I was wondering about that too. Apparently, there is a separate $250 "hydrolyser" that requires an AC outlet to recharge the hydrogen cartridges and it takes about an hour for each. But they seem to have good shelf life, so you could keep a few in reserve.

I like the 2 amp charging capability and the reusable cells. I don't like the extra $250 piece of equipment to charge the cells.

Right now, I am not seeing how this would trump my current Goal Zero setup.