Korean designers Pyeong Joo Goh, Jong Seung Choi and Ji Soo Hong has created the AtoD Rechargeable Battery that is so felixble to fit all battery slots, from AA to D. You can change the size of the AtoD simply by squeezing it. With this flexible battery, we don’t have to buy different sizes of batteries anymore.
Inside the AtoD, there is a 1.5Volt Nickel Hydroxide battery (same capacity as a AA battery). You can recharge the AtoD and reuse it.
