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R-Battery / electric device


Actually, there still remains some power in the
used batteries. This R-battery takes the form of
a D type battery into which used AA or AAA
batteries can embed. Then, by transforming
and collecting the remaining power in the used batteries, we can use the device again and again.


Jiangnan University

Jiangnan University
Wuxi, China


Jiangnan University

Jiangnan University
Wuxi, China

Shuo Wang, Hansen Wei, Ying Zhao