What you see here are the Continuance batteries that is actually an iF concept design entry for this year, although we’ve seen such real life batteries before (albeit not in the exact format of charging). The Continuance will seek out an empty USB port, since it has a USB interface on the side that allows you to connect it to a USB cable and power the insides directly whenever it runs low on juice. Since USB ports are dime a dozen these days, something like this makes perfect sense, but not many people are quick on the uptake after all – perhaps it isn’t really that essential, and the fact that Sanyo Eneloops are so long lasting doesn’t help its case, either.