I've had my new 2012 MacBook Air for about four days now. I've used it quite a few times to play Counter Strike Source, without the unit plugged in. I've accumulated 6 cycles. My battery health was 97.6% last night and is now 96%. I've done the research and this is apparently normal. My understanding is that battery health is never 100% from the factory, and it takes some use to find where it's really at, and then stay there. Is this correct? While playing a game should I keep the Air plugged in? My understanding is that when the unit is fully charged and plugged in it does not run off the battery, but the AC. I see myself keeping it plugged in for games, and regularly cycling it when I'm doing light tasks. Does this sound like a good strategy for preserving the battery?