I downloaded Coconut battery and, well .... i think its making me a bit paranoid. I check maybe once a week to see whats going on with the capacity, and the last time i checked it was down to 84%. (I have a MBP bought in July 2006 ... 2Ghz CD 1Ghz RAM 15") So, i run the battery down to emergency sleep, plug the power cable in, turn the MBP off and let it charge fully. Then i turn it back on after 4/5 hours, battery is 100% charged at 97% capacity. I leave it a couple of days, check the capacity and its at 88%. So for about a week now iv been trying to get my MBP battery to have better capacity ... but no matter what i do the capacity fluctuates. Its back down to 84%. Anyone got any ideas? Or is this normal?