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LevMac

macrumors 6502
Original poster
Feb 23, 2008
413
2
QLD, Australia
Anyone know why the Charge would drop from 99% to 97% whilst still being plugged into the MagSafe adapter ? It was 99% the other day, I havent taken it off the charger since, and now its showing charge being 97%....
 

dahcheet

macrumors regular
Feb 7, 2008
221
0
Harrisburg, PA
Anyone know why the Charge would drop from 99% to 97% whilst still being plugged into the MagSafe adapter ? It was 99% the other day, I havent taken it off the charger since, and now its showing charge being 97%....

Like I said before, even when it's plugged in the battery still discharges a minimal amount of power. It's not hurting the battery, it's just what it does. After it hits a certain point (95 or 90%) it will start charging again to fill up to 100%. I recommend running off battery every now and then though just to keep those electrons moving.
 

Mhaddy

macrumors 6502
Oct 26, 2005
445
1
Canada
Oiy, this is getting annoying. My battery health has been upwards of 99%, then has inconsistently fluctuated 4%-5% and until last night, was holding steady around 95%. So I let the MBA sleep over night for 12 hours while unplugged and the battery health dropped 3% from 95%->92%. What the heck!

Also, I know the battery discharges a little bit over sleep, and I calculated in about 12 hours it dropped 400 mAh, that's about 33 mAh an hour. Can anyone test to see what they get?
 
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