Review on Efficient Solar Charging With 80A MPPT Charge Controller - Ideal For AGM, Sealed & Lithium Batteries by Elton Luo

Using this system to charge a 36V golf cart off grid and to produce 120 volts with the puresine invertor to charge model airplane batteries. 2, 350 watt Hyundai solar panels in series provide 72 volts. The solar controller is in a tight space inside a water proof box with custom vents on the top and bottom to direct the fan blast outside. I got a controller this big because of the safey features in case something is done wrong. At 9 amps the fan has yet to turn on. Working great so far. total system cost 1500