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Battery stops at 99% when full?

AppleFanatic10

AppleFanatic10

macrumors 68030
Original poster
Nov 2, 2010
2,847
343
Hawthorne, CA
Hello everyone,

I just bought my macbook last week from the refurbished Apple Online store, and received it on Saturday from FedEx. I have noticed that the battery only charges to 99% after only 6 charges. It also drops immediately from 99% to 98% as soon as I take the charger out. I have the brightness in the middle so it won't be too bright and too dark, the only things open are Safari and iChat right now. Is that normal? The battery does last its full 8-10 hours though, just checking to see if all this is normal. Thanks guys.
 

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It's completely normal

It is also normal that your battery may not charge to 100%. The battery may appear to stop charging between 93 percent and 99 percent, because the batteries are designed to avoid short discharge/charge cycles in order to prolong the overall life of the battery. When it reaches a full charge, the light on your MagSafe adapter will turn green. This indicates that it has stopped charging your battery and you are now running on A/C power with a fully charged battery. It will not overcharge your battery. It's also perfectly safe to let your Mac notebook sleep with A/C plugged in.
Click to expand...

https://forums.macrumors.com/posts/9875442/
 
It probably went all the way to 100% but you didn't notice it. Once it hits 100%, if you leave your computer connected to power, the battery will slowly drop 1 percent to 95 percent and then charge itself back to 100 again.
 
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