iPhone Bad battery life? Here's a solution

Discussion in 'Jailbreaks and iOS Hacks' started by oplix, Feb 21, 2013.

  1. oplix Suspended

    oplix

    Joined:
    Jun 29, 2008
    Location:
    New York, NY
    #1
    Bad battery life is a common problem after jail breaking or updating phone software. One of the first things you should do is to calibrate the battery. I noticed my battery life decreased after jail breaking. I did a calibration last night and I'm at 88% at 4:22pm. I have not charged the phone since morning.

    1. Let the battery drain completely until the phone shuts itself off.

    2. Let the phone stay dead for at least 5 hours.

    3. Fully charge the phone without interruption. I recommend manually shutting off the phone while its plugged in for fastest charge. Do not unplug the phone at any point during the charge process.

    4. Hard reboot the phone by simultaneously holding HOME and POWER buttons until the apple logo comes up.
     
  2. Ishimaru macrumors 6502a

    Joined:
    Jun 18, 2009
    Location:
    Los Angeles
    #2
    Or you can do what Apple recommends and just drain it to 0% once a month.
     
  3. NovemberWhiskey macrumors 68030

    NovemberWhiskey

    Joined:
    May 18, 2009
    #3
    I agree a battery calibration can help, but I have no idea why you would need to:

    1. Drain until the phone dies. You can take it down to 1% and it will accomplish the same thing. If anything, I've heard that letting the phone die is bad for the battery.

    2. Leave the phone dead for 5 hours. Again, this really doesn't accomplish anything. If you want to make the phone die, fine. But leaving it dead for 5 hours? I don't see the point.

    3. The hard reboot. How is this supposed to help?

    I've calibrated just by bringing it down to 1% and recharging to 100%+. Perfectly calibrated.
     
  4. impulse462 Suspended

    impulse462

    Joined:
    Jun 3, 2009
    #4
    You sure about that? I've done that also, yet I've still ended up with uncalibrated batteries. I think letting it die is the key since both the software and the hardware "know" that the phone is dead.
     
  5. BumpyFlatline macrumors 68030

    BumpyFlatline

    Joined:
    Apr 11, 2012
    #5
    I think I'm on the same page. The key here is to get "dead" electrons moving again which haven't been moving recently which is why our battery shows a lower than advertised capacity. That's the idea behind letting it get so low because you force the phone to reach electrons which have been passed over since you are only using a portion of your battery on average.
     
  6. rak007 macrumors 6502a

    Joined:
    Oct 31, 2011
    #6
    I usually charge my phone as soon as it is below 20% and in red. I think I should stop this practice. Should I always let the phone run down till 0% dead or say only once a month or so.
    Rest of the time I can charge anytime at any percentage battery left ?
     
  7. BumpyFlatline macrumors 68030

    BumpyFlatline

    Joined:
    Apr 11, 2012
    #7
    I charge it frequently. I don't always wait until it reaches that point. I'll charge it when it hits 50 or 60 or 45. Really anything other than when it's between 80-100. I've read it's good to charge it in this manner. Randomly I guess is how to describe it. My battery is as good as ever. Not much capacity loss over the last year or so I've had this device.
     
  8. headcase macrumors 6502

    headcase

    Joined:
    Jul 4, 2007
    Location:
    Raleigh, NC
    #8
    All batteries lose capacity for every discharge cycle, so I tend to plug it in when possible anyhow.
     
  9. rak007 macrumors 6502a

    Joined:
    Oct 31, 2011
    #9
    True that. Mine is iPhone 4S and as per the BatteryInfoLite app, its cyclecount is around 179 (does this mean i recharged 179 times till 100% ?)
    and my max capacity is showing as 1371 mAh while the Design Capacity is 1430 mAh.
    My wife has an iPhone 4 which has a cycle count of 550+ and for her the ax capacity is quite less than mine but that is kind of expected due to so many charge cycles.

    Not sure how accurate these battery monitoring apps are.
     
  10. headcase macrumors 6502

    headcase

    Joined:
    Jul 4, 2007
    Location:
    Raleigh, NC
    #10
    No, your cyclecount is the number of discharge cycles you've used up since you bought it. And given most batteries tend to last around 500+ cycles, the closer you get to 500, the lower the max capacity vs. what the original design capacity was.
     
  11. Sparky9292 macrumors 6502a

    Joined:
    Aug 1, 2004
    #11
    link? Sorry, there's just so much chicken-waving-voodoo-magic about smartphone battery life that I'd like to see an official Apple statement.
     
  12. lucasfer899 macrumors 6502

    lucasfer899

    Joined:
    Sep 23, 2012
    Location:
    London
    #12
    ahhahaha, "chicken-waving-voodoo-magic", but I too would like to see an official statement.
     
  13. TM WAZZA macrumors 68000

    Joined:
    Sep 18, 2010
    Location:
    Hamilton, New Zealand
    #13
    [​IMG]

    ----------

    Herpa Derp

    Look at the bottom

    http://www.apple.com/nz/batteries/iphone.html

     
  14. oplix thread starter Suspended

    oplix

    Joined:
    Jun 29, 2008
    Location:
    New York, NY
    #14
    it's not a process you manage in the day time. you let it run dry before you go to bed and then leave it dead over night. when u wake up, take it dead to work and then charge it to 100% there.
     

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