Ok, so on the first charge, the Air 2 was noticeably poorer compared to my Air 1 with regards to battery life. After draining down to 3% and then charging overnight, I have been testing this morning. With back light around 30% and only reading websites in Safari for around 2 hours, my battery life has dropped to 75%. On the original Air that is a year old, I would be no less than 85% with the exact same usage, probably nearer 90%. I have real concerns over battery life unless iOS 8.1 has had a real hit on performance. Also, when checking battery usage, standby and usage figures are exactly the same so it seems something is always consuming resources. Anyone else in the same boat? I'm living the Air 2 otherwise but battery life has me considering going back to the original Air.