Features:1. Made of high quality material, durable and long service life.2. This is a compatibel MPPT charge controller PWM intelligent/efficient/energy saving, it has efficient MPPT controller charging function to automotically track the maximum power point,10%-30% higher than the ordinary controller charging efficiency3. The LCD screen display can provide clear reading.4. The controller has battery undervoltage protecting function. 5. This controller has standby energy saving,more than 30% energy than ordinary controller,the standby power consumption of only 10mA-15mASpecification:Condition: 100% Brand NewModel: MPPT L-80Maximum Power Current: 80AInstallation (mm2): 20mm2Installation Line (AWG): 2# (AWG)Peaking Power of Solar Panels (Max Wp): 1000WBattery Capacity Configuration: 800AhBattery Floating Voltage: 13.8V (12V System) / 27.6V (24V System)Battery (Undervoltage) Protecting: 10.6V (12V System) / 21.2V (24V System)Battery (Undervoltage) Recovery Voltage: 12.6V (12V System) / 25.2V (24V System)System Load Loss: <= 13mA: Loop Buck; <=100mVWorking Temperature: -10 ~ 60Storage Temperature: -30 ~ -70Working Temperature: <= 90%, No CondensationTemperature Compensation: -4mv / Cell /The Maximum Open Circuit Voltage of Solar Panels: 18V~24V (12V System) 36V~48V (24V System)Solar Panel Maximum Open Circuit Voltage: <=48VSize: Approx. 188 * 128 * 61mm / 7.4 * 5 * 2.4in Weight: Approx. 731g / 25.8ozPackage List:1 * Controller1 * Temperature Probe1 * English User Manual