If that’s a little too wonky, let’s put it this way. You remember the hydrogen reactor that blew up a city block in the 1990s Keanu Reeves/Morgan Freeman cinema classic Chain Reaction, yes? Well, that’s what’s powering your phone. It’s just $150, due in October, and comes in handy during camping trips or extended power outages (with conveniently portable individual cartridges selling for $15, and four-packs priced at $50). Plus, you get to brag to friends that you have a hydrogen reactor that can fit in your pocket.