Solar Charge Controller Maximum Current 40 A Maximum Solar Input Voltage 100 V DC Maximum Battery Charging Voltage 35 V DC Battery Type AGM Flooded Lead Acid Gel Cell Lithium-Ion IP Rating IP32 Maximum Operating Temperature 113 Degrees F Minimum Operating Temperature -31 Degrees F Overall Depth 9.7 in Overall Height 3.3 in Overall Width 7.1 in Interface Bluetooth RS485 No-Load Loss 10 mA @ 24V 12 mA @ 12V Compatible with Brand Grape Solar