GoPower! 80-480W 30A Battery Charger Controller for Solar 12 Volt GP-PWM-30 19-6858

It is used with solar 12 Volt battery chargers. Its operating range is 6 to 15.5 Volt. It measures 7-1/2 inch width x 4-1/4 inch height x 1.38 inch depth. The digital display shows the battery voltage, charging current & battery state of charge. Expandable capability can handle 4 to 5 solar panels with a capacity up to 490 Watt or 30 Amp.