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MBP 15' Battery discharges to 95%

R

rbmanian75

macrumors regular
Original poster
Hi,

MBP 15' mid 2010 battery discharges itself to 95% in 3 to 7 days and then charging again to reach 100%. The system is always connected to power source. Is this normal behavior with all the MBP's?
 
It shouldn't discharge at all when connected to the MagSafe power adapter. Check to make sure the connection at the MBP and the outlet are secure. Also, make sure you've calibrated your battery properly, so the readings are accurate.

This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ
 
It's normal:

http://support.apple.com/kb/TS1909

Apple allows the charge to drop to about 93% before charging it again. This is to prevent short charge cycles (as stated in the article).

The battery discharges slowly even whilst not being used. It's perfectly normal.
 
Last edited:
GGJstudios said:
It shouldn't discharge at all when connected to the MagSafe power adapter. Check to make sure the connection at the MBP and the outlet are secure. Also, make sure you've calibrated your battery properly, so the readings are accurate.

This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ
Click to expand...

I have not calibrated the battery. I am doing it now...
 
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