More information about the Underscore mailing list

[_] correct treatment of laptop batteries

mike karthauser mikek at
Sat Dec 19 10:52:45 GMT 2009

having just had the job of replacing a mbp battery that lasted not much over 300 charges, i am keen to know the correct behaviour for battery charging to ensure a long life.

i've usually cycled a new battery for a number of charges and then tend to leave the power in at work so the battery remains fully charged so its good to last when i'm on the move.

the genius at apple store suggested leaving on power was bad for a battery and that it should be fully charged and then run off the battery till its flat and then recharged. This sounds a bit odd seeing as the battery is lithium. any expert views i can follow?

Mike Karthäuser
Managing Director - Brightstorm Ltd 
Email: mikek at 
Tel: 07939 252144
Address: 1 Brewery Court, North Street, Bristol, BS3 1JS