2012 Air Battery Health

[MrGimper]

Just noticed that the battery health on my Air doesn't look too great.

Original max capacity 6700
Current max capacity ~6100

Percentage of max capacity ~91%

Cycle count 41.

Surely I shouldn't lose almost 10% after 41 cycles?

 

[GGJstudios]

It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time. The gradual decline is not in a straight line downward, and it may decline more rapidly at some times and slower at others. For further details, read the CHECKING STATUS AND HEALTH section of the following link.

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The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.

Apple Notebook Battery FAQ​

 

[DuganRun]

I've got 81% after 419 cycles, still gives me about 2.5 hours of use just as it did when new, I've always cycled the battery every 2 weeks.