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%.
Sent from my PC36100 using XDA App

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.

[BATTERY]--Improving CM7 Battery Life--[BATTERY]

So I have seen a couple users asking about creating a new thread for battery life on CM7 only, so here it is. I am getting ok battery life, but nothing near where it should be.
Here is where you can suggest, try, try again, and submit findings pertaining to the battery life. So let's get this started!!

jzero88 said:
So I have seen a couple users asking about creating a new thread for battery life on CM7 only, so here it is. I am getting ok battery life, but nothing near where it should be.
Here is where you can suggest, try, try again, and submit findings pertaining to the battery life. So let's get this started!!
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I've found that turning off the radio saves battery life so I def. think that the radio is the problem for it

Thanks for starting this. It should be interesting to see where this thread goes.....

You mean flight mode? I don't think that is a viable solution, well at least if you need to use the phone. I can't even get xda super power installed for some reason
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try some of the different cm7 modems that are around, i found that on the 2.2 roms the kb5 modem was very efficient... it helps a bit with cm nightly got about 16 hours moderate use.

byt3b0mb said:
try some of the different cm7 modems that are around, i found that on the 2.2 roms the kb5 modem was very efficient... it helps a bit with cm nightly got about 16 hours moderate use.
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Right now I am on the 5-15 initial, I couldn't find the newest nightly
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I turn data off when not in use and it definitely saves battery for me.

byt3b0mb said:
try some of the different cm7 modems that are around, i found that on the 2.2 roms the kb5 modem was very efficient... it helps a bit with cm nightly got about 16 hours moderate use.
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I get better battery life with KB5 too.
I can confirm that data use is probably part of the issue. I live in the sticks, there is no 3G at my house. My battery life is actually descent, no where near what I had with Froyo, but it doesn't seem to be anywhere near as bad as other people are claiming.

turn off background data when you don't need it, don't use auto brightness.
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Personally, I've just read from some ROM thread here, that you need to calibrate your battery if you flash custom ROMS. So far, it has worked out quite nicely.

Kenchi* said:
Personally, I've just read from some ROM thread here, that you need to calibrate your battery if you flash custom ROMS. So far, it has worked out quite nicely.
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How do you do that?
Sent from my Vibrant of course!

Trackstar996 said:
How do you do that?
Sent from my Vibrant of course!
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Charge to 100%, go into recovery and wipe battery stats.
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hitman818 said:
Charge to 100%, go into recovery and wipe battery stats.
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Yes, also doing that. I recommend to go to the Android Market and search for Battery Calibration by NeMa. It's a great, free application as well to make sure that your battery is calibrated on top of the instruction from the quote.

Using spare parts app change wifi sleep policy to never. Known bug in gingerbread. New wifi drivers were just released for stock builds but I don't know if theyll work on cm7 or if they will be implemented.
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Kenchi* said:
Yes, also doing that. I recommend to go to the Android Market and search for Battery Calibration by NeMa. It's a great, free application as well to make sure that your battery is calibrated on top of the instruction from the quote.
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Ya battery calibration app works quite well, that is something I haven't done yet with this ROM 0_o

I was having terrible, absolutely terrible battery life with CM7 and I decided to do some investigating. On my initial installation I used Titanium backup and Google Backup to restore settings and applications. I could not manage 4-6 hours on a single charge, with calibration.
I decided to do a fresh CM7 install to test things out. I simply booted into recovery and wiped data, cache, and system. I reinstalled the initial package provided on the CM forums and let CM7 boot. After letting the new installation settle down for 10 minutes, I rebooted into recovery, flashed gapps, and then the newest nightly. Again, I let it boot and sit for 10 minutes before performing anything. After settling down, I charged up to 100%, rebooted into recovery again, and wiped battery stats.
I should note that through this I declined google's offer to use backup services and declines google's offer to restore any old backups. I also decided to not restore any apps through titanium backup.
With my screen brightness set to 100%, wifi enabled, bluetooth enabled, and using the phone at amoderate to heavy amount, I have gone 12 hours and am at 5%. I am certain that after the battery stats can calibrate fully and run through a few more charges I will easily hit 15 hours on moderate to heavy usage.

explodingboy70 said:
Using spare parts app change wifi sleep policy to never. Known bug in gingerbread. New wifi drivers were just released for stock builds but I don't know if theyll work on cm7 or if they will be implemented.
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I think they are, atinm said he updated it, but it makes the wifi disconnect from time to time like the earlier cm7 builds.
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jzero88 said:
Right now I am on the 5-15 initial, I couldn't find the newest nightly
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if you have rom manager pro the nightlies are available for download.

here's a few tips for you guys:
1. turn off 3G, stick to GSM only. Found in settings > wifi and network > mobile network> gsm only
2. use some black themes, anything than the normal grey and stuff should help
3. If you have data, use that instead of wifi, from what I see wifi eats more battery
4. if you're using wifi, go into wifi settings > *menu button* > advanced wifi settings > wifi sleep policy to: when screen turns off or never when plugged in.
hope that helps

This thread has been very helpful. Thanks

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.

Nexus S kills the batteries

Hello
My friend have a Nexus S (9020A) the problem is when the battery dies it's impossible to charge the phone, it won't turn on! I have tried with a lot of batteries now and it kills all of them! it works like normal when you don't let the battery die completely but it should not do this anyway, what is wrong?

I think I know what your talking about.
The phone consumes more power than it receives when its using data. Do if your at 5% and charging, but also using the internet. You will last for mere minutes.
Best thing to do is to simply let it charge and not touch it when its doing so. You can still hotspot,text talk. But streaming music, data apps (like tapatalk or skype) and web browser WILL KILL YOUR BATTERY WHILE YOU CHARGE.
But if your saying it won't charge. Sorry. No idea
Sent from my Nexus S 4G using XDA App. Developer of brickROM, and OP of XDA Thread of The Year 2011.

Shark_On_Land said:
I think I know what your talking about.
The phone consumes more power than it receives when its using data. Do if your at 5% and charging, but also using the internet. You will last for mere minutes.
Best thing to do is to simply let it charge and not touch it when its doing so. You can still hotspot,text talk. But streaming music, data apps (like tapatalk or skype) and web browser WILL KILL YOUR BATTERY WHILE YOU CHARGE.
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What? That's just nonsense.

If you turn the phone off and then try to charge it with the battery in, you're not able to charge it?

gsvnet said:
If you turn the phone off and then try to charge it with the battery in, you're not able to charge it?
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no, the phone kills the batteries, I would have test the batteries on other phone if I had, but atm I just have the Nexus S, it won't let me charge the batteries when they are dead.. if there is 1% left I can charge but when it dies it's dead forever... there must be something wrong with the phone, right?

Try wiping battery stats?

Harbb said:
Try wiping battery stats?
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don't work.. when battery have some % left the phone works like normal... but if I let it die, then it's dead.. I can't even turn on the phone, it's like there is no battery inserted.

The phone should shut down automatically when the voltage reaches a certain threshold. Is the phone not doing this? These batteries are not meant to drop below a certain voltage and doing so could damage them.
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Wait, does this mean I have to turn my wifi and data off whenever I'm charging my phone? Bulls right there...
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Rem3Dy said:
The phone should shut down automatically when the voltage reaches a certain threshold. Is the phone not doing this? These batteries are not meant to drop below a certain voltage and doing so could damage them.
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This ^^
Are you running a modded rom/kernel/calibration tool that let your battery go below the min voltage threshold?

evcz said:
This ^^
Are you running a modded rom/kernel/calibration tool that let your battery go below the min voltage threshold?
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The phone have doing the same with all type of ROMS, CM7, Stock Google Gingerbread and now ICS.
Sent from my Galaxy S2 CM9 using Tapatalk

kyokeun1234 said:
Wait, does this mean I have to turn my wifi and data off whenever I'm charging my phone? Bulls right there...
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No, just go ahead and ignore anything Shark_On_Land posts - he's a slightly slow middle-schooler who claims to be a "developer".
Snt frm my Nxs S 4G sng xd prm

[email protected] said:
The phone have doing the same with all type of ROMS, CM7, StockvGoogle Gingerbread and now ICS.
Sent from my Galaxy S2 CM9 using Tapatalk
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so does it auto shutdown or not?
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Rem3Dy said:
so does it auto shutdown or not?
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yes I mean when battery dies all phones shutdown or have I missed something? problem is I can't charge the battery when that happens.

Shark_On_Land said:
I think I know what your talking about.
The phone consumes more power than it receives when its using data. Do if your at 5% and charging, but also using the internet. You will last for mere minutes.
Best thing to do is to simply let it charge and not touch it when its doing so. You can still hotspot,text talk. But streaming music, data apps (like tapatalk or skype) and web browser WILL KILL YOUR BATTERY WHILE YOU CHARGE.
But if your saying it won't charge. Sorry. No idea
Sent from my Nexus S 4G using XDA App. Developer of brickROM, and OP of XDA Thread of The Year 2011.
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This is so insanely inaccurate. Using the hotspot is one of the most battery intensive operations the phone can carry out. Streaming music, Skype, and browsing don't even hold a candle to it. The only thing that comes close would be navigation (and that can be even worse sometimes), followed by talking on the phone by a pretty decent, but not massive margin. It also depends on the charger. Where do you get your information?
Sent from my PG41200 using Tapatalk

if the phone is doing the same with all type of ROMS, then it may be hardware related issue.
I have been running various Roms since the start but never faced this issue. A lot of times battery has drained fully. With some of the new roms that are there my phone lasts more than a day with Data on Roaming full time.

I know most phone batteries will not be chargeable if you deplete them completely. Usually this happens by throwin it in the drawer and not using it for a long time but ive never heard of it happening just by using the phone. Id say its definitely a hardware issue

Bradart said:
This is so insanely inaccurate. Using the hotspot is one of the most battery intensive operations the phone can carry out. Streaming music, Skype, and browsing don't even hold a candle to it. The only thing that comes close would be navigation (and that can be even worse sometimes), followed by talking on the phone by a pretty decent, but not massive margin. It also depends on the charger. Where do you get your information?
Sent from my PG41200 using Tapatalk
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Trial & error
Sent from my Nexus S 4G using XDA App. Developer of brickROM, and OP of XDA Thread of The Year 2011.

Shark_On_Land said:
Trial & error
Sent from my Nexus S 4G using XDA App. Developer of brickROM, and OP of XDA Thread of The Year 2011.
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A lot of error in your case...

Battery issues

Hi guys. Need some help. Very happy with my nexus 4 but, and its a big but, i am having some serious issues with the battery. I am struggling to even get 2 hrs of screen time on my nexus 4. The battery cant be this bad. Is there any way i can see what is exactly causing my battery drain? Sync, nfc is turned off. No widgets r running. Cant understand it. May have to rma this thing.
Help please.
Sent from my Nexus 7 using xda app-developers app

This is probably the cause of your problem.
http://forum.xda-developers.com/showthread.php?t=1999368
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didi you root the phone? if so what rom/kernel are you using?
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KyraOfFire said:
didi you root the phone? if so what rom/kernel are you using?
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Stock. Not done anything to it
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What kind of apps do you have?? Like apps that you think might drain some battery. Also use betterbatterystat app to monitor what's waking your device.
Sent from my Transformer Pad TF300T using xda app-developers app

moghm said:
Stock. Not done anything to it
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With stock, around 2 hours of screen on time is typical. You can prolong the battery life by disable Google Now, location service, email sync, Playstore auto update, etc. Check your battery stats (try better battery stats from the store) to see if any third-party apps drain your battery.
The better way to do it is to unlock bootloader, root your phone then flash a custom kernel. I recommend franco.Kernel. 3-4 hours of screen on time is typical with franco.

KyraOfFire said:
With stock, around 2 hours of screen on time is typical. You can prolong the battery life by disable Google Now, location service, email sync, Playstore auto update, etc. Check your battery stats (try better battery stats from the store) to see if any third-party apps drain your battery.
The better way to do it is to unlock bootloader, root your phone then flash a custom kernel. I recommend franco.Kernel. 3-4 hours of screen on time is typical with franco.
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Might as well flash a custom ROM with it if you're going to use a custom kernel IMO. When a new OTA, OP will have problems updating to it because he is using stock + custom kernel + custom recovery.

Here is how to fix your battery problem.
1. Turn off location access in Google Maps settings.
2. Wait about a week for the battery to go through its charge cycle 6-10 times. Let it get as low as possible without the battery dying (this is really bad) and be sure to let the battery sit at 100% for atleast a half hour or so when fully charged.
Each day you will see your battery life increase and when done, you should be getting around 5 hours screen on time.

Well dramatic change in battery life as displayed below. Now after having a read in several topics it seems like a fix is to have the wifi on. How strange as this goes against the ethos of all previous smartphones i have owned i.e. wifi on drains battery. I have uninstalled a few apps and also switched of location access, so to be sure that the fix is wifi related i will switch wifi off the next time i do a full charge and see how that behaves. By the way android os is way down in battery consumption now.
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