Genasun GVB-8-Li-54.2V-WP, 8 A (Input) 350 W Solar Panel, Waterproof Voltage Boosting MPPT Solar Charge Controller for 13S Lithium Batteries (eBikes)

As a electric bike tourer this little device help me get across my state using solar along the way when a plug in wasn't available. It small, light, and has no fan.

I am still working out the best way to mount the panels, but so far so good. A Genasun controller is the best and easiest way to add solar to an e-Bike. You must get the correct Genasun with the matching voltage for your battery size and type, it cannot be changed. The controller will electronically change whatever voltage and amps it recieves from the solar panel, or wind turbine. It will then output what the battery needs to charge. There are limits to max volts and amps though, just stay within the limits. Simple setup: Solar panels plugged into Genasun controller Genasun controller plugged into battery charge port