A Personal Wind Turbine For $500: The Air-X
by Justin Thomas, Virginia 
on 03.23.06
The Air-X is a small wind turbine designed to be used by home owners. It has recently been updated to reduce the noise of the blades, and they've added some microprocessor-based technology to improve battery charging. The manufacturers say this turbine can charge “any size battery bank from 25 to 25,000 amp hours or higher”. The internal charge controller periodically stops charging, reads the battery voltage, and decides on the spot whether to continue charging or stop completely. The result is longer battery life and no overcharging. It's available from Affordable Solar and Sundance Solar. :: Via Groovy Green
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