80 Watt Folding Solar Panel – Dokio – $100!! Charging my Car!

So i  got the 80 watt solar panel so i can charge my 12v battery in my car and van.  Its pretty cool that it has a USB inverter.  Well the instructions are cryptic, but the solar charge controller

80 Watt Folding Solar Panel I bought it on amazon: http://amzn.to/2Ed7yLZ 

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