Note: Processing time can take between 1-3 business days. Delivery between 3-5 business days. Features Automatically detects 12V or 24V DC system voltages. Compatible with various deep cycle battery options: Sealed, Gel, Flooded, and Lithium. Innovative MPPT technology with high tracking efficiency up to 99% and peak conversion efficiency of 98%. Electronic protection against reverse polarity, overcharging, over-discharging, overload, short-circuiting, and reverse current. LCD screen and multiple LED indicators for displaying system operation information, customizable parameters, and error codes. Features diverse load control; also capable of charging over-discharged lithium batteries. Die-cast aluminum design allows for efficient heat dissipation. RS232 port to communicate with BT-1 Bluetooth module. Specifications Rated Battery Current: 40A Rated Load Current: 20A Max. PV Input Short Current: 50A Max. Battery Voltage: 32V Max Solar Input Voltage: 100VDC Charge circuit voltage drop: ≤ 0.26V Discharge Circuit Voltage drop: ≤ 0.15V Working Temperature: -35°C to +45°C Max Terminal Size: 8AWG Rated Load Current: 10% to 90% NC Overall Dimension: 9.37 x 6.81 x 2.85 in Net Weight: 4.41 lb Download The User Manual Here Solar Charge Controller Comparison Rated Battery Current: 20A 40A 60A Rated Load Current: 20A 20A 20A Max. PV Input Short Current: 25A 50A 75A Max Battery Voltage: 32V 32V 32V Max Solar Input Voltage: 100 VDC 100 VDC 150 VDC Net Weight: 3.08 lb 4.41 lb 7.9 lb Discharge Circuit Voltage Drop: ≤0.15V ≤0.15V ≤0.15V Overall Dimension: 8.27 x 5.94 x 2.34in 9.37 x 6.81 x 2.85 in 11.2 x 8.1 x 4.0 in