Database Develop

[Q] Battery Life on Froyo (Dream/Sapphire)

Simple Poll.
Have you seen a decrease or increase?

Someone can explain this battery drain?
in a lot of roms based on 2.2.1 there is a big battery drain, in some other there isn't.

nagash91 said:
Someone can explain this battery drain?
in a lot of roms based on 2.2.1 there is a big battery drain, in some other there isn't.
Click to expand...
Click to collapse
Reboot after unplugging from USB and battery drain is gone. For further improvement install SetCPU and reduce min/max frequency. I am getting more or less the same lifetime as with donut ROMs.

AndDiSa said:
Reboot after unplugging from USB and battery drain is gone. For further improvement install SetCPU and reduce min/max frequency. I am getting more or less the same lifetime as with donut ROMs.
Click to expand...
Click to collapse
OK I have done.. but the problem is that when I use it 3 o 4 minutes (for example I install an application using a file explorer, then I read a message and then I come back to home) m battery get 5% lower...
In standby I lose 10% in 6 - 7 hours (I think this is normal).

AndDiSa said:
Reboot after unplugging from USB and battery drain is gone. For further improvement install SetCPU and reduce min/max frequency. I am getting more or less the same lifetime as with donut ROMs.
Click to expand...
Click to collapse
I am currently without a computer therefore immune to this USB bug. I flashed CM6.1 to this and the other g1 and both suffered substaintial amounts of battery drain so I nandroid restored back to CSDIv4 and still the lowest frequencies and settings did little to combat the descending digits. So I tried this...
Recalibrated my battery
Flashed SuperWipe.zip
Reboot
Flashed SparksMod's latest
Reboot
Wiped battery stats
Unplugged...reboot
Battery lasted 23 hours the first day never seen anything like it.
Lifes great.
Sent from my HTC Grandaddy via XDA app
Sent from my HTC Grandaddy via XDA app

I'm using TMUS-G1-Froyo CM6 remix..
and I'm using the new radio with +14mb.
The rom flies but the battery go down too fast.
I'm using setCPU with 256 - 528 mhz while screen is on, 122 - 256 mhz while screen off.
If I go to battery use in settings I see
Cell standby 45%
display 28%
phone idle 22%
android system 3%
I don't think is normal... cell standby is the battery use by cell radio..
I wonder if the new radio give a big battery drain..

nagash91 said:
I'm using TMUS-G1-Froyo CM6 remix..
and I'm using the new radio with +14mb.
The rom flies but the battery go down too fast.
I'm using setCPU with 256 - 528 mhz while screen is on, 122 - 256 mhz while screen off.
If I go to battery use in settings I see
Cell standby 45%
display 28%
phone idle 22%
android system 3%
I don't think is normal... cell standby is the battery use by cell radio..
I wonder if the new radio give a big battery drain..
Click to expand...
Click to collapse
I got real excited when I heard about the new radio and hboot even thought that its exclusion was the source of the the battery issues. Haven't been able to try it as I'm without a up-to-date PC at the moment.
It would be real nice if I could find a seasoned dev who understands battery consumption. I thought the kernal was the main culprit but I've tried two different roms with the same kernal and one has notably better battery life than the other. So confusing.
Sent from my HTC Grandaddy via XDA app

I can't use my phone with this battery drain...
I will come back to official android OTA-AOSP 1.6.. with +14mb.
So I'll test if this kernel with 14mb is a cause of battery drain.
PS: I'm not a lover of rom customizations.. I think the official roms are the best.
The other are all too heavy. I'm not a fan of cm kernel, that is too heavy for g1.
I would see an official OTA 2.2 without customizations, so every one could customize as he want, and if he want.
PS: OK I flashed AOSP 1.6 using ezBiff_kernel to have 15mb (cause I have new radio and spl, so I can flash roms only using this kernel).
Result: my battery life is similar to froyo 2.2 roms... so the problem is:
1) Kernel? (ezBiff_kernel is based on cyanomod kernel... ... ... heavy as death)
2) New radio/spl?
3) My battery (I don't think so.. it's new battery. I buy it 2 weeks ago and in the beginning it works so well.. but then I flashed new radio/spl and new kernel for 15mb..)

nagash91 said:
1) Kernel? (ezBiff_kernel is based on cyanomod kernel... ... ... heavy as death)
Click to expand...
Click to collapse
Come now.. the cm pershoot kernels are super optimized so they don't collapse under the heavy as death rom that is usually on top of it..
I get mixed results with that kernel between testing and feedback.
A test phone can idle on wifi+2g for days on the stock g1 battery even after a usb unplug.. but on more common use with syncing services its not performing as well as I'd like..
Some of it is fixed with less swap/compcache or changing clock speeds 122/480 for most the speed but lower voltage levels. Also the interactive governor may work better.. I'm testing these ideas if results are good my next kernels defaults will use them.
Cm/pershoot have some interesting new power management code from other htc devices.. So hopefully soon all will be better. (I merged most of it to my kernel but there are some loose ends.. works well untill the phone locks up.. so no public release yet)

ezterry said:
Come now.. the cm pershoot kernels are super optimized so they don't collapse under the heavy as death rom that is usually on top of it..
I get mixed results with that kernel between testing and feedback.
A test phone can idle on wifi+2g for days on the stock g1 battery even after a usb unplug.. but on more common use with syncing services its not performing as well as I'd like..
Some of it is fixed with less swap/compcache or changing clock speeds 122/480 for most the speed but lower voltage levels. Also the interactive governor may work better.. I'm testing these ideas if results are good my next kernels defaults will use them.
Click to expand...
Click to collapse
Ok sorry I talk without knowledge. I really don't know the effect of the cm kernel. I only know that all roms based on cm release, with cm kernel, are so heavy and slow.
I like your rom (2.2.1 AOSP) and I love your new way to get 14mb.
But I have this orrible problem. My phone has a lot of battery drain when I use it. With screen off, no problems.
I have never used swap or compcache in this days, and I also try different clock speeds (not over 528mhz).
The result is that when I unlock my phone, I go to settings, I see for example 95% battery. Ok, I return to home, I open a message, I return to home, I open contacts and I scroll some contacts without make calls.
Then I come back to battery settings and I see that is 92-93%..
in 2 minutes of soft use.. I think this is impossible. If I open stupids 2D games... ahah in 5-10 minutes my battery lose 10 - 20%.
I remember 1 year ago, with 1.6 (no cyanomod) my battery was good.
Now it isn't (I have a new battery).
Today I flashed aosp 1.6 with your kernel for 14mb (I have new radio&spl) but nothing... I lose a lot of battery percent as in froyo.
So I think problem is or battery calibration, or something to wipe, or cm kernel, or new radio&spl + your new kernel...
Now I'm recalibrating battery (is at 1% from 2 hours, I'm not using it.. ) then I will recharge for 8 - 9 hours and then wipe battery state, but I have done this process a lot of time without a benefit.
I'll try to remove the new radio+spl (so also using standard kernel) if my battery continue to lose percents so fast.
I'll keep you update on my "story".
PS: Sorry for my bad english!! XD

OK.. after a day of low discharging and a night of 8 hour of recharging, I wiped battery states, I wiped data-cache-ext ecc... I flashed aosp 1.6 and ezbiff kernel..
"battery drain" continue...
I will try tomorrow to reflash death-spl and old radio..
BTW, is normal for hours battery 4v at 90%?
On the back of the battery sais 3.7v... I thought 3.7 was the voltage for 100%

Update
I know this thread is a little old, but I ran into this problem as well. What I found was that the official US radio (2.22.23.02) used considerably more battery than the international one (2.22.19.26i). The other thing I noticed is that switching to "use 2G networks only" in mobile networks settings and disabling data over mobile drastically improved battery life.
I also noticed that wifi used a fair bit of juice so my recommendation is to disable wifi if you're going to be on the go for a bit, and disable data/3g if you're just going to be hanging out in the local webcafe, your/a friend's house, or some other location with wifi access for a while.
If you wanted to be ambitious and cared enough you could write a script to use as a shortcut on the home screen to do the swap automatically (detect which setting(s) are enabled and swap them to the opposite).
With those changes, you should get much better battery life. My thoughts on different Froyo flavors is that possibly different builds have different settings by default. Cyanogen comes with data and 3g enabled by default so this will quickly suck out your battery if you're running your 3g, 2g and wifi antennas all at once.
The stock build (1.6) got about the same battery life as I'm getting now with those settings applied. With either build, having all antennas on all the time will drain your battery very rapidly. Being a little more cognizant of the settings (perhaps you also had it set to 2g only on the stock build) you're using will significantly improve your battery life. And when I say significantly, I mean night and day (but the antenna version definitely does also make a difference... at least in my case).

ROM Alternative

Right now I'm using cyanogen 6.1 but I'm noticing a lot of battery drain and on my car charger my phone continues to drain even while charging. I don't want to go back to stock because I love features like portable wifi, but I'm a heavy user and I need solid battery life. Any ROM suggestions for me that I can flash through clockwork while I'm at work? Or any ideas on how I can fix the battery on my current CM ROM?

first about the battery life... Got to settings, about phone, battery use. What is eating up your battery? usually display eats up most of my life. Try turning your display down... Maybe you have a rogue app running in the background eating up your juice?
As for ROMS, the stock ROM does have wifi hotspot and USB tethering. Perhaps try the stock ROM for a while and see if that makes any difference? It could be a battery problem/ issue. There is a great app for CM that allows you to see your battery life/wear @ http://forum.xda-developers.com/showthread.php?t=765609
The ROM I have been using is here: http://forum.xda-developers.com/showthread.php?t=714184. It is very close to stock, but has many performance tweaks and such. I use it with this kernel : http://forum.xda-developers.com/showthread.php?t=820172. By far the best battery life on any ROM/kernel combination I have tried. Both can be flashed by Clockwork.
Also, when Gingerbread finally gets here, there is a much updated and detailed battery meter installed with graphs. Hopefully it will only be a few more weeks.

Battery performance across ROMs

Hello all-
I wanted to start a thread to discuss battery performance across the various ROMs available:
1. Nookie Froyo (including NookieComb based on Froyo)
2. CM7 (Latest build)
3. Rooted stock
1. What ROM do you guys use and how is the battery performance?
2. How do you maximize battery performance? Kindly list the settings if you can.
Thanks,
mg
(Post edited)

Phiremod is completely based on CM7,it's just a themed version. So I actually doubt there's any difference.
I have a question too. Has anyone tryed battery calibration? I'm not sure this app supports tablets though.

Qwenjis said:
I have a question too. Has anyone tryed battery calibration? I'm not sure this app supports tablets though.
Click to expand...
Click to collapse
I never tried it but that would make only your battery readings more accurate. IN CWM its also possible to recalibrate i heard. Never tried it though.
Most ROMs have allready been tweaked pretty much. I'm on Nookie Comb (2.2) however just because there is still a bug in gingerbread (w/ or w/o CM7) preventing 'deep sleep'. So the device is still active when you press the power button. That cost me about an 2% and hour equals 48% in a whole day. (just idling). They (devs) are looking into it ATM.
Honeycomb preview also has the deep sleep bug.

Qwenjis said:
Phiremod is completely based on CM7,it's just a themed version. So I actually doubt there's any difference.
I have a question too. Has anyone tryed battery calibration? I'm not sure this app supports tablets though.
Click to expand...
Click to collapse
In the past, I've just cleared the Battery Stats in CWM when flashing CM7. Be sure your battery is fully charged for the most accurate readings.

Ah, that's why CM7 drains battery. Did not know about that bug. Hope they fix it soon.

I did an over night battery test with only the released CM7 on the SD card and it was draining about 0.8% per hour using the built in battery meter. I don't know how accurate a test this is but the result was better than the 2% drain that I saw posted else where.

battery saver

hi, currently i am on darky rom 10.4.2 xwjw1 rom... i have tried different modems on it.. i am happy with the rom but only problem is battery.. i am not happy with battery life.. will going to semaphore kernel will help battery life??? or give any other kernel or rom that gives me more battery life like upto 2 days... if performance degrades little than its ok with me.. is there any hack or scripts which will improve battery life??? battery juiced a lot when using 3G.. please help me guys... any good battery saving ICS rom will also do..

With Darkys i had the "best" battery with XXJVQ, Semaphore and turned off 3g. Just had a widget to toggle 3g quickly. That just saved 20% a day for me.
And i know thats not exactly that what you want but moving to ICS increased my battery life pretty much

vrs8 said:
With Darkys i had the "best" battery with XXJVQ, Semaphore and turned off 3g. Just had a widget to toggle 3g quickly. That just saved 20% a day for me.
And i know thats not exactly that what you want but moving to ICS increased my battery life pretty much
Click to expand...
Click to collapse
thanks for replying.. but i use 3g internet and i do switched it off when not required.. and i am ready to move to ics rom... which ics rom are u using??? what combination gives best battery life??? also give links if possible...

Well, first of all, there applications that are supposted to increase battery life. For a few examples, you could try Juice Defender(my personal favourite) or Watchdog Task Manager. I personally did try some GB Darkys' rom, and I wouldn't recommend it. The battery life was terrible. I'm now running WeUI, an ICS rom. I also tried CM9, and it had a pretty good battery life, but it's not really what I would recommend you to use as a daily usage rom.
You might also want to check your screen brightness settings, I personally have mine set at "automatic".
Also I'm not that sure if semaphore has a good battery life. I heard that Icy Glitch has better, but I am still running semaphore 1.0.0.
Let me know if those apps make any difference!

Back in the day when i was a darky user, i also tried semaphore and hat good results with it, 2days or more were common. I used BUJV3 modem mostly. But generally I had 2g running. The battery life always drops a lot when you constantly turn 3g on. Btw moving to ics reduced my battery life, I charge every night (sometimes earlyer).

i have juice defender... also i turn off the 3g when not required... and i have set the brightness to minimum.. but still i want to conserve more battery... can any one give me the kernel which uses lowest battery without much performance lag??? any ROM??? any good ICS ROM with good battery???

you can undervolt..
http://damiangto.emc2production.org/viewtopic.php?f=11&t=314

I was using an app called SuperPower XDA-BETA v0.80, that can be found on market.
As for me it's the best app for customising power usage, a bit tricky, and rot needed for most features, but I was finally able to prolong my battery life to 2,5 days.

i don't think so apps can save much battery as it will switch of the radio services which i am already making off when not required.. i am talking about battery Hacks or Kernel or ROM which will give extra battery power???

]Dude you want to use 3G too and still want battery life of upto 2 days !!! quite a dream...
anyways few things you can try on.. these are not hacks just tips
- remove any widgets on your homescreen
- turn off autosync
- don't use any constantly updating apps like weather, clock widget etc
- turn off auto rotate (read in some thread this as a tip too)
- don't use automatic task managers
- don't use any battery saver, turn off the data manually when not using everytime
- don't use live wallpaper and try to use some dark background image preferably black
- use some black and white theme
- remove/ freeze as many system applications as possible which don't affect your normal functioning and the apps that you don't use

Battery issue with Stock ICS/CM9 ?

So I've been testing CM9 for quite a while now and can't help notice the battery life has been reduced heavily compared to Honeycomb 3.x.
Now, I don't mind that my battery life gets a bit shorter as ICS brings more features and might be more power hungry. But I went from my tab being able to hold a charge in standby mode in 3 weeks to barely 3 days. And if I use it more heavily, it barely holds a day, which is worse than my Motorola Atrix and that's just not normal.
Now, I've been discussing this with pershoot and for him it must coming from something I do. Honestly I don't see what. In the Honeycomb days, I used to have so many apps installed (may 100-150) and battery life was fine. In CM9, I'm running 50 apps, the essential ones. All the apps that could be power hungry have those settings set to off. No push notifications, very large updates intervals (a day) or none when possible. Also, I run most on these apps on my Atrix (which has more apps installed) and my battery life is way better on the Atrix.
In usage itself, I don't see any change, it seems the tab consumes the same amount of battery than before. It's the sleeping battery life that is terrible. In my case, in sleep mode, wifi is off, brightness is set to Auto and data is off (not the signal itself but I tried to take off the SIM and the battery life is the same).
Honestly, not having to care about charging every day is a must feature for a tablet.
I'm running now RS125 ICS, based on stock and the issue is also there. So I wouldn't say it's something related to CM9 but more on how ICS behaves with our tab.
I've read report of other people complaining (with the 10.1 also) so I wonder if it's a general issue. Could you please fill the poll so we can see if there's an issue and if so, how could we identify it ?
Don't hesitate to describe your tab usage and battery life !
Thanks !

For me worsts battery life was with the official 3.0.1. 3.1 was big improvement. 3.2 and 4.x were a little bit better than 3.1.
Got gmail and exchange push notifications turned on, but most of the time the tab is connected to the wi-fi, not to the 3G network
Attached is my personal stand-by record on the 10.1v. I think it was with one of the first pershoot's CM9 roms

Hi Danny,
Same for me. Especially the standby mode I see a battery drain.
By the way, somehow my battery usage is not working since I moved to the official ICS ...
Cheers

No problem @all. Stock 4.0.4 with OC kernel.. Looks like this:
GT-P7500 [email protected]

Kernel info...
GT-P7500 [email protected]