Solar System Voltage Electrical PV Operating Voltage Rated Input Current Rated DC Load Current Self Consumption Protection 40A 40A 2W 97.5% PV array short circuit, over charging, battery reverse polarity, output short circuit Battery Charging Sealed Gel AGM Flooded Lithium Battery 4 stage: Bulk, Absorption, Float, Equalize charging Battery Type Charge Algorithm Bulk Charge Voltage Float Charge Voltage Equalize Charge Voltage Load Disconnect Voltage Load Reconnect Voltage Temperature Compensation Physical Net Weight Gross Weight Dimension(mm) Heatsink cooling Environment Ambient operating temperature Storage Temperature Humidity Warranty Technical data for 12V system at 25°C, twice in 24V system rate, triple in 36V system and quadruple in 48V system rate.