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One common scene is that someones battery of his mobile phone has run out of power, yet it will take him a few hours to get the access to his charger. Battery Notes helps fix this embarrassing problem by the technology of paper battery. Each piece of note is able to produce a certain amount of electricity. We may simply put one piece or two of the notes on the back of our mobile phone to go on supplying some power when it has got a dead battery. After the battery notes are completely used up, they can still be used as paper notes where we can leave messages.
Wenting Guo, Qianying Hu, Ning Zhao, Wenchao Shi