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These disposable cardboard pieces actually charge your smartphone battery

Keeping your smartphone charged all through the day can be a feat – you’ve got to make sure it's at 100 per cent when you leave home, and depending on how fast its juice runs out, you’ve got to have a few charged power banks on you when you’re not close to a power socket.

If that sounds like you, there’s a new concept that’s going to lighten your burden. Designer, Tsung Chih-Hsien, has created a cardboard battery that gives you a couple of extra hours of talktime on your phone.

This Red Dot Design Award winning idea, named Mini Power, is basically just a battery capsule made of cardboard that you break off a perforated sheet and plug into your device – it’s said to kind of act like a vitamin for your smartphone.      

source:http://www.stuff.tv/sg/news/these-disposable-cardboard-pieces-actually-charge-your-smartphone-battery