That's right.. the meaning of rechargeable battery is that you can recharge it anytime you want.. but what if you don't have the power outlet to recharge your rechargeable batteries?
Well here is a new designer who addresses the very same issue.. Now you can recharge your battery manually.
Just crank it up..
re-charge these cells via the conventional battery charger OR use the hand-crank to wind up and source-up some juice. Kinda like your hand-crank radios.
In the future battery storage capacity will grow and the standardization of the battery will continue for a long time. The wind-up design can also be used in the same way on AAA battery and so on.
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