Fuel cell technology is another alternative you may have heard and guess what, it looks like mobile phones will have one as well soon. This was after a Japanese company named Aquafairy unveiled the AF-M3000 mutli-power supply for mobile devices just recently.
The AF-M3000 is a pocket-sized charger which can charge an iPhone 4 for up to 50% capacity inside 30 minutes with a single fuel cell. While that may seem cool, the price may not necessarily be so. It costs a rough 26,250 YEN or about $316 and come with a pack of 5 fuel cells 2625 Yen ($ 13). Regardless if you want this one and know anyone who is or is in Japan, it will be out by next month.