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Macbook pro battery charge problem


berry

Active Member
#1
Just got a replacement battery for the laptop and after draining it to 3% and fully charging it, as specified.
But now it is stuck on 40% and it has taken me nearly 24 hours to get it to 58%
At this rate it will be fully charged by Easter.

Any clues what could do?

I'm going to drain the battery to 3% and see if it will recharge from that again.
 
#2
Hmm just been researching this issue. Not using Snow Leopard by any chance are you?

Lots and lots of issues ont' net about this. My battery is showing 808mAh/14% after only 158 load cycles, and it even runs out of juice sleeping overnight, fully charged! Apparently Li-Ion batteries don't benefit from being drained completely and fully charged, even though Apple recommend this for the system to calibrate the capacity. The cells' optimum capacity is 40%, but I don't know how you're supposed to excerise the cells while keeping to the 40% rule!

I've done the calibration thing, trashed the energy-saving prefs, reset to default energy settings to no avail. I have just bought a new compatible (5800mAh, £55 posted) to see how that fairs. It's time new battery material was developed, it's crazy those heavy batteries only last 3 hours when new.