That's why long term Magic Leap's hip-worn battery/processor and Apple's likely to be iPhone connected to glasses solution will trump the all-in-one Hololens style design.
Very good point. But even iPhones can't do HD 60fps video + bluetooth for too long. I guess if it's just used to send AR text and tiny UI that could last longer.
Speculation but it would be interesting if the rumored over ear headphones contained additional power that could be routed to the glasses/phone. It’s another place with space that could contribute.