and WIPE YOUR BATTERY STATS
Now. Lets begin configuring your rom and kernel!
- Install CPU MASTER FREE from the android market https://market.android.com/details?id=com.antutu.CpuMasterFree&hl=en
Set the following on CPU Master
- CPU Speed 800 MAX and 100MIN
- CPU Governor CONSERVATIVE
- and Scheduler set to CFQ
- Make sure to click apply on boot as well
- Now Install NSTOOLS from the Android market https://market.android.com/details?id=mobi.cyann.nstools&feature=search_result
Set the following on NSTOOLS
- DEEP IDLE: ENABLED
- Backlight Dimmer: ENABLED
- Make sure Backlight Notifications are left disabled. It keeps phone from idling properly.
- Leave all other settings alone and make sure to check set on boot
- Now lastly install Antutu Battery Saver from the Android Market
https://market.android.com/details?id=com.antutu.powersaver&feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5hbnR1dHUucG93ZXJzYXZlciJd
Activate Battery Saver and set to level 2 battery save. Easy as that.
Basically your done! =)
If you notice your phone has a slightly worse or little to no improvement on the battery this is due to you deleting your battery stats. As you use your phone it will write new stats and you will begin to notice a difference after a few cycles. Just make sure your battery is charged when you wipe them, Let the phone run almost completely dead. Plug it up, Let it charge back to 100%, Unplug it. Rinse and repeat. Just be sure to unplug it when you notice it's fully charged even if you don't plan on going anywhere. Just let it sit and run on battery so that it calibrates the battery stats while it's idle as well.
Now as you should already know your battery life is going to heavily depend on use and SIGNAL STRENGTH. It seems a lot of people don't realize the more signal you have the longer your battery will last. If you're in an area with very low signal it can kill your phone in a matter of hours.
I have attached a screen shot of my battery life using this above method. Other settings I will mention
- WIFI ENABLED and CONNECTED
- Bluetooth and NFC DISABLED
- Automatic backlight control enabled
- Facebook notifcations, Weather and Contacts are the only things set to SYNC on my phone.
- Usage: Light to moderate. This includes a few texts throughout the day. A few phone calls, and a brief checking of facebook every now and then.
If I'm missing anything I will update this post. That is all for now. Happy modding and may this tutorial work the same wonders for you as it did me.
Also I should state that the phone finally died at around 2Days 17hrs on battery. My goal for 3 straight days was cut short after a few 30 minute phone calls and other work I had to do on the phone.
If you have any questions. Feel free to post, or PM me. I'll be here =)

cwayn1989 said:
First and foremost this guide is based around the Sprint Nexus S 4G. If you do not have the Nexus S 4G, Than this guide will probably not help you. =)
Secondly all credit goes to the wonderful people that work endlessly to make these wonderful Roms and Kernels. Without you guys Android wouldn't be what it is today!
Third: Please make a back up and use this guide at your own risk. I don't want to bare the weight of someone turning their phone into a paperweight by using this guide.
Alright, Now lets get to the fun part.
Case you've already forgotten why you're ready this topic. This is my rough how-to guide on getting easily over 2 days out of a single charge on your phone, Very much possible to push 3 or more days depending on use and other varying factors.
What you're going to need to start:
- Rooted Nexus S 4G with a custom recovery like Clockwork mod.
- Flash the following Rom http://forum.xda-developers.com/showthread.php?t=1417499
- Flash the following Kernel http://forum.xda-developers.com/showthread.php?t=1436313
-Flash the following "KL2" Radio update http://forum.xda-developers.com/showthread.php?t=1077168
After you have flashed all the above and confirmed your phone is running stable with all the default settings. Charge your phone to 100% and reboot back into recovery, and WIPE YOUR BATTERY STATS
Now. Lets begin configuring your rom and kernel!
- Install CPU MASTER FREE from the android market https://market.android.com/details?id=com.antutu.CpuMasterFree&hl=en
Set the following on CPU Master
- CPU Speed 800 MAX and 100MIN
- CPU Governor CONSERVATIVE
- and Scheduler set to CFQ
- Make sure to click apply on boot as well
- Now Install NSTOOLS from the Android market https://market.android.com/details?id=mobi.cyann.nstools&feature=search_result
Set the following on NSTOOLS
- DEEP IDLE: ENABLED
- Backlight Dimmer: ENABLED
- Make sure Backlight Notifications are left disabled. It keeps phone from idling properly.
- Leave all other settings alone and make sure to check set on boot
- Now lastly install Antutu Battery Saver from the Android Market
https://market.android.com/details?...1bGwsMSwxLDEsImNvbS5hbnR1dHUucG93ZXJzYXZlciJd
Activate Battery Saver and set to level 2 battery save. Easy as that.
Basically your done! =)
If you notice your phone has a slightly worse or little to no improvement on the battery this is due to you deleting your battery stats. As you use your phone it will write new stats and you will begin to notice a difference after a few cycles. Just make sure your battery is charged when you wipe them, Let the phone run almost completely dead. Plug it up, Let it charge back to 100%, Unplug it. Rinse and repeat. Just be sure to unplug it when you notice it's fully charged even if you don't plan on going anywhere. Just let it sit and run on battery so that it calibrates the battery stats while it's idle as well.
Now as you should already know your battery life is going to heavily depend on use and SIGNAL STRENGTH. It seems a lot of people don't realize the more signal you have the longer your battery will last. If you're in an area with very low signal it can kill your phone in a matter of hours.
I have attached a screen shot of my battery life using this above method. Other settings I will mention
- WIFI ENABLED and CONNECTED
- Bluetooth and NFC DISABLED
- Automatic backlight control enabled
- Facebook notifcations, Weather and Contacts are the only things set to SYNC on my phone.
- Usage: Light to moderate. This includes a few texts throughout the day. A few phone calls, and a brief checking of facebook every now and then.
If I'm missing anything I will update this post. That is all for now. Happy modding and may this tutorial work the same wonders for you as it did me.
Also I should state that the phone finally died at around 2Days 17hrs on battery. My goal for 3 straight days was cut short after a few 30 minute phone calls and other work I had to do on the phone.
If you have any questions. Feel free to post, or PM me. I'll be here =)
Click to expand...
Click to collapse
I thought it was the More Bars you have the more Data Kills Your Battery... but sprints 3G sucks .. some users only experience a .5kbs to 1.0 Mbs (if your lucky) ... that being said I think that's why your battery lasts longer. But then again I'm on Wifi so my battery has lasted all day ^_^ 15% left. Nfc on , Bluetooth off , screen at 50% brightness and heavy usage. Buuuut in your screen shot below your on 3G ... the 2 days.. was it always on Wifi?
- Google

What is your screen on time?
I don't use any "power-saving" apps, just AOKP Milestone 2 with Steve Garon's 1.14 kernel to run 50hrs with nearly 4hrs of screen time.
100/1100mhz, interactive governor, standard voltage, bln/bld on, wifi used whenever available. It doesn't help that my office is in a poor signal area - battery life would be much better if the signal reception bar stayed green all the time.
Sent from my Nexus S 4G using xda premium

iGoogleNexus said:
I thought it was the More Bars you have the more Data Kills Your Battery... but sprints 3G sucks .. some users only experience a .5kbs to 1.0 Mbs (if your lucky) ... that being said I think that's why your battery lasts longer. But then again I'm on Wifi so my battery has lasted all day ^_^ 15% left. Nfc on , Bluetooth off , screen at 50% brightness and heavy usage. Buuuut in your screen shot below your on 3G ... the 2 days.. was it always on Wifi?
- Google
Click to expand...
Click to collapse
Screen time out is on 30 seconds. and Wifi was connected virutally through the entire time, exception was when I visited a friends house which is why in the screenshot it does not say it's connected, However it was still active.

Braneless said:
What is your screen on time?
I don't use any "power-saving" apps, just AOKP Milestone 2 with Steve Garon's 1.14 kernel to run 50hrs with nearly 4hrs of screen time.
100/1100mhz, interactive governor, standard voltage, bln/bld on, wifi used whenever available. It doesn't help that my office is in a poor signal area - battery life would be much better if the signal reception bar stayed green all the time.
View attachment 912363View attachment 912364View attachment 912365
Sent from my Nexus S 4G using xda premium
Click to expand...
Click to collapse
Those are very nice stats, Question, On your battery log, What are the massive drops in battery from? low signal or just heavy use on your phone?
Also I believe I'm going to go back an retry my experiment with SmartassV2 governor and On Demand. because I recently read they are better than conservative.
By all means play around with these settings and if you report back something I can approve on I will be happy to update this post and give credit to whoever finds more tricks to improving the battery life even more =)

cwayn1989 said:
Those are very nice stats, Question, On your battery log, What are the massive drops in battery from? low signal or just heavy use on your phone?
Also I believe I'm going to go back an retry my experiment with SmartassV2 governor and On Demand. because I recently read they are better than conservative.
By all means play around with these settings and if you report back something I can approve on I will be happy to update this post and give credit to whoever finds more tricks to improving the battery life even more =)
Click to expand...
Click to collapse
They're from heavy use, probably angry birds or web browsing. The poor signal usually results in much slower drain.
Sent from my Nexus S 4G using xda premium

Braneless said:
They're from heavy use, probably angry birds or web browsing. The poor signal usually results in much slower drain.
Sent from my Nexus S 4G using xda premium
Click to expand...
Click to collapse
Not saying you're wrong, but based on past experience when I lived in an area where my phone was constantly losing and gaining signal or especially switching between Verizon (Roaming) and Sprint to find a signal, My phone would get very warm and it would cause massive battery drain.

Also in regards to the Sprints 3G speed.
Here in town where I live now, with the new KL2 radio
Edit:
I have attached screenshots of 3G speeds. It seems today when I ran the test the speeds aren't that special, I guess it all depends on network load.

Braneless said:
What is your screen on time?
Click to expand...
Click to collapse
This ^
I can get about 4-5 hrs on screen-on time a day with a full charge before it dies. I couldn't imagine spreading that amount of time over three days unless I was travelling again or something lol
Sent from my Nexus S 4G using Tapatalk

kyouko said:
This ^
I can get about 4-5 hrs on screen-on time a day with a full charge before it dies. I couldn't imagine spreading that amount of time over three days unless I was travelling again or something lol
Sent from my Nexus S 4G using Tapatalk
Click to expand...
Click to collapse
Haha yeah sorry about that guys, That could have been helpful for me to post, but I actually just now realized you could view your screen on hours by clicking it. I feel about stupid now.
After I tweak some more settings and do this little experiment again I'll be sure to actually include that, Seeing as it would have been helpful LOL

Braneless said:
What is your screen on time?
I don't use any "power-saving" apps, just AOKP Milestone 2 with Steve Garon's 1.14 kernel to run 50hrs with nearly 4hrs of screen time.
100/1100mhz, interactive governor, standard voltage, bln/bld on, wifi used whenever available. It doesn't help that my office is in a poor signal area - battery life would be much better if the signal reception bar stayed green all the time.
View attachment 912363View attachment 912364View attachment 912365
Sent from my Nexus S 4G using xda premium
Click to expand...
Click to collapse
How do you get your phone to idle so well? I can never get the battery stats to flatline like that. Could it be due to me having BLN turned on as the OP said that causes an idle bug?

tycruickshank said:
How do you get your phone to idle so well? I can never get the battery stats to flatline like that. Could it be due to me having BLN turned on as the OP said that causes an idle bug?
Click to expand...
Click to collapse
There's a possibly you're running an app in the background that's preventing your phone from deep idling. Also try the battery saving app I mentioned in the post as well. It works wonders for some, and others don't notice difference. There's a lot of varying factors.
Have you wiped your battery stats and calibrated your battery with the method I mentioned above? Also you can check to see if your phone is deep idling by going into NSTools and clicking Idle stats.
If you see that your idle numbs are higher than your deep idle stats, Than yes, Something is preventing you're phone from doing so, and I would recommend disabling BLN and seeing if that fixes it.
It could be an issue with BLN and it may not be. My entire post is basically the steps and settings I've figured out and tweaked on my own to achieve maximum battery. I've read around and it seems some others have used BLN without any noticeable difference in battery at all. I guess it really just depends.
Also to the other post, The main reason I run my phone unclocked is basically, in use, I prefer the CPU to be at the lowest max speed possible, while remaining smooth, and I've noticed no lag at 800max, So therefor even when I'm using my phone it's still not going to be pulling as much power as if lets say I had it set to 1000 or 1100. Overclocking is great, Don't get me wrong, but unless you're doing something heavy like gaming or a sheet ton of crazy multitasking, I don't really think it's worth it. That's just my opinion though =)

So you're at home all this time? Then why go through all this trouble and handicapping of features and performance? Why not just plug it in?

jesusice said:
So you're at home all this time? Then why go through all this trouble and handicapping of features and performance? Why not just plug it in?
Click to expand...
Click to collapse
How exactly am I handicapping? I had people asking me how I was getting my battery life and wanted me to post up details on it, so I decided I would. I run an underclocked phone because like I stated in my previous post, I don't see the point in running a overclocked phone unless you're going for benchmarks or doing a lot of heavy multitasking and then by all means, Take the 5 seconds to change your max CPU speed. If you're referring to me not running BLN, That's because for some, including me it keeps your phone from idling and will cause battery drain. It works fine for some, others it doesn't. I'm SURE it's a problem on my end, but until I get it worked out I'm just leaving it off for now.
I've been learning about rooting and modding since the Sprint HTC Hero days. I'm far from a professional and will be the first to admit I'm an amateur compared to you guys, I cannot develop, I cannot code. I'm simply wrote this guide as a reference point for people wanting to get good battery life, That's why I said tweak with the settings and have fun.
The main reason I'm so ecstatic about the battery life, is up until now I've barely been able to get a days normal use out of an android phone even running custom roms and all that good stuff. Now I can actually use my phone throughout the day, Throw it on my dresser at night, and wake up the next morning with still enough charge to use it again without having to worry about plugging it up every night.

Home or not, this info can prove to be very useful depending on an individual's circumstance. I work multiple jobs and when I get home, sometimes I'm so tired I don't even bother to fiddle with my phone's charging cable and just crash on my bed. I've gotten great battery life using similar tactics (went to bed with a 13% charge once, woke up with the thing still alive and kicking), so again, some may find this extremely helpful. Good work!

zeigan said:
Home or not, this info can prove to be very useful depending on an individual's circumstance. I work multiple jobs and when I get home, sometimes I'm so tired I don't even bother to fiddle with my phone's charging cable and just crash on my bed. I've gotten great battery life using similar tactics (went to bed with a 13% charge once, woke up with the thing still alive and kicking), so again, some may find this extremely helpful. Good work!
Click to expand...
Click to collapse
Thank you kind sir. I'm glad you were able to find this poorly formatted guide useful! =D