Is it normal for my battery percentage to go down from 100% to 99% immediately?

Discussion in 'iPad' started by KingMo, Dec 26, 2010.

  1. KingMo macrumors member

    Joined:
    May 27, 2010
    #1
    I have been having a few problems regarding the battery life on my new iPad.

    Firstly, When I charge it, it reaches about 96% then the sign changes from the "charging state" (the lightning bolt) to the charged state (the plug symbol)...However, it keeps charging. (The numbers keep increasing.)

    Secondly, as soon as I unplug my iPad from the charger, the percentage decreases from 100% to 99%. Is this normal?

    And thirdly, the battery life decreases rather fast...like in 5 to 10 minutes, one percentage is lost and only one app is open. (IM Pro).

    Can someone help me with my problems here?
     
  2. 3583582 Suspended

    Joined:
    Jan 6, 2009
    #2
    Average 7.5 minutes.

    7.5 x 100= 750

    750/60 = 12.5

    So, that's 12.5 hours battery life with very light usage. Seems about right..
     
  3. KingMo thread starter macrumors member

    Joined:
    May 27, 2010
    #3
    Oh ok...thanks for breaking it down for me. But what about the issue where my battery life decreases the second I unplug my charger?
     
  4. forcetactic macrumors 6502

    Joined:
    Jul 30, 2010
    #4
    Battery life is not linear so you cannot just take the duration of 1% and multiply by 100. Sometimes I have 75% turn off and on, and I have 77% etc. There is no way of precisely measuring
     
  5. Samslice12 macrumors member

    Joined:
    Jan 20, 2008
    Location:
    Australia
    #5
    I think this is pretty normal. Think about it logically, you're battery can never be at 100% unless it is plugged in. The second you unplug it, it's going to discharge even a tiny amount and then it is no longer at 100%, might be 99.8%. Considering it only shows whole numbers, it must round down to 99%?
     
  6. Stealthipad macrumors 68040

    Stealthipad

    Joined:
    Apr 30, 2010
    #6
    Unless you just relax you will not enjoy your new toy!

    Just use it like there is no tomorrow.
     
  7. sapporobaby macrumors 68000

    sapporobaby

    Joined:
    Sep 27, 2007
    Location:
    3 earth minutes from your location....
    #7
    Thank you for providing one of the best darned answers I've seen in a long time on this forum.
     
  8. KingMo thread starter macrumors member

    Joined:
    May 27, 2010
    #8
    I'm definitely enjoying it...I just intend to get my money's worth when I spent all of this money on a product. But trust me, I'm enjoying it the most I can.
     
  9. wwchris, Dec 27, 2010
    Last edited: Dec 27, 2010

    wwchris macrumors regular

    Joined:
    Nov 13, 2009
    Location:
    Atlanta, GA
    #9
    Many times battery issues can be addressed by doing a hard reboot. Just hold down the power and home buttons at the same time for about 5 seconds until it turns off on its own, then turn it back on. It will take a little longer to reboot this way, just give it a minute.

    This is not "slide to turn off", keep holding them until it just turns off on its own to a black screen.
     
  10. MaxBurn macrumors 65816

    MaxBurn

    Joined:
    Nov 25, 2010
    #10
    true but they are normalizing the discharge curve and it even has a little learning component hence the advice off and on here let it see a full discharge under 20% to read accurately.
     
  11. AppleGoddess macrumors 6502a

    AppleGoddess

    Joined:
    Sep 30, 2010
    #11
    I had 3 iPads so far, one took a very long time to move from 100% the other jumped down in a minute, so it does vary.
     
  12. Stealthipad macrumors 68040

    Stealthipad

    Joined:
    Apr 30, 2010
    #12
    Glad you found it dandy!:eek:

    It is so much better than "As someone pointed out, this has been mentioned over and over and over."

    LOL!
     

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