Fuel cell and other alternative charging technologies continue to advance; NTT DoCoMo is showing off a new power prototype starting tomorrow at the Wireless Japan 2006 show. The polymer electrolyte fuel cell (PEFC) unit uses water that is converted to hydrogen to produce up to 2 watts of power. Although the fuel cell is much smaller than the one DoCoMo touted last year, it’s still not small enough to act as an internal phone battery. Instead, this device is a charger for the company’s 3G FOMA phones and can charge a phone as quickly as an AC charger. The prototype is good for up to three charges; if you want to see the more technical aspects of this 45 gram charger, NTT DoCoMo has a one page Adobe PDF that provides an easy to understand overview.
(via Phone Scoop)