batteries

Printable batteries

Printable batteries

A research team at the Fraunhofer Research Institution for Electronic Nano Systems (ENAS) in Chemnitz, Germany, led by Prof. Dr. Reinhard Baumann, have developed a 1.5V battery that weighs less than a gram, is less than 1mm thick, and can be printed using a process similar to that used in silk screening. The new type […]

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How-To:  Simple metal-air battery

How-To: Simple metal-air battery

Here’s a nice demonstration of an aluminum-air battery which produces 1.0 V and 100 mA from the oxidation of aluminum foil. Metal-air cells such as this find common application in hearing aid batteries, for instance, which are driven by the oxidation of zinc. More: How-To: Backyard battery The Supercap battery

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Making solar-powered batteries

Making solar-powered batteries

Norwegian maker Knut Karlsen got some flexible solar material and decide to try his hand at prototyping solar-powered batteries. He wrapped the cells around some NiMH rechargeables he had on hand and wired them up. He writes: This setup is in fact a (quite weak) trickle charger. It is not ideal, but really convenient. A […]

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