From FC EXPO - Sony Showcases Fuel Cell-powered Speaker, Chargers. Sony Corp exhibited a cordless speaker system and mobile phone chargers powered by its direct methanol fuel cells (DMFC) at the International Hydrogen & Fuel Cell Expo (FC Expo 2009) taking place from Feb 25 to 27. They all employed unique designs, containing fuel methanol in a see-through tank. Sony used a Li-ion secondary battery to compensate for the low outputs of small DMFCs, allowing mobile devices to cope with steep current peaks.The mobile device chargers, on the other hand, are charged via USB connection. Sony presented two chargers this time.
One is equipped with a 10cc methanol tank, (Looks like an AM radio from the 50's) which is equivalent to a power capacity of 13.7Wh when combined with a 3.7Wh Li-ion battery. It can charge a 3.4 to 4Wh mobile phone a few times a week. The other comes with a 100cc methanol tank and allows 25 power charges through each of its two USB ports for about a month.More at Tech-On
