Hi I have a 2009 13" MBP under applecare. The battery has 339 cycles but the capacity is at 57%, meaning that is becoming close to useless for me. I get the 'service battery' message but have had that for a long time. I'm just curious if this would be covered under applecare? I remember reading somewhere that the battery is supposed to retain 80% capacity after 300 cycles, but what is normal after 300 cycles? It seems like capacity is diminishing very rapidly at this point and I have tried resetting PRAM and SMC to no effect. Thanks for any insight or advice about how I might be able to get apple to cover this under applecare before it runs out in the summer.