I charged my Apple Air (11-inch) up last night from 8% battery life and left it off all night (not on standby), and plugged in. This morning I went to check on it. It's on its 12th charge cycle. It's reading 99% battery life, and 99% battery health as well. Speaking about the battery health: Is it normal to lose 1% battery health after only 12 charge cycles? If it were linear, then I'd be at 80% battery health after only 240 cycles. Is battery health loss much quicker at the start, and slows down around the 90% health mark or something? Speaking about the battery life: Is it normal to lose 1% battery life over the period of 12 hours keeping the unit off? That would mean 60% battery life lost over 30 days.