However, unlike a Macbook, you could own a few external batteries and swap between them. You'll probably also see aftermarket batteries for this pretty quickly with even more power.

I'm wondering if they're including a small battery on the headset for ~5mins of juice, just enough to swap batteries or from external power to AC power. It would be frustrating to have to shut down completely every 1.5 hours to recharge or swap packs.

Swap batteries with a click. Granted, I'm sure they'll cost $1,000.

Yeah, they probably won't be cheap. I wonder if swapping the battery would require turning the device off. Maybe they've put in a small internal battery to facilitate a swap.

This is version 1.0. I imagine down the road there will be larger batteries and greater power efficiency. But for desk workers using AR goggles for “laptop work,” you’re usually near a power outlet anyway.