My sister has a white Macbook she bought in August 2008 that she says is not holding a charge like it used to. I had her look her look up her battery status, it said the max capacity was 4593 mAh on 207 cycles with a rating of good. Ive read that Apple will warranty a battery if it has less than 80% of its original capacity at or before 300 cycles.
From what Ive read her original capacity should have been 5400 mAh, so it would seem she could conceivably break through the 80% threshold before hitting 300 cycles. Am I on track at least with this thinking?