[clevin]

after 18 months, mine only last 1.5 hours now, somebody told me there is a replacement program for rev A MB battery up to two years old. But when I call apple, their rep told me 1.5 hours battery is "acceptable"

do you guys experience any MB battery problem? what is the battery life for your MB after one year?

[tinkered]

How often do you use your battery? I get ~2.5 years out of a battery. My GF gets <1 year because the plug is only used when the computer is not being used.

[Simon]

Battery time is a very bad measure for the health of your battery because it depends on so many other things.

In order to determine in what shape your battery is you need to know the cycle count and the full charge capacity in mAh. You'll find both in Sys Profiler > Hardware > Power. Apple claims their notebook batteries should retain 80% of the full charge capacity within the first 300 cycles. IIRC a brand new MB battery has a capacity of roughly 5Ah.

[nickw311]

At 384 cycles and 1.5 years, mine lasts about an hour.

[Eug]

Can't tell you. I'm on my 3rd battery. The first two just stopped working completely.