Develop Bugs

EVO lasted whole workday - now how do I get it to last ALL DAY?

ok, I'm in a great mood, I FINALLY got my EVO to last from when I leave home to when I get back home with normal usage (no point in only sending texts and short phone calls - if that's all I'm gonna do I coulda got a razr!) but here it is including settings and all with usage details included.
ROM: Damaged Goods 3.5
Running: Advance Task Killer, Battery Indicator, Voice Dialer, Call Filter, Handcent SMS, and google voice just WOULD NOT stay closed!!!
Settings: Auto-sync off, automatic brightness, haptic feedback is off, background data is off
Other: I charged with an external charger that I got off of ebay, so the battery had a good charge to it
Usage Details:
1:59 pm turned on wifi and unplugged the phone
1:18-1:19 short phone call, dropped to 98%
1:47-2:11pm web browsing. Battery dropped to 91%
2:25-2:26 quick facebook check, battery dropped to 90%
2:43pm - checked e-mail, battery dropped to 88%
2:54-2:56 - 2 min. phone call. no change in battery
3:04-3:33 - turned off wi-fi, played some pandora + web browsing. battery dropped to 77%
3:40-3:41pm - phone call. no change in battery
4:15 - battery at 75%
4:16pm - internet (checked e-mail and facebook status)
4:58pm - battery at 69%
5:00pm-5:03 - phone call. battery at 68%
5:04pm-5:09 started playing music and doing the transformers movie puzzle
5:09-5:11pm - phone call.
5:11pm-6:10pm - continued music and transformers puzzle, let a couple people that stopped me asking about the phone play with this and that feature, did a 4g speed test (over 7mbps btw) and other things.
6:10pm - 49%
6:11pm - 11:08pm - phone placed in airplane mode while I'm working
11:08-11:42pm - picked up phone at 39% battery, then continued playing music and transformers puzzle
11:42-12:27 - phone call. dropped battery down to 10%
1:02am - battery down to 8%
now - 1:25am, battery still on 8%
Froyo has definitely improved my battery life, I used to couldn't get this type of battery life out of my EVO. Oh and here's the screen shot at the end of it all to prove the phone was actually USED, and not just sitting around.
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to those that dont' know, when you see screen shots with a high percentage of phone idle and cell standby it means the person isn't really using the phone, just letting it sit, or only sending a text or something like that. Think about it - how much use is someone getting out of a phone if 20+% of the battery was used on IDLING/STANDING BY?
I think I'll try it again tomorrow since I have a longer shift, and thursday since I'm off and see if there's any difference.
The point of this post?
I wanna get even more tips to see if I can get more life out of this battery.
where are the people talking about they get 2 days' battery life out of it?
give me some tips to get to that level!!!

You could use setcpu to underclock the phone. Also maybe you should stop using advanced task killer as many people have mentioned on the board it isn't off any use in froyo it may actually harm battery life. I think the battery indicator may also be a potential battery drainer. You should just install the battery percentage mod.
Sent from my PC36100 using XDA App

Use cm nightlies with juice defender n setcpu I end the day around 50 with heavy usage to say the least
Sent from my PC36100 using XDA App

I just saw u had basically everything turned off....I had **** battery on DC roms too...even if I did all that....I run my phone how it's suppose to b ran....everything on and thats what I get...
Sent from my PC36100 using XDA App

Get the 3500mah Seidio Battery. You will never have to worry about your battery again.

here you go two websites that have my phone lasting from 7am - 11pm with use
1 - http://www.goodandevo.net/2010/05/20-tips-to-improve-htc-evo-4g-battery-life.html
2 - http://www.techhackz.com/2010/06/how-to-increase-your-htc-evo-4g-battery.html
the overclock widget and the settings is highly important I can take my phone off charger and 20-30 minutes later after a few txt messages I still show at 100%. I do turn off my 3g but I do run wifi... Try it out

Some of these people might not agree with, but I’m now pulling over 20 hours (possibly even more, I recharge when I get to around 30% battery) with heavier usage than you, exchange set to “as items arrive”, beautiful widgets set to sync weather every 2 hours, data always on, and no airplane mode at all.
1 – lose the task killer. Let things sit in the background. If the background items aren’t set up to sync, then the amount of cpu and battery they’re using are negligible. You actually might be wasting more battery and cpu trying to keep them killed.
2 – uninstall all stock apps like news, stocks, peep, talk, etc
3 – try the BakedSnack ROM, or at least his Baked1 kernel on your current ROM – his built in underclocking helped me out enormously.
4 – if you’ve flashed a bunch of ROMs lately, you might want to go through the Cyanogen’s battery recalibration process
You might also want to try setting up some SetCPU profiles, I don't think it's needed with BakedSnack, but it works wonders on other roms.
Also, your note about "how much use is someone getting out of a phone if 20+% of the battery was used on IDLING/STANDING BY?" is a bit off - I think your percentages are so low there due to your 5 hours of airplane mode. Can you post your uptime and awake time? That will give you a much clearer picture of usage.
And this part is a personal pet peeve of mine - if almost half of your 12 hours uptime is in airplane mode, that's not something to be proud of. it might be better than what you had before, but people are getting 10+ hours without airplane mode - if you have to cripple your phone to get good battery, that shouldn't count.

I think basically getting your phone to be underclocked when its idle will be the biggest help. The Overclock widget lets you set your processor speed. I am also running stock rooted 2.2 with all the garbage apps removed. I ran mine both ways with wifi and 3g on all day and wifi and 3g on demand. I have gotten very good battery life since adding OC. I agree that you should use your phone as normal and make your decision from there... but underclocking seems to be the way to go

fachadick said:
1 – lose the task killer. Let things sit in the background. If the background items aren’t set up to sync, then the amount of cpu and battery they’re using are negligible. You actually might be wasting more battery and cpu trying to keep them killed.
Click to expand...
Click to collapse
I tried that today, I'll post results at the end of this post
2 – uninstall all stock apps like news, stocks, peep, talk, etc
Click to expand...
Click to collapse
how?
I'm still an android noob
3 – try the BakedSnack ROM, or at least his Baked1 kernel on your current ROM – his built in underclocking helped me out enormously.
Click to expand...
Click to collapse
will try that out soon.
4 – if you’ve flashed a bunch of ROMs lately, you might want to go through the Cyanogen’s battery recalibration process
Click to expand...
Click to collapse
done that
You might also want to try setting up some SetCPU profiles, I don't think it's needed with BakedSnack, but it works wonders on other roms.
Click to expand...
Click to collapse
would that function differently from overclock widget?
Also, your note about "how much use is someone getting out of a phone if 20+% of the battery was used on IDLING/STANDING BY?" is a bit off -
Click to expand...
Click to collapse
but idle and standby is doing NOTHING - that's what my phone was doing when I had it on airplane mode, but yet and still such a SMALL amount of percentage was being used.
I think your percentages are so low there due to your 5 hours of airplane mode. Can you post your uptime and awake time? That will give you a much clearer picture of usage.
Click to expand...
Click to collapse
I HAD TO put the phone on airplane mode for the simple fact that my job has a very low signal (I think Kroger INTENTIONALLY blocks cell phone reception because I get a full signal outside, almost no signal inside, and it's like that at EVERY kroger I ever go to!) and if I don't put it in airplane mode, my battery would have drained extremely fast.
I don't have the up time and awake time because I didn't think to do a screen shot of it.
And this part is a personal pet peeve of mine - if almost half of your 12 hours uptime is in airplane mode, that's not something to be proud of. it might be better than what you had before, but people are getting 10+ hours without airplane mode - if you have to cripple your phone to get good battery, that shouldn't count.
Click to expand...
Click to collapse
the alternative is keep it off of airplane mode and have my battery die off in 2-2.5 hours. Yeah, I think I made the right choice in that instant lol, usually I don't use airplane mode except when I'm sleep

RTC88 said:
You could use setcpu to underclock the phone. Also maybe you should stop using advanced task killer as many people have mentioned on the board it isn't off any use in froyo it may actually harm battery life. I think the battery indicator may also be a potential battery drainer. You should just install the battery percentage mod.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
where do Iget the battery percentage mod?
and what's the difference between setCPU and overclock widget's underclocking?

fachadick said:
Some of these people might not agree with, but I’m now pulling over 20 hours (possibly even more, I recharge when I get to around 30% battery) with heavier usage than you, exchange set to “as items arrive”, beautiful widgets set to sync weather every 2 hours, data always on, and no airplane mode at all.
1 – lose the task killer. Let things sit in the background. If the background items aren’t set up to sync, then the amount of cpu and battery they’re using are negligible. You actually might be wasting more battery and cpu trying to keep them killed.
2 – uninstall all stock apps like news, stocks, peep, talk, etc
3 – try the BakedSnack ROM, or at least his Baked1 kernel on your current ROM – his built in underclocking helped me out enormously.
4 – if you’ve flashed a bunch of ROMs lately, you might want to go through the Cyanogen’s battery recalibration process
You might also want to try setting up some SetCPU profiles, I don't think it's needed with BakedSnack, but it works wonders on other roms.
Also, your note about "how much use is someone getting out of a phone if 20+% of the battery was used on IDLING/STANDING BY?" is a bit off - I think your percentages are so low there due to your 5 hours of airplane mode. Can you post your uptime and awake time? That will give you a much clearer picture of usage.
And this part is a personal pet peeve of mine - if almost half of your 12 hours uptime is in airplane mode, that's not something to be proud of. it might be better than what you had before, but people are getting 10+ hours without airplane mode - if you have to cripple your phone to get good battery, that shouldn't count.
Click to expand...
Click to collapse
Would this calibration method be found on the CM Wikipedia?
Sent from my HTC EVO using XDA App

Systemfraud said:
Would this calibration method be found on the CM Wikipedia?
Sent from my HTC EVO using XDA App
Click to expand...
Click to collapse
All it is ...is do a full charge to 100% go into clockwork recovery advanced reset battery settings then restart phone n run till dead
Sent from my PC36100 using XDA App

the_hustleman said:
where do Iget the battery percentage mod?
and what's the difference between setCPU and overclock widget's underclocking?
Click to expand...
Click to collapse
No difference...except setcpu u can run profiles...setcpu is free on xda find the forum
Sent from my PC36100 using XDA App

the_hustleman said:
ok, I'm in a great mood, I FINALLY got my EVO to last from when I leave home to when I get back home with normal usage (no point in only sending texts and short phone calls - if that's all I'm gonna do I coulda got a razr!) but here it is including settings and all with usage details included.
ROM: Damaged Goods 3.5
Running: Advance Task Killer, Battery Indicator, Voice Dialer, Call Filter, Handcent SMS, and google voice just WOULD NOT stay closed!!!
Settings: Auto-sync off, automatic brightness, haptic feedback is off, background data is off
Other: I charged with an external charger that I got off of ebay, so the battery had a good charge to it
Usage Details:
1:59 pm turned on wifi and unplugged the phone
1:18-1:19 short phone call, dropped to 98%
1:47-2:11pm web browsing. Battery dropped to 91%
2:25-2:26 quick facebook check, battery dropped to 90%
2:43pm - checked e-mail, battery dropped to 88%
2:54-2:56 - 2 min. phone call. no change in battery
3:04-3:33 - turned off wi-fi, played some pandora + web browsing. battery dropped to 77%
3:40-3:41pm - phone call. no change in battery
4:15 - battery at 75%
4:16pm - internet (checked e-mail and facebook status)
4:58pm - battery at 69%
5:00pm-5:03 - phone call. battery at 68%
5:04pm-5:09 started playing music and doing the transformers movie puzzle
5:09-5:11pm - phone call.
5:11pm-6:10pm - continued music and transformers puzzle, let a couple people that stopped me asking about the phone play with this and that feature, did a 4g speed test (over 7mbps btw) and other things.
6:10pm - 49%
6:11pm - 11:08pm - phone placed in airplane mode while I'm working
11:08-11:42pm - picked up phone at 39% battery, then continued playing music and transformers puzzle
11:42-12:27 - phone call. dropped battery down to 10%
1:02am - battery down to 8%
now - 1:25am, battery still on 8%
Froyo has definitely improved my battery life, I used to couldn't get this type of battery life out of my EVO. Oh and here's the screen shot at the end of it all to prove the phone was actually USED, and not just sitting around.
to those that dont' know, when you see screen shots with a high percentage of phone idle and cell standby it means the person isn't really using the phone, just letting it sit, or only sending a text or something like that. Think about it - how much use is someone getting out of a phone if 20+% of the battery was used on IDLING/STANDING BY?
I think I'll try it again tomorrow since I have a longer shift, and thursday since I'm off and see if there's any difference.
The point of this post?
I wanna get even more tips to see if I can get more life out of this battery.
where are the people talking about they get 2 days' battery life out of it?
give me some tips to get to that level!!!
Click to expand...
Click to collapse
If you can flash an undervolted kernel, it makes a big difference. No task killer, and I wouldn't go with automatic brightness, it uses too much battery for my taste.
Anyway, I'm on CM6 with Snap kernel 5.01 and just got 22 hours 15 minutes with 30 minutes of phone calls, an hour 15 minutes of BT stereo streaming, approximately 1.4 GB of file downloads overs wi-fi, a good 30 or 40 text messages, and a bit of gaming, emails, web surfing, etc, where the display was on for 4 hours and 11 minutes... I was down to 4% when all done.

kris54241 said:
No difference...except setcpu u can run profiles...setcpu is free on xda find the forum
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Setcpu is probably a little more complicated than Overclock widget, figuring your a noob thats why I suggested that but it has been working great for me. To remove apps you must be rooted and if you are you can use root explorer.

the_hustleman said:
how?
Click to expand...
Click to collapse
depends on the rom - but titanuim usually works. Just don't uninstall any of the stock weather apps - i've heard those can cause issues if you unistall. Makes sure that they're not set up to sync though.
the_hustleman said:
would that function differently from overclock widget?
Click to expand...
Click to collapse
sort of, it's a bit more advanced, and allows you to set up profiles. There are enough "SetCPU Settings" threads out there, that you shouldn't have too many issues setting up profiles. Again though, depending on the rom/kernel, you may not want to use either.
the_hustleman said:
but idle and standby is doing NOTHING - that's what my phone was doing when I had it on airplane mode, but yet and still such a SMALL amount of percentage was being used.
Click to expand...
Click to collapse
not quite - it's not just that your phone is doing nothing, those items also show that they're waiting to do something. In arplaine mode they're not even waiting, so the percetages will be much lower. I don't think I'm explaining this well, but by putting your phone in airplane mode, its telling standby and idle to stop being ready, and basically turn off, so of course the total percent will be lower.
the_hustleman said:
I HAD TO put the phone on airplane mode for the simple fact that my job has a very low signal (I think Kroger INTENTIONALLY blocks cell phone reception because I get a full signal outside, almost no signal inside, and it's like that at EVERY kroger I ever go to!) and if I don't put it in airplane mode, my battery would have drained extremely fast.
the alternative is keep it off of airplane mode and have my battery die off in 2-2.5 hours. Yeah, I think I made the right choice in that instant lol, usually I don't use airplane mode except when I'm sleep
Click to expand...
Click to collapse
That makes perfect sense - what I was really trying to say is that if you're putting the phone in airplane mode for that long, your battery time should be MUCH better.
the_hustleman said:
I don't have the up time and awake time because I didn't think to do a screen shot of it.
Click to expand...
Click to collapse
not sure what you mean here - you can find uptime and awaketime under settings in about phone under battery. was really just curious about the numbers not necessarily a screenshot, although you should be able to a screenshot of any screen if you wanted - try shootme from the market. - edit: just reread what you wrote, I misunderstood what you were saying

e-motion said:
If you can flash an undervolted kernel, it makes a big difference. No task killer, and I wouldn't go with automatic brightness, it uses too much battery for my taste.
Anyway, I'm on CM6 with Snap kernel 5.01 and just got 22 hours 15 minutes with 30 minutes of phone calls, an hour 15 minutes of BT stereo streaming, approximately 1.4 GB of file downloads overs wi-fi, a good 30 or 40 text messages, and a bit of gaming, emails, web surfing, etc, where the display was on for 4 hours and 11 minutes... I was down to 4% when all done.
Click to expand...
Click to collapse
I thought about CM, but that rom sucks, it doesn't even have SENSE!
why on god's earth would anyone buy an HTC phone if they don't want sense?

the_hustleman said:
I thought about CM, but that rom sucks, it doesn't even have SENSE!
why on god's earth would anyone buy an HTC phone if they don't want sense?
Click to expand...
Click to collapse
R u kidding dude...sense is slow n Burns battery...get real
Sent from my PC36100 using XDA App

just use baked snack and you will get 30+ hours with super fast stable rom...by far the best rom out there

kris54241 said:
R u kidding dude...sense is slow n Burns battery...get real
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
so why would u buy an HTC phone (that's gonna come with sense btw) if u don't want it?
the facebook implementation is the greatest.

Battery Calibration didn't change anything!!!

Running stable CM 6.1 with cm kernel & followed the steps of calibrating battery & my battery lifes still horrible, currently 1 hour after calibration and already down 2 70% from being on internet & a few texts
Sent from my HTC Vision using XDA App

bnoot said:
Running stable CM 6.1 with cm kernel & followed the steps of calibrating battery & my battery lifes still horrible, currently 1 hour after calibration and already down 2 70% from being on internet & a few texts
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
have u got spare parts? open it up and look at battery history and the running vs screen on time.
they should be the same but i can almost guarantee that your phone is still running whilst the screen is off. you need to find out the app which is keeping a wakelock on ur device and delete/change its settings

Ok thanx..will try this
Sent from my HTC Vision using XDA App

adam18488 said:
have u got spare parts? open it up and look at battery history and the running vs screen on time.
they should be the same but i can almost guarantee that your phone is still running whilst the screen is off. you need to find out the app which is keeping a wakelock on ur device and delete/change its settings
Click to expand...
Click to collapse
Sorry for the noobish question, but can I compare the two. I went to spare parts and could not see where to compare screen on time vs running.
I recently tried to calibrate y battery, but sinse my screen does not shut off on its own as before. I've aleady checked the screen timers and all is as it was before.
Right now I am @ 4.5 hrs since I unplugged and I am sitting @ 76%, with little use...kinda sucks!!!!
Sent from my HTC Vision using XDA App

Crey23 said:
Sorry for the noobish question, but can I compare the two. I went to spare parts and could not see where to compare screen on time vs running.
I recently tried to calibrate y battery, but sinse my screen does not shut off on its own as before. I've aleady checked the screen timers and all is as it was before.
Right now I am @ 4.5 hrs since I unplugged and I am sitting @ 76%, with little use...kinda sucks!!!!
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Mines is pretty much the same way..only a few hours off charge n still draining like crazy
Sent from my HTC Vision using XDA App

bnoot said:
Running stable CM 6.1 with cm kernel & followed the steps of calibrating battery & my battery lifes still horrible, currently 1 hour after calibration and already down 2 70% from being on internet & a few texts
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
What kinds of widgets do you have running in the background and how often are they pulling data?
Also, how many days have you been on CM 6.1? I upgraded from RC3 and my battery life is much improved. The first two days it was eating a lot as it 'calibrated' itself but now I can easily make it through a full days use with about 40% to spare.
I adjusted my background widgets and how often they pulled data and this really helped my battery life. Also, a poor signal can have VERY ADVERSE affects on battery life. For example, I work in a prison where cell phone reception is awful. If I am at work for 3 hours and leave the phone in 3G mode, I can easily go through 30% battery while the phone tries to find a signal...

Any idea how long will it take the batt tocalibrate???? I did the recalibration process on thurday night, and my battery sucks now.
I'm sitting on 49% only 4 hours unplugged. Before I was getting somewhere around 55-60% at this time interval...
Any ideas?
Sent from my HTC Vision using XDA App

Crey23 said:
Any idea how long will it take the batt tocalibrate???? I did the recalibration process on thurday night, and my battery sucks now.
I'm sitting on 49% only 4 hours unplugged. Before I was getting somewhere around 55-60% at this time interval...
Any ideas?
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
bnoot said:
Running stable CM 6.1 with cm kernel & followed the steps of calibrating battery & my battery lifes still horrible, currently 1 hour after calibration and already down 2 70% from being on internet & a few texts
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
Alright boys try this. I got over 2 days worth of lifetime with this set up.
-Download SetCPU
Set your profile to 245/245 screen off with priority at 100%.
-Turn brightness to 0%
-Turn GPS off (Go to Settings->Location and Security-> turn off all that GPS crap
-Leave 3G off until you actually need it, then turn it back off after you're done with it
-Leave bluetooth off
-Don't have garbage widgets lying all over the place on 7 homescreens. I only have like 5 widgets spread out on 2 homescreens.
Are you guys running CM 6.1? Cause I am.
Did you guys overclock?
Thank me if it worked out for you =P

convolution said:
Alright boys try this. I got over 2 days worth of lifetime with this set up.
-Download SetCPU
Set your profile to 245/245 screen off with priority at 100%.
-Turn brightness to 0%
-Turn GPS off (Go to Settings->Location and Security-> turn off all that GPS crap
-Leave 3G off until you actually need it, then turn it back off after you're done with it
-Leave bluetooth off
-Don't have garbage widgets lying all over the place on 7 homescreens. I only have like 5 widgets spread out on 2 homescreens.
Are you guys running CM 6.1? Cause I am.
Did you guys overclock?
Thank me if it worked out for you =P
Click to expand...
Click to collapse
Convolution Thanks for the reply, but im more interested in getting a few more hours but with certain level of freedom. I am not all that interested in switching things on and off every time I need them, but I understand what you mean.
I'm looking to get 16 hours of moderate use...that should be plenty. I currently turn off wi-fi and gps since I seldom use gs, and wifi is governed by a profile manager, and it's on only at night.
but setting connection down to 2G, and killing all screen brightness renders the device (IMHO) useless. Also, SetCPU @245 100%, would really hinder the device.
I am running CM6.1 Stable and I am running OC'd @ 1497, but on "On Demand" profile, so to use only as needed.
I still have to try Pershoot's kernel, I think I will flash it tonight to see what happens.
I am also experiencing some oddity with my screen time-out feature...it's not working.....my screen refuses to turn off by itself, I have to lock the device physically for it to take effect....not sure what changed...but the regular parameters are set properly.

I'm getting 2-3 days with the stock WWE ROM that came with the phone. Brightness is set to Auto, but I keep GPS, BT, WiFi and mobile data connection off until I need them. Other than that, I talk about 20-40 mins/day, send out a few texts, listen to the radio, read my feeds and e-mail - pretty much everything the phone was made for.
IMHO, the "calibration" is bullcrap, it's just an impression that it lasts longer afterwards.

keinengel said:
I'm getting 2-3 days with the stock WWE ROM that came with the phone. Brightness is set to Auto, but I keep GPS, BT, WiFi and mobile data connection off until I need them. Other than that, I talk about 20-40 mins/day, send out a few texts, listen to the radio, read my feeds and e-mail - pretty much everything the phone was made for.
IMHO, the "calibration" is bullcrap, it's just an impression that it lasts longer afterwards.
Click to expand...
Click to collapse
Basically the same setup I have in terms of connectivity except for data.....does it really have that much impact on battery life?
What would I missing if I decide to turn data off?
Thanks!

Huge impact. Try it out for a day or two. Or just install Juice Defender, which disables it while the screen is off, turning it on at set intervals (like for 1 min every half hour) to let it sync.

Thanks Keinengel....I'll look up Juice Defender...sounds like the right thing!

i get atleast a day and a half out of my phone and i had it for about a week now. best battery ive had for a while now.

Wow guys...installed juice defender and pershoot's kernel, and only gone 1% in about 2.5 hour....I'll report again tomorrow
Sent from my HTC Vision using XDA App

How reach 2-3 days of battery with CM7?

Some people claim that, what you do ?

I'm pretty sure there's two possibilities:
1) they're exagerating
2) they barely use it
Peanuts ^^
Sent from my 1Ghz CM7 Defy

use GSM data only when you want and i am sure it will give you atleast 2 days..
If u dont get calls at all(5-6 calls a day), then you may get more than 3 days easily.
And dont forget to calibrate the battery after flashing a new ROM.

crakeron said:
I'm pretty sure there's two possibilities:
1) they're exagerating
2) they barely use it
Peanuts ^^
Sent from my 1Ghz CM7 Defy
Click to expand...
Click to collapse
the last time i checked, my phone only used about 0.5-0.6% of battery power per hr when in deep sleep (wifi, bluetooth and data all off). that equates to about 7 days from full charge!
technically that's how long my battery can last if i don't use the phone at all. so 2-3 days if used lightly is definately not exagerating

7days???
my defy can last 1day only!

Switch off data, wifi, gps.
Reduce screen brightness. (Display backlight consumes most of the battery)
Undervolt the cpu.
Use the phone as little as possible.
I'm pretty sure you can hit 2 days with this.
The maximum i've been able to get is 2 days. I got this only with minimal usage that i could manage. So it depends on how much u use the phone.

Buy a Nokia from the late 90's if that's all you do with your phones xD
The day the word "smart" was added next to phone, it changed everything
Sent from my 1Ghz CM7 + CM9 Defy

not posible, if you have disabled wifi and 3G, the most that is two days would
sorry for mi english

well my status of battery as below
about 2 hours of wifi
playing with phone for tweaks and looks installing apps for more than 5 hours
Around 10 calss more than 50 msging
I m left with 34% after 2 days
I switch flight mode on by 12 and switch it on by 7
Undervalted cpu default values
Juice defender

I think the setvel will make your battery longer

My battery barely lasts a full day with normal use :|
Sent from my MB525 using XDA App

I last 1,5 days with wifi off, 2G and green power...

my defy with latest quarx stable lasts 4-5 days and i never turn it off. Gps, wifi, gsm modem always off and 2G only: i manually activate them when in need.
It goes to deep sleep at night using max 3% of battery. During the day i switch on wifi or gsm module to check emails, gmail, the market and so on for a total of 1-2 hours. Lots of sms and some calls.
Check your sim card and if it's an old one change it with a 128k new one as it drains far less battery (it double your battery life)
Also a good battery calibration is very important (if not done well the phone never goes in deep sleep when it should) and doing 2 or 3 complete carghe/discharge cycles after the first calibration are very helpful.
Give it a try
Bye!

You can use over 2 days with minimum use. When I sleeping, My defy requires only 1% of battery an hour!
Sent from my MB525 using XDA App

There's a lot of people that barely use his phone.
in a day i have the wifi on 6hs. send a receive a lot of sms. maybe a litle call. play a litle of angry birds and at the end of the day i have 30-40% of batery

anyone tried MIUI vs CM7 battery use ?
well on CM7 when i put screen off it goes to deep sleep
where as on MIUI when screen is off it still shows that it uses cpu @ 300mhz
i dont know whats wrong i feel that it uses battery more..
anyone any idea ?

My 'spare defy' (without SIM, only WIFI) reaches multiple times of uptime.
So turning the radio off or (at least) switching data connections off increases battery live a lot!

asn39 said:
well on CM7 when i put screen off it goes to deep sleep
where as on MIUI when screen is off it still shows that it uses cpu @ 300mhz
i dont know whats wrong i feel that it uses battery more..
anyone any idea ?
Click to expand...
Click to collapse
you must have left something on that prevents it from going into deep sleep. i always have the following off:
1. data
2. wifi
3. bluetooth
4. gps
5. background data
i only turn them on on-demand, ie, when i want to use them. i don't use "pushed" email or auto sync features.
if you don't see deep sleep in cpuspy on a high percentage, you won't get good battery life.
edit: some apps that run in background might prevents it from going into deep sleep as well. check to see if that's the case for you when using miui.

well so i moved to cm7 and boom...
jh20 said:
you must have left something on that prevents it from going into deep sleep. i always have the following off:
1. data
2. wifi
3. bluetooth
4. gps
5. background data
i only turn them on on-demand, ie, when i want to use them. i don't use "pushed" email or auto sync features.
if you don't see deep sleep in cpuspy on a high percentage, you won't get good battery life.
edit: some apps that run in background might prevents it from going into deep sleep as well. check to see if that's the case for you when using miui.
Click to expand...
Click to collapse
Theres no deep sleep...max it uses 300mhz...i use setvsel to use default...shud i flsh SBF and try Cm7 again ??

Help me figure out how to improve the battery life

I am running AOKP M3 with franco kernel #15.2, turtle governor, 350/1000 w/ stock franco voltages. I also modded the auto brightness levels to ones of the MID mod. I use WiFi at home; I have set the power saver to switch to 2G after 1m of screen off time. However, I an unable to get more than 2-2.5h of screen on time no matter what I try. I plan to purchase the extended battery, but in the meanwhile what can I do to improve the battery life? I have the GSM phone.
Thanks in advance!

I've tried all sorts of stuff and 2 and a half hours is the most i've been able to get.
In order to do that I was using mostly wifi, auto brightness and I had undervolted as much as possible.
I've tried all different kernels and i've just accepted the fact that with this phone and the way I use it that's as good as it's going to get. To be honest i'm satisfied with that because in order for me to get 2+ hours of screen on time it has to be my day off, otherwise i'm too busy.
Also, i'm pulling 14-16 hours per charge with 2-2.5 hours of screen on time which in my opinion is great. I just want it to last all day and for me it does.

Try LeanKernel.
I get at least 4 hours battery life with:
Version: GSM GNex
ROM: AOKP Milestone 3 (power saver mode off)
Kernel: Lean Kernel
Battery: 2000 mAh
Frequency: 350/1200 Conservative
UV: Stock
3G/HSPA/LTE: 3G/HSPA and my network doesn't support 2G
What's off: BT, WiFi unless I'm home, Sync for Calender Contacts Browser and Photos.
Brightness: About 40-50%
Daily, I use: Netflix/Poweramp/Spotify/Reddit on my daily commute. Phone/Poweramp/Spotify/Reddit/Browser+ in between commute.
Even without the extended battery like you I would at least get 3.5 hours.

#1- people getting over 3 hours of screen time are on wifi the whole time, have 4g off, are minimalists with no syncing and no voice calls, or a combination of any of these.
#2 - based on your graph you have a lot of wake locks. Look at how often your phone is awake when your screen is off. That is KILLING your battery life. Disable or uninstall rogue apps, and turn off GPS and location services seems to help with this. Also reduce your amount of sync intervals if you can.
I have stock 4.0.2 unrooted GSM with extended battery.
Sent from my Galaxy Nexus using XDA App

republitarian said:
#2 - based on your graph you have a lot of wake locks. Look at how often your phone is awake when your screen is off. That is KILLING your battery life. Disable or uninstall rogue apps, and turn off GPS and location services seems to help with this. Also reduce your amount of sync intervals if you can.
Click to expand...
Click to collapse
Look at the betterbatterystats for wakelocks; looks like lookout kept half an hour, the rest are mostly sync.

Try to remove all widgets for a while. This can rule things out.

I'm running the exact same thing M3 with Franco 15.2 except I have the extended battery. This is with almost 0 idle time. Literally playing games, rrading forums, texting, etc.
Sent from my Galaxy Nexus using XDA App

Sorry posted wrong one. Here is my screen time.
Sent from my Galaxy Nexus using XDA App

Aww c'mon *cry*
I only have the calendar, clock and palmary weather widges (6 hour auto update). As far as I can tell Lookout and Sync are the *****es - literally. But that doesn't solve the idle drain, with the phone sleeping, it seems like 2-3% every hour or something like that.

That doesn't sound right. I have everything running as well. I don't use lookout any longer though. I'm sure if I just did the idle test I can get over a day of on battery time and still reach nearly 5 hours of on screen time. That's mostly Wifi which is suppose to drain more battery life, but I haven't seen the difference from being on 3G. This is a good set up.
Sent from my Galaxy Nexus using XDA App

I don't know if this is important but its a good note, I have not touched the performance settings or done any UV, not experienced enough, but I still produced those results.
Sent from my Galaxy Nexus using XDA App

I think you should try removing lookout. Take for example my awake times when screen is off. I sync Gmail, photos,remember the milk, and beautiful widgets.
Also major battery awake drain in beginning of my graph is due to streaming Google music when screen was off so perfectly normal.
Sent from my Galaxy Nexus using XDA App

Alright, I will remove Lookout. What alternative do you recommend, in case someone pick pockets my phone? Preferably free or cheap w/ Internet access. I'm thinking of Cerberus, as it'll be impossible for any wanna be thief to remove; I suppose the 3 EUR license is for device, right? Does it persist through ROM flashes (i.e. based on IMEI).
As for WiFi drain, on 3G it would be worse - it's longer range thus it needs more power and if the signal is bad (lucky I get top notch at home, not so at school), it's even worse.
When I get some more cash I'll order the extended battery and a dock off eBay, then I'll have a large main battery and the original one as a reserve.
EDIT: I've added the stats for this day. Better overall, the phone was used more intensively so getting a bit higher screen on time is good. I disabled Google Talk, I see it keeping the phone awake for a significant time, but I never use it. I also get rid of Palmary Weather and switched to the built in app, I'll see tomorrow how it goes.

The screenshots on the original post show sharp increase in battery drain when there is a) screen on and b) no mobile network signal.
In my opinion, these are two if the biggest culprits. The screen is obviously a power hog, especially with max brightness, and the lack of a network signal forces the phone to increase power to the radio in order to find a stable connection.

samizad said:
In my opinion, these are two if the biggest culprits. The screen is obviously a power hog, especially with max brightness, and the lack of a network signal forces the phone to increase power to the radio in order to find a stable connection.
Click to expand...
Click to collapse
Well with the screen there's nothing you can do; A big screen will use a lot of power, a dense screen with use a lot of power, both is even worse. If this were an LCD instead of OLED the battery life with Holo would be horrible. Turning the brightness even lower than my tuned auto levels is not an option - the phone would be impossible to use due to the glossy nature of glass. As for the network, I can't do anything about that - the school building is built from reinforced concrete, that sucks up the signal pretty well and it's downtown, where the signal is already quite shoddy; at home I have a celullar tower 1km away so I get excellent reception, not so downtown.
But I'm not complaining about those. I mean the background activity, mostly the idle wake time. I'll see what I get tomorrow now that I killed Lookout and Talk, those seemed to be two major hogs.

Seems like you have a lot of awake time. Try disabling Maps, Google+ and remove all widgets and test it for a day. If it is better now, you have ruled out signal problems.

Is there any way to reduce the interval of Google sync events? (gtalk_async_conn) When I was at home on WiFi I got a sync maybe once every few hours (seen as wake). As soon as I left and turned WiFi off the sync was like every 10 minutes, which is weird, as in the AOKP ROM Control power save settings I set it to PREFER WiFi.
Why do I get a LOT more sync wakelocks on mobile data than on WiFi when the ROM is set to prefer WiFi syncs?

best pattery save I have found is turning off various radios
I use an app Profile that can turn on/off bluetooth and wifi based upon the time of day. So it turns on wifi at 7 PM M-F and turns it off at 6 AM when I leave for work. I get great battery life, and I think it is due to the radios I turn on and off.

LeanKernel stable... all the way!!... ive tried his OC 1.42/230 but you start feeling the drainage...
Sent from my Galaxy Nexus using xda premium

Believe it or not, activating wi-fi when I'm at home has actually increased my battery life substantially. No need to even turn it off; at the end of the day, it takes about 2% of your total battery life.
Care to post the "Power saving" app you are using, TC? The one that can activate 3G after the screen turns off? For so long I've been looking for such a powersaving app.

Ways to save battery on a rooted G2/Desire Z?

I have a rooted G2/Desire Z. What are some ways that I could save battery? It seems it takes only a few hours for it to reach 50%. Granted the phone is now >2 years old and the battery is probably aging. I've done all the basics such as screen brightness set to auto, dim after 30 seconds, etc. etc. etc. What more could I do?
Alternatively, are there any apps that can control the phone/cpu to work a certain way to save battery life?
Thanks

valeous said:
I have a rooted G2/Desire Z. What are some ways that I could save battery? It seems it takes only a few hours for it to reach 50%. Granted the phone is now >2 years old and the battery is probably aging. I've done all the basics such as screen brightness set to auto, dim after 30 seconds, etc. etc. etc. What more could I do?
Alternatively, are there any apps that can control the phone/cpu to work a certain way to save battery life?
Thanks
Click to expand...
Click to collapse
Setcpu,set screen off profile to lower clock..freeze some bloatware up..and also try v6 supercharger
Sent from my HTC Desire Z using xda app-developers app

Easiest way:
Uninstall fabebook app, flash a sense rom where you can access most fb functions without the app.
For real, my battery life went from about 10% an hour to 4% an hour on average.
Sent from my HTC Vision using xda app-developers app

Honestly, way number 1 is to get a new battery. Old batteries just start to drain much faster as they get older. Pick up an Evo Design 4G stock battery for a nice boost.
2. Turn brightness off auto and put it as low as you can handle. Keep a brightness slider on your notification bar for those situations you need to turn it up quickly.
3.Turn everything that "syncs" off of push and set it for 1hour+ intervals if possible.
I have had great standby time using the OC daemon that is packaged with the mimicry ROM as well.

There is this trick that helps. On a monthly bases drain the battery and re-charge with the phone on ie also a good Rom an a good radio version like .19 will keep your battery good don't use lots of ram manager apps and bettery saver apps the run backgroung processes that drain your battery fast
HIT THANKS IF I HELPED
Sent from my HTC Desire Z using xda premium

With 2 year-old battery there are only 2 options:
1. Replace the battery
2. Buy a new phone

mruwek said:
With 2 year-old battery there are only 2 options:
1. Replace the battery
2. Buy a new phone
Click to expand...
Click to collapse
^This (regards to #1), and working batteries are rather cheap, the fat one I got (3500mAh) was 9$, but you can easily get a stock replacement of the 1300-1500 range to fit with the default battery cover.
Far as tips, rooted or not:
1) Screen to automatic, or avoid 'full brightness'. Your screen consumes the most of your battery, automatic or lower brightness can improve the life significantly. This is the big one as your screen will typically be 80-90% of your battery life.
2) If you are near wifi often, System Setting -> Wifi -> Advanced (via menu) -> Sleep profile to always on. This will set it so that the wifi connectivity is always on even with the screen off. A connected good wifi connection uses far less battery than your 2G/3G data constantly searching for a good or better data connectivity. Simply turn off wifi completely when not in an area with wifi (or if you're driving around).
3) Avoid unnecessary applications. Don't use twitter? Freeze/Disable the application under manage app or under Titanium Backup (generally it's not good to 'uninstall' an application completely if it came with the rom).
4) SetCPU with profiles is one way to do it, unless your rom comes with a CPU Daemon already (ie: mimicry with virtuous OC Daemon), When setting a "screen off" profile, try not to go below 768mhz for the maximum, as going with 384mhz for example may be too slow for the phone to effectively wake up when a call or notification comes in.
5) You can use an app such as Tasker (not to be confused with task killer). Where you can assign automatic tasks, such as automatically setting Radio to 2G when connected to wifi (some roms like AOKP do this automatically under power control), or other tasks depending on the circumstances.
6) The first time you get a new battery, make sure you leave it on the charger for a good 5-6 hours so that it accurately 'tops off', the phone won't know accurately what's 100% and what's 0% until it has been fully charged (least 6 hours minimum), and fully drained, after which it'll more accurately report your battery % as it's used and will have more accurate usage stats.
7) If you're a T-Mobile subscriber, consider the 26.13.04.19 radio as well as the T-Mobile Wifi calling app, wifi uses less power in the long run than your radio via cell towers. If you'll be in a location that has wifi often you will benefit from this over not using Wifi Calling. (The main downside is you cannot currently send/receive MMS over wifi calling, but Calls and SMS[txt] work fine). Even if you don't use the wifi calling app, the 26.13.04.19 radio provides better battery life over the older one.
---------- Post added at 10:53 AM ---------- Previous post was at 10:48 AM ----------
strip419 said:
There is this trick that helps. On a monthly bases drain the battery and re-charge with the phone on ie also a good Rom an a good radio version like .19 will keep your battery good don't use lots of ram manager apps and bettery saver apps the run backgroung processes that drain your battery fast
HIT THANKS IF I HELPED
Sent from my HTC Desire Z using xda premium
Click to expand...
Click to collapse
Course it helps to clear battery stats before performing this task so that the OS/Battery-Stats records the new maximum and minimum values of the battery. Though you don't need to do it monthly, I would say closer to 6 months would be appropiate if you don't want to make a monthly habit of it.
You mainly only do this on account of battery aging (over time the battery will not hold as much charge as it once did), You normally know if you need to do this task again if it appears to be on 98% or 99% forever never reaching 100%, meaning that the battery is no longer able to hold the juice to provide the former-maximum mV value, re-doing the battery stats simply makes the new maximum marked as 100%.
PS: Strip419, on an off-topic note, I tend not to 'thank' people who ask/beg for it. If your post is worthy of thanks, they'll be clicked on their own accord.

OK MAN I'LL KEEP THAT IN MIND
Sent from my HTC Desire Z using xda premium

Best rom I've ever used for battery life is EliteMod. That rom did something crazy, cause my phone lasted for days before it need charging, and I use facebook and all that good stuff. It's not as fast as other roms, but battery life is certainly the best on that rom.
Also yea, before with stock battery my phone would last a day at best, and now I have a 1800 battery that makes it last for 2 days easy. So if your phone is at least 2 years old, get a new battery. They're dirt cheap on Ebay or Amazon. The phone comes with a 1300 stock.

simply change for normal use 2G instead of 3G.

A couple of questions--I'm using EliteMod CM7
kbeezie said:
2) If you are near wifi often, System Setting -> Wifi -> Advanced (via menu) -> Sleep profile to always on. This will set it so that the wifi connectivity is always on even with the screen off. A connected good wifi connection uses far less battery than your 2G/3G data constantly searching for a good or better data connectivity. Simply turn off wifi completely when not in an area with wifi (or if you're driving around).
Click to expand...
Click to collapse
My Advanced settings don't look quite like yours, alas. (I'm using EliteMod cm7.) The section is entitled "Wi-Fi sleep policy, Specify when to switch from Wi-Fi to mobile data" and the only options are " When screen turns off," "Never when plugged in," and just plain "Never." I assume that the "Never" option, that is, never switch from Wi-Fi to mobile data, is what you mean...that is in any event the default (set by this particular ROM?)
But my problem goes beyond not quite understanding the semantics of "Never" (off?) vs. "Always on." What I continue to find odd is that my highest battery usages, at least according to Battery Monitor Widget, are never the screen at all; rather they are cell standby, Wi-Fi, phone idle and Android System...Display is down at 6% just now, for example (and I've been up for hours, have read the news on the phone, emailed, texted, etc. This is on EliteMod only, btw, I used Flinny's latest build (.94?) for a few days recently, and while battery usage was worse, at least the display was at the top of the list, where it (presumably?) belonged.
I have all the latest and greatest tweaks from the the forums (for cm7 roms, that is) the .19 radio and sd-ext and all ext4 partitions. Am running the generic 3500mah "fat boy" battery...drained and refilled several times, all according to instructions...mine only shows maybe, umm, 2300 or so mah, but that's not the issue for just now...it's why my usage looks so odd, and how to fix it, if need be.
thanks to all,
p-d
oh yeah. I have long used (pre-rooting) Lookout and Pouzerate's Green Power free apps...have now turned them off (well, uninstalled them, in fact) just to see if, indeed, battery helper apps make things worse, running in the background... any thoughts on that topic would be welcome as well.

Moving to Q&A