How do I recalibrate my Battery?

mkrishnan

Moderator emeritus
Jan 9, 2004
29,777
12
Grand Rapids, MI, USA
I didn't realize the procedure had changed for the newer models... good to know. It's interesting that you really have to kill the battery to get it to calibrate on those.
 

Collin973

macrumors 6502
Original poster
Mar 29, 2006
259
0
EricNau said:
No, it's not a program.

Which notebook do you have?

EDIT: Here's a support article that describes how to do it on both types of Apple notebooks. :)

Thanks. My tibooks battery has been draining super quick today. Like it last only an hour or so and then it's done. It wasn't like that before.
 

mkrishnan

Moderator emeritus
Jan 9, 2004
29,777
12
Grand Rapids, MI, USA
Collin973 said:
Thanks. My tibooks battery has been draining super quick today. Like it last only an hour or so and then it's done. It wasn't like that before.
How old is your battery? Hopefully a calibration will help, but it does have a finite lifespan. After you calibrate and recharge, open Apple Menu -> About This Mac -> More info and then click on the power entry. You'll see a max charge capacity number. That number is in mAh. You can find the original rating of your battery (probably about 4000?) online and see what the current capacity is by dividing the current number by the original number....