Thanko is hell bent on creating USB gadgets which would come in use not more than once in a year. Among them is is the USB mobile battery charger using which you can charge your mobile / MP3 player / PMP battery. It has two pins which you need to place on the battery contacts to deliver the juice. So when the battery is charging you cant use the gadget anyways and with the ever increasing cases of battery explosions I doubt if you would want to try something like this. Oh and it is useless for iPhone users anyways. Available in Japan only where a pair of these sells for 1480 Yen ($ 15).