DIY Friday: Solar Bike & Scooter


Here’s a project that’ll keep you rocket scientists busy: a solar-power-assisted bicycle (and scooter, for the kids). Via Earth Techling

Weighing around 50 pounds, the KPV features two options for recharging its LiFePO4 main battery pack. One option is connecting to mains electricity via the onboard AC-DC power supply, while the other is an emissions free method making use of 14 6″x6″ mono crystalline solar cells wired in a series, the output of which is controlled via a group of dpdt rocker switches. It is noted by Hope that one can direct “the output to charge any two batteries/capacitors from either the main 24 volt battery pack, 12 volt battery booster pack or 10.8 volt capacitor bank. The two extra electrical energy storage packs have been added for extended range functionality.”

A video from last fall demonstrates the power of the sun…


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