Four Asian designers presented a new universal look on batteries; combining USB plug with normal triple-A batteries. The name given to this innovation is Continuance.
Using USB plug batteries may be used for their direct reason - to power other devices, such as: flash lights, alarm clock, phones, etc. Placing a USB plug into a battery makes each unit very expensive to acquire so Continuance designers decided to make these batteries rechargeable. This is amazing solution will save customers money with only down-side is that each Continuance owner will have to carry a USB cable for his device specifically.