Hydro Powered Calculator
Check out this eco-friendly calculator with a water powered battery!
The water-powered batteries consists of two electrodes made of special alloys, which, when immersed in water, produce electricity through a chemical reaction. Simply refill the battery as the water evaporates, typically every two to three months. Not only is this eco-friendly, it’s providing free energy. Well, not enough free energy to power your computer or drive you home, but it’s still impressive!$10.99 at Perpetual Kid. Click image to buy.
(image from perpetualkid.com)
(via healthfoodstalker)
