Evaluating Battery Condition
Batteries are evaluated on two objective measures: their full charge capacity and condition.
POOR: 0-2000 mAh OR the battery states Service Battery or Replace Now
FAIR: 2000-4000 mAh OR the battery states Replace Soon or Check Battery
GOOD: 4000-11000 mAh AND the battery states Normal
* Bulging: If a battery is missing or bulging it will need to be replaced and should be marked as POOR.
Finding Battery Info
Click on the Apple icon in the top left corner of the screen and select About This Mac
From the menu that pops up, select More Info
IF 10.6, (Snow Leopard) skip step 3. IF 10.7 (Lion) select System Report
Click on Power and the full charge capacity and condition information will be displayed in the right window.