We first laid our eyes and hands on Horizon's MiniPak personal fuel cell charger back at CES and now it's finally available for purchase. Designed for charging portable electronics on the go, the MiniPak has two refillable cartridges, each with the juice equivalent of around 1,000 AA batteries. The MiniPak -- which uses Hydrogen to produce electricity -- isn't the first portable fuel cell, but it's certainly the cheapest. Check out our demo video from CES 2010 after the break. You can hit the source link if you're looking for a $99 fuel cell for your very own.