Sunday Times 2
How to use a cup of tea to charge your phone
View(s):By Mark Prigg
A mobile phone charger that can be powered by either a cold beer or a hot coffee has been unveiled. The Epiphany One Puck, which doubles as a drinks coaster, connects to a phone with a USB cable. It has two sides, one red, one blue. Owners use the red side as a drinks coaster to place a hot drink on it, and the blue side as for a cooling drink such as a beer.It uses something called a Stirling engine to turn heat into energy. US company Epiphany Labs, based in New Castle, Pennsylvania, has built a working prototype and hopes to have it on the market early in 2014.’
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