> In brief, the author states that frequent full discharges should be > avoided and that LiIon batteries have a 2-3 year lifespan from date of > manufacture regardless of how well treated they are. A full discharge > to calibrate the Apple battery meter every 30 charges is OK. Yeah, I've read that, too. I don't usually get to the point of a full discharge more than once in a blue moon; say, if I leave the computer in sleep mode over a weekend with a low battery, and the battery drains *completely.* I usually charge it when it's down around 3-5%, I think. BRIAN/bpearce at cloud9.net <http://www.redjacketpress.com>