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why my Mac book air doesn't charge straight away

329 Views 1 Reply Latest reply: Jun 28, 2012 10:32 AM by SP Forsythe RSS
daurban Calculating status...
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Jun 27, 2012 11:43 PM

Hi there, Are any people know why is my Mac book air doesn't charge straight away? Thanks!

MacBook Air (11-INCH, MID 2011)
  • SP Forsythe Level 5 Level 5 (5,200 points)
    Currently Being Moderated
    Jun 28, 2012 10:32 AM (in response to daurban)

    Can you clarify that?

     

    I mean, I think it quite normal for the computer to take a second or two before charging begins. It could be the SMC making a determination whether charging is necessary, such that overcharging or "topping off" does not occur.

     

    You should also know that if your battery is already at 95% or higher when you connect the charging adapter, the battery will not charge further. The battery must dip below 95%, for it to begin. This is to prevent "topping off", to minimize cycling, which is detrimental to battery longevity.

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