Review on ⚡️ AMPINVT MPPT Solar Charge Controller 12V 24V 36V 48V Battery System Auto, Max Input 150V PV Solar Regulator Negative Grounded (MPPT-60A): Efficient Solar Charging Controller for Multiple Voltage Levels by Brent Saake

Use this system to charge a 36 volt golf cart from the mains and generate 120 volts with a pure inverter to charge model airplane batteries. 2 350 watt Hyundai solar panels connected in series provide 72 volts. The solar controller is in a tight space in a waterproof housing with special ventilation openings at the top and bottom to direct the fan flow to the outside. I have such a large controller because of the safety features in case something goes wrong. At 9 amps the fan has not yet turned on. Works great so far. Total cost of the system 1500