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22 weeks in, 87% capacity

Michael Goff

Michael Goff

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Original poster
Jul 5, 2012
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So, according to coconutBattery, I've had this thing for 22 weeks. Like the title says, the battery can now hold 87% of design capacity.

Is this normal, or is there something wrong with the battery?

Yes, this is my main computer.
 
GGJstudios

GGJstudios

macrumors Westmere
May 16, 2008
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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. For further details, read the CHECKING STATUS AND HEALTH section of the following link.

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.
 
Michael Goff

Michael Goff

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Jul 5, 2012
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It says 90 cycles and 87% health on iStats and 86% on coconutBattery.

The built-in battery of the MacBook Air is designed to retain up to 80% of its original capacity at up to 750 full charge and discharge cycles.
Click to expand...

Am I doing something wrong?
 
GGJstudios

GGJstudios

macrumors Westmere
May 16, 2008
44,545
943
Michael Goff said:
It says 90 cycles and 87% health on iStats and 86% on coconutBattery.
Click to expand...
The 750 cycles is for earlier models. For newer notebooks, it's 1000 cycles. As I said, it will fluctuate up and down over time. It's not a straight decline. Don't worry about it unless it drops below 80% before 1000 cycles. If it does, take it to Apple and let them check to see if it's defective. They usually won't even check unless it's below 80%.
 
Michael Goff

Michael Goff

Suspended
Original poster
Jul 5, 2012
13,329
7,421
GGJstudios said:
The 750 cycles is for earlier models. For newer notebooks, it's 1000 cycles. As I said, it will fluctuate up and down over time. It's not a straight decline. Don't worry about it unless it drops below 80% before 1000 cycles. If it does, take it to Apple and let them check to see if it's defective. They usually won't even check unless it's below 80%.
Click to expand...

Maybe you're right.

I'm just a little paranoid about my 2200$ purchase.

I hope you understand.
 
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