Common sense would say there must be an internal battery, but Marco Arment was at WWDC and was specifically told there's no internal reserve. https://atp.fm/53

Common sense would say there must be an internal battery, but Marco Arment was at WWDC and was specifically told there's no internal reserve. https://atp.fm/538 https://atp.fm/538 at 3 hours 16 minutes I haven't been able to find a first-hand source stating otherwise.