this is a very cool technology. and it cracked me up.

Canister lets you add water (or bodily fluids) to recharge batteries

Adding water (or even urine) to a new cartridge, SiGNa's mobile-H2™, produces hydrogen that a fuel cell device can use to charge batteries. We take a look at the chemistry behind the cartridges and speak with SiGNa's CEO Michael Lefenfeld about the technology.