Is iPad battery life usage linear

Discussion in 'iPad' started by FederalSystems, Aug 10, 2010.

  1. FederalSystems macrumors newbie

    Aug 10, 2010
    I noticed a few different times now that it takes my iPad from a full charge of 100% about 45min to an hour of running before the battery life indicator starts to go down. So lets say that after using the iPad for 60 mins, I see that it's at 99% but then it goes down to 98% after using it for a whole less than 60 mins. I guess battery life is not linear and after an initial time at 100% it goes down more rapidly. So the question is - is this how all batteries are supposed to work? or is this some issue with the measurement, where the measurements are imprecise and it's really an approximate measure.
  2. Zazoh macrumors 6502a


    Jan 4, 2009
    San Antonio, Texas
    I think more important as the intervals between the percentages is the overall battery life.

    So, if i know for 3 days at 100% then it takes 1/2 a day to hit zero after that, I can go for 3.5 days.

    I do know on other Apple Devices they recommend calibration monthly. Google it. It is a process where once a month you run down to 0 and leave off for awhile before charging.

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