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Support Battery Cycling Advice, Please

Discussion in 'Android Devices' started by djcs219, Jan 3, 2012.

  1. djcs219

    djcs219 Well-Known Member
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    Hi all...so I purchased my Nexus on opening day and had bad problems with the battery. I returned it and got a new one and the battery life was great. Was getting over 8 hours a day on the extended battery.

    So I decide to take the plunge and root my phone. I did it, works great but it obviously factory reset my phone and now I have horrible battery life all over again, even though I thought the batteries were cycled.

    Any advice on how to cycle the batteries again to get that amazing battery life back? I find it hard to believe that the root is what set it back. Thanks.
     

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  2. jraskell

    jraskell Member
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    Lithium batteries don't require any sort of cycling to increase their capacity. Worded another way, lithium batteries don't get any capacity increase as a result of any sort of cycling.
     
  3. hlsilver

    hlsilver Well-Known Member
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    From my understanding, the cycling helps the battery meter give you a more accurate read on what your percentage left is. The phone has sort of a "learning curve" where the phone will slowly learn how much battery is left and how much has been used etc over time giving the battery meter more accuracy. I would assume that when you Rooted it reset everything the phone had "learned" so it will just have to relearn it.
    This is just my assumption however, so I very well could be wrong.
     
  4. djcs219

    djcs219 Well-Known Member
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    Ugh its brutal...before I was getting the best battery life. Was loving my phone and I go and root it and I am lucky if I get 4 hours out of an extended battery. That can't be right. How can I go from 8hours+ on the extended battery before and now I am lucky to get 4?

    I would appreciate any ideas. Or did anyone have any similar problems?
     
  5. streetfish

    streetfish Well-Known Member
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    just use the same battery charge all the way and run it down all the way and repeat a bunch of times, 6 or more. try charging with the phone off also. it should get better
     
  6. binary visions

    binary visions Android Expert
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    You can "force" the battery cycle by doing this:

    - Install Clockworkmod Recovery (root forum has instructions for this)
    - Charge the phone all the way
    - Reboot into Clockworkmod Recovery
    - Navigate to Advanced, then select Clear Battery Stats
    - Unplug, reboot, and use the phone until it shuts off
     
  7. binary visions

    binary visions Android Expert
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    (When I say "use the phone" I don't mean "don't put the phone down until it shuts off." Just don't charge it until the battery has dropped so low that the phone turns off.)
     
  8. kylecummins

    kylecummins Android Expert
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    Im getting 16+ hours on regular battery, id say somethings wrong


    Try downloading batteryleft from market and calibrating/monitoring your battery
     
  9. trophynuts

    trophynuts Android Expert
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    not necessarily. Just because your getting 16+ doesn't mean other people will .



    All of the battery stats is extremely subjective. What is normal use to me might be moderate use to someone else.

    So just because you get a certain amount of hours of use and someone else doesn't get that. That doesn't automatically mean that something is wrong.
     
  10. kylecummins

    kylecummins Android Expert
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    Hes getting four hours on an extended battery, seems like something is wrong.

    But obviously my usage isnt as heavy as him, however even if I use my phone non-stop it will last longer then 4 hours on the stock battery.
     
  11. djcs219

    djcs219 Well-Known Member
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    I think I figured it out I think. The battery needed to be calibrated. I downloaded the free battery calibration tool and so far its worked and I have my battery life like I did before.
     
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