We know that Sanyo’s collection of rechargeable Eneloop batteries do come with various external cases that automatically changes the size of the current battery to accomodate a wide variety of devices, and this concept plays on pretty much the same theme. Dubbed the AtoD Rechargeable Battery for obvious reasons, you don’t have to worry about getting the wrong size ever again simply because one size fits all slots, thanks to the memory foam material it is made off. We do wonder whether this will actually hit the market in due time or not, and what sort of cultural impact will it have in the long run.