Battery life

Discussion in 'ChevyNo1' started by iWordplay, Apr 23, 2011.

  1. iWordplay
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    iWordplay New Member

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    I'm running SS 5.2 and at first battery life seemed awesome. Then I realized when my phone reads 50 % battery it'll drop to 20% in a flash. Is it just me?

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  2. haxerpaylay
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    haxerpaylay New Member

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    Mine does the same no idea how to fix it.... :/

    Moto Droid / S.S. 5.2
  3. Ma_USMC
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    Ma_USMC New Member

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    Yep, same here. However, I did use one kernel that went to 40% before it next jumped to 20%.


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  4. dboss007
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    dboss007 New Member

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    Having the same issues here. No clue why it isn't registering the correct battery life remaining.
  5. redstorm64
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    redstorm64 New Member

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    I've had the same issue since 5.2. Overall my battery life has been very poor, not lasting more than a day even with minimal use (will auto power off before the end of the day). Any ideas? I haven't tried reinstalling 5.2 yet...maybe I'll try that after work today.
  6. Ma_USMC
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    Ma_USMC New Member

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    Well, truth is my battery life is fantastic even with the possibility its not reporting with accuracy. I'm sure that you've covered the basics about eeking out the greatest amount of battery you can but good advice would be to swap out the kernel.

    Try a kernel or two and compare. Keep your tests controlled (duplicate as best you can, your level of usage) and see what you can get for battery life.

    I'm on Chevys LV 1.1ghz running at 1.1ghz/125mhz (max/min); this was the biggest gain for me after trying all the LVs and ULVs. I also tried several of the rMod kerns on Smartmod but found Chevys longer lasting.

    However, big note here, I did notice the drop in battery life on all of the kernels I used.
  7. 1FZFE
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    1FZFE Member

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    I've been running 5.2 for a week. This is the first time I've tried a Chevy rom. So far I'm impressed! Its fast and stable. As to battery life, I'm currently at 50 hrs 11min and 5 sec on a single charge with normal use. Haven't seen 2 + days of battery on my phone ever. Even when I was tweaking my own custom slots and voltages, performance wasnt this good. Well done sir!

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  8. Picaso86
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    Picaso86 New Member

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    When I first flashed SS 5.2 the battery was great but I noticed a few days later it drops from 60% to 40% instantly. can someone look into this? I tried mods that comes with the ROM but its remains the same. maybe can someone recommend a good kernel?
  9. LT*
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    LT* New Member

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    I've been running it since it came out, and I've never seen this behavior. Although I rarely get below 50% by the end of the day, I have been down that low and not seen the sudden drops.
  10. redoregon
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    redoregon Member

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    Are you guys resetting the battery stats when you switch kernels? I'm in an area I can't access my phone from, but do a search on "battery statistics" and the instructions should be pretty easy to find.
  11. 1FZFE
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    1FZFE Member

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    This problem is not unique to Chevy or even GB builds for that matter. I have had it pop up with PE4.2 in the past. I believe the issue stems from gaps in the battery stats. Doesn't the battery info get nuked with full system wipes? If you are flashing new roms with a full wipe and not on 100% charge you may be creating issues for yourself. Kernel hopping has caused some battery reporting problems for myself in the past as well. Clearing your battery stats per appropriate protocol may help.
  12. Art Vandelay
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    Art Vandelay New Member

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    I have similar problems with mine. Running the standard kernal that is packaged with the rom. I also notices that from 15% to shut down takes an extremely long time. It goes to 40 pretty quick, but 15-0 takes like 3 times as long.

    I used the battery calibration app but didn't seem to help.

    Also, my phone seems to charge extremely quick when at 40% or more. I think I may need a new battery as it's 1.5 years old now.

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  13. redoregon
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    redoregon Member

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    Note we're not talking about an *app* here, but rather booting into recovery and wiping battery stats from there. You do it either after a full battery drain and before recharging to 100%, or after a full battery drain then charging back *up* to 100%... I forget which.
  14. 1FZFE
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    1FZFE Member

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    Full charge, wipe stats, drain to dead, fully charge again.

    I would probably drain to dead again for full measure, but it might not be necessary. After this you should see improved battery reporting. If you are clearing stats in a program other than recovery, you should reboot after clearing.
  15. redoregon
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    redoregon Member

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    There you go... that's what I was after! Thanks for translating my gobbledegook! :clap:
  16. haxerpaylay
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    haxerpaylay New Member

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    I reset battery stats on almost every flash, on a full battery. Still I have not noticed any difference. I have also charged to full and drained dead makes no difference. :/

    Maybe its because my battery is old, its a over a year old and used heavily.

    Moto Droid / S.S. 5.2
  17. 1FZFE
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    1FZFE Member

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    It may be the battery age. I do not routinely wipe my stats separately with rom installation. I just make sure to have a full charge before flashing. It does not seem like it would matter either way though; that is assuming the battery stats are wiped with a system format, which I assume is correct. Can anyone confirm?

    Some folks early in the CM7 builds (months ago) were having similar issues with gaps at the 40% to 20% range that did not respond to the normal battery stat fixes. This may be similar, but the large jumps I have experienced in the past, ie 60% to 20% in 1 second, were solved with a battery stat wipe.

    As usual it seems each individual device responds uniquely to our constant fiddling :)

    Edit: Stats are located in the system data files and are cleared every time you format the system.
  18. Bang Pow Boom
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    Bang Pow Boom New Member

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    I had the same problem today .............80% to 20% in 10 minutes.

    To wipe battery stats do you go into recovery (RaidZero) / wipe /
    wipe battery stats?

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  19. 1FZFE
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    1FZFE Member

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    Not sure. I don't use raidzero's recovery, but sounds reasonable :) In clockworkmod its under advanced options.

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  20. redoregon
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    redoregon Member

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    I use RZ, and yes, that's it.

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