Hi there, I've had a quick look through the archives, but can't see anything that exctly answers this (but I did only look quickly). I'm interested in how quickly your MBP battery drains when it's in sleep mode. My battery is down to 75% health after 120 cycles, and overnight it's lost 15% of its charge whilst in hibernate mode - that's hibernate, not the normal sleep mode. I've beden using the machine for about 5 minutes this morning, and it's lost about 5% - all I'm doing is running a web browser, mail client and a couple of terminal windows, I have a DVD-ROM mounted but it's not being accessed. Are these times normal? Or is my battery starting to 'go'? It's only about 8 months old so I thought it would last longer than this. Have already calibrated the battery, but that doesn't seem to help. Thanks, Mark.