I'm selling my white Macbook and currently using my FIs early '08 MBP while he is at work. Yesterday the battery power dropped very suddenly and now battery health is only 44% with 345 cycles. The other day (according to iStat Pro) the battery health was 84% with 340 cycles. My FI is convinced that I did something to cause this and is threatening to not let me use the computer. I definitely have not done anything out of the ordinary... just web surfing, email, watching stuff on hulu, and iChat. On the apple support site a few others have seen a similar battery power drop, but most of them saw it after updating to Snow Leopard. We are going to the Apple store a few hours away next week to get it looked at, but in the meantime I need to gather evidence that this is NOT my fault so he will stop freaking out that I am killing his computer. Has anyone else experienced this sudden drop in battery power in their early '08 MBP lately?