Database Users

Battery life

Is there anyway to make evo battery last longer
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Theres toms of threads on this, just use search
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The usual popular ways involve custom kernals, specific charging routines.
As started above, the most effective way to find out is search the forums because there are literally thousands of post about that already existing
Swyped from a galaxy far far away......

I can get my battery to stay at 100% for 4 hours is I have data turned off. That's 3g or 4g and WiFi. I turn it on when I go to check when I have the time then turn it off again. That's why the power notifications is a must have mod.
DirtyShadyWon said:
Is there anyway to make evo battery last longer
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From a Super Baked Evo #0002

Root your phone and install a custom rom, that helps tremendously. Then I recommend you flash a custom kernel from here.

DirtyShadyWon said:
Is there anyway to make evo battery last longer
I always find that if you take the battery out, it will last longer...
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Use Wifi instead of 3g whenever possible. It makes a difference. Turn off 3g when you are at work this way you will still receive texts and calls. It really lasts. I'm on 19 hours with 37%.
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I surf a lot on my phone...I mean a lot. I don't even use my PC anymore, and I probably surf the net for at least three to four hours a day (maybe more). Unfortunately, hours of surfing, even on WiFi, kills my battery. However, I have found that by turning brightness all the way down I can almost double my browsing time. It is a significant difference. You just have to learn to tolerate the dim screen, but for me it is very worth the trouble. And by the way, I have tried every trick I could find on this forum...moat made only marginal, if any, improvements. I use warm 2.2 with HTC 17 kernel.
Not much of a hack or trick...I know. But it is honestly worth it, at least for me.

Cyanogenmod 7

Has anyone else noticed a significance in battery life?
I have an average of 56-60 hours my max idle was 81hrs....
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I've gotten slight improvements, but what you're getting is insane... how'd you manage that?

I could never let my phone idle long enough to find out how many hours it would last. But I easily get a full day on cm7 with my regular use.

Only had it a day. But from where i've noticed holding the wildfire/aria next to each-other doing the same tasks with wifi on [ones got service, other doesnt yet] the wildfire was out to 80% in less than half an hour streaming music from pandora. Aria was at 95% with CM7 [even overclocked]. Although the wildfire is approx 3 months older, that seems amazing in my opinion.

Ultimate juice our even juice defender with power control plus..both have free and almost the exact same it's insane.
Anything to toggle data is recommend for battery life, but that's a given....
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Just my 2 cents, A profiling tool for over/under clocking. Over for when your hard at work, playing videogames and whatnot. And underclock for when the device is serving 0% use. That seems something that should be implemented into android.

TKTAB911 said:
Just my 2 cents, A profiling tool for over/under clocking. Over for when your hard at work, playing videogames and whatnot. And underclock for when the device is serving 0% use. That seems something that should be implemented into android.
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I agree thats what I did as well, cm7 seem to make swype better too, idk why... The only straw back is my juice defender doesn't data toggle on screen off/on...i miss that lol att rapes in data lol....
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most custom roms, especially aosp ones, give you a much better battery life because they put the control into your hands; you can customize your phone to be used how you see fit.

ValkyrieLiberty said:
I agree thats what I did as well, cm7 seem to make swype better too, idk why... The only straw back is my juice defender doesn't data toggle on screen off/on...i miss that lol att rapes in data lol....
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Cm7 makes everything better
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My battery life is improved with cm7 over cm6 with most things being equal. A welcome change I might add.
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I think battery is much better on 3G data but much worse via Wifi. I manually change to use them mutual exclusively.
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Display always 75% or higher

I don't know what happened but I'm having issues. I cannot get the display to fall below 75% and it sucks because between my EVO stock battery and my extended battery you can actually see the battery life being sucked away rapidly.
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I am having the same issue with my display can't figure out. What
Rom are you using I am using swag Rom

Iturned of the auomatic brightness on my phone and set it manually since installing cm7
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jerrykur said:
Iturned of the auomatic brightness on my phone and set it manually since installing cm7
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This manual setting will lower it a ton don't need it at full brightness half the time.
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I have the same issue, it is isolated to Sense roms. It doesn't happen with AOSP, which is why those are the only roms I can use due to the battery life. We had a thread going for a while with some other people who had the same problem, but nobody could really get to the bottom of it. I reached out to Aamikam but he couldn't really help or didn't want to. I didn't know if a logcat or anything would have helped but no one really answered me. It happens on froyo and gingerbread sense roms, and I never had the issue for a long time but then I noticed it the first time on MikFroyo 4.62. I've tried everything since then but no results.
Only thing to do right now is switch to an AOSP rom, I highly recommend Team Nocturnal's Xplod. Very smooth with Tiamat 3.3.7 kernel and more eye candy than CM7. I would love to be able to use MikG again but my battery literally dies in 4 hours, regardless if I'm using the phone or not.

Alot of ppl seem to think that 75 percent or more of display is bad. Really it isn't. The battery stats need to equal 100 percent. On sense roms that's the way it is and there is nothing wrong with it. Now if your experiencing high.android system usage, that's a problem. As long as everything else is relatively low, its all good
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Its after I installed the new update. Even downgraded to earlier gingerbread and still 75 plus.
Yes my system is low but I can watch my battery meter lower in realtime. Well I guess its time for a new toy.
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Prene said:
Its after I installed the new update. Even downgraded to earlier gingerbread and still 75 plus.
Yes my system is low but I can watch my battery meter lower in realtime. Well I guess its time for a new toy.
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If your actively using your phone and it drains rapidly that's pretty normal in my experience. But if its draining a lot during idle, check for a rogue running app. Otherwise not using auto brightness is a good mentioned trick along with underclocking with a new kernel should help
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It has to do with the use of a generic power_profile.xml. Neither CM or stock use correct values for this.

ndstrctbl said:
Alot of ppl seem to think that 75 percent or more of display is bad. Really it isn't. The battery stats need to equal 100 percent. On sense roms that's the way it is and there is nothing wrong with it. Now if your experiencing high.android system usage, that's a problem. As long as everything else is relatively low, its all good
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You don't get it...this is not normal display usage. I remember what my battery usage and battery life was like before this problem came up and there was a huge difference. Before, cell standby was my highest usage and I could get 25-30 hours on a charge. Then display usage shot up to 90% give or take some, and battery life dropped to 4-8 hours. I can understand if display was slightly higher than everything else, but display is at 75-95% while everything else is under 5 or 10. There is absolutely no reason why the display usage should be that high even when the screen has been OFF the entire time. That's not normal. I have multiple screen shots to back it up.
sbradymobile said:
It has to do with the use of a generic power_profile.xml. Neither CM or stock use correct values for this.
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Is there a way to fix or change this? And is there a reason why it happens to some people but not others?
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Well if its been off then I don't have the slightest clue.
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So using bootmanager (finally works now) I loaded miui. And my display is no higher than 1%. So something is very very wrong with sense and 4.5 updates.
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Battery Drains QUICKLY!

I got school at around 6 am. By the time I eat lunch it's already at 57%. By the time I get home around 5 and it's already at 17%.
All I do is listen to music (doubletwist/playerpro) and play Cut the Rope, WTF!?
Cell standy by is 46% in batter usage followed by wifi with 11%
any help guys?

What I tend to do is have brightness down to about half. Have you also tried fully charging the phone, taking the battery out and charging back to full? I sometimes find it drops down but regenerates itself.
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is it stock no over clocking mods etc no app keeping phone locked awake?
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Droid117 said:
What I tend to do is have brightness down to about half. Have you also tried fully charging the phone, taking the battery out and charging back to full? I sometimes find it drops down but regenerates itself.
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fma965 said:
is it stock no over clocking mods etc no app keeping phone locked awake?
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Brightness is below half,I never go over. WiFi is on but not all the time.
Stock rom 2.3.4 rooted

Do you have data off?

How's your phone signal most of the time? It has been proven that low/bad signal drains battery quicker than good signal.
Sometimes certain buildings/rooms have pretty bad reception making it a huge drain for your phone.

Droid117 said:
What I tend to do is have brightness down to about half. Have you also tried fully charging the phone, taking the battery out and charging back to full? I sometimes find it drops down but regenerates itself.
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This is a useful piece of information, however is not really practical. Ideally we don't want to be turning off our phones on every charge :/
I myself own 3 batteries, and alternate them (I have a wall charger for the batteries)

what ver are you using if 2.3.4 the battery issue is fix.

I get 3 /4 bars, at school right new and yea some times I get nothing, especial ly during the subway ruse which is an hour
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Once I updated my phone to 2.3.3 I noticed that the battery life was sub-par, only lasting 3/5s of the day on a full charge.
I proceeded to root my phone (as I don't have the money to unlock my Big Red Bootloader); after installing SetCPU I took down the clocking meter 1 notch (768MHz) and the phone is stable with not difference in performance (so far). Doing this and removing some unneeded bloatware has increased my battery life 2.5x and I can go almost 3 days on a single charge.
xiEvo said:
what ver are you using if 2.3.4 the battery issue is fix.
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xiEvo is correct and I've read a lot of good stuff regarding battery life with 2.3.4. I can only begin to imagine what kind of battery life I'll have once I get that update.

get juice defender off the market ultimate version is best. this will lookafter everything for you.. juice defender is a must have app for all android devices
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I'm 2.3.4.
Honestly I had the best battery life with 2.3.2, IDK why.

Someone help me! (BatLife woes)

Alright I wasn't going to make a thread on this because this topic is already discussed elsewhere naturally but I feel my situation is different. All over the place I see people reporting great battery life with ICS.. well mine is HORRIBLE. I just flashed the latest nightly for Pete's bugless. I didn't change the kernel. Everything is stock. Only a few apps installed. Noop for scheduler and ondemand for governer.
The phones been off the charger for 55 minutes and I'm sitting at 76%. Idk what's going on. I've tried so many rom/kernel combos and I seem to get the same exact battery life no matter what. Around 6-9 hours with less than 1 hour of screen on time.
Things I've tried to combat this:
Undervolting
Freezing apps
Restricting background data
Underclocking
Brightness set to auto
And I'm sure a few other things I'm forgetting about. I've done all this and still get ****ty battery life. I've flashed the new radio hoping that it would solve my issues but no dice. My signal strength reports at -67 dbm yet the bars never go over 2. 3g or 4g. Even after updating plr.
On gingerbread cm7 I ran brightness at 70%, ocd to 1.4ghz and always got 15+ hours.
For the love of god someone help me. Cuz I think my phone hates the cream sammiches.
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try this kernel, trinity teuv underclocked/undervolted kernel, oc'd gpu http://goo.gl/rY6ga
and do not set brightness to auto, its a battery killer. i keep my brightness at about 20-25%.
also, be sure to fully discharge your battery then charge it completely, after 2 or 3 cycles you should be good.

simms22 said:
try this kernel, trinity teuv underclocked/undervolted kernel, oc'd gpu http://goo.gl/rY6ga
and do not set brightness to auto, its a battery killer. i keep my brightness at about 20-25%.
also, be sure to fully discharge your battery then charge it completely, after 2 or 3 cycles you should be good.
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I do this every day lol I let the battery drain to around 15-30% before I plug it back in.
Screenie: 1 hour later and I lost another 25% this can't be rom or kernel related. As I have tried trinity already and the same thing happens
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Ugh. Another 20% gone. Its only been a half hour from the above screenie. You guys see my dilemma? Lol **** me.
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21% ..
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i was having horrible battery drain after flashing a new rom & kernel - i finally figured it out that my APN settings were messed up and I re-entered them according to the correct carrier settings.
i don't know if that will apply to you since it looks like your 4G data is working properly, but since I was on wifi 99% of the time, as soon as I went off, my data didn't work. but it's something to look at.

4 hours later I'm down to 4% from a full charge.
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Could you try better battery stats to see if something is holding a wakelock?

Turn Data usage off :/ i think Fb or some app is using your 4g

irizwan said:
Turn Data usage off :/ i think Fb or some app is using your 4g
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I would be interested to see what your battle life diff is without 4g switched on. Also in that 4 hrs what was ur screen on time?
Have you thought of trying a new batt? Just got an OEM Samsung for 5 bucks on eBay. Worth a shot.
Oh remove fb app it blows...install friend caster way better less batt make sure you change the sync interval.
You could also try green power from the market to manage your data use while screen is off.
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Ok here's how my battery performs back in cm7 nightly 174 gingerbread. Almost 4 hours and only 25% chipped away. If you look above you'll notice I lost more than 40% in the same time with ics. And I'm doing nothing different. I'm even overclocked to 1.3ghz ondemand with noop for a scheduler.
I think I'm sticking to gbread until official source is out. Maybe then ill get the same battery life.
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That is really weird, if you have time try Milestone 3 and SG's latest kernel and just leave the settings stock . I get wonderful battery life with it hopefully you do to
Oh and are there any apps you are using on ICS that you aren't on CM7?
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Nope. Lately its only been a handful. I actually have more apps installed on gbread to achieve some of the features that are baked into ics. I just don't get it. Ics hates my phone. I even used the GPS today. So weird.
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Try what I suggested unless you did already then ignore lol
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Could it be a faulty battery?

Harbb said:
Could you try better battery stats to see if something is holding a wakelock?
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This. If you are installing the same ol battery-draining POS app then you are not going to fix it with any rom or kernel.

So you guys think my batter watcher widget is preventing my phone from sleeping properly? Ok.. I'm on cm7 right now. Battery is def back to normal. And this is with bacround data on. Ill delete bw and get better battery stats.
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Better battery stats is not the same thing as other (mostly useless) monitoring apps.

Look. 16 hours on gb. If none of my apps are killing the battery then what could it be?
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