... of galvanized steelController12/24V 20A branded solar charge controllerBatteryGel deep cycle batteryWorking Time0~10 hours per night, 3~5 ... ~120lm/W. Germany solar controller, IP68 waterproof, protect battery charging & discharging.Multiple setting modes available: dusk to dawn ... , split night, full power, diming. Gel type sealed battery, long life with charging & discharging. No need maintenance. ...