Type: Solar Charge Controller Output Current: 7A Dimensions: 7 5/8" x 4 5/8" x 2 1/4" Weight: 0.35 lbs. Features: Maintenance free protection for your batteries and solar panels. Prevents Overcharging 12V Batteries: Protect Battery from Overcharge and Discharge For Use with 12 Volt Solar Panels and Batteries Only Handles up to 7 Amps of Array Current Handles up to 105 Watts of Solar Power Maintenance Free Protection of Your Solar Panel and Batteries Maintains Battery Voltage Maintain 12V Batteries in a Fully Charged State. Operation: Yellow Charging Light Indicates Battery Charging Green Light Indicates Full Battery. Installation: Connect the Solar Panel Terminals to the Solar Controller Terminals Connect the Solar Controller 0-Rings to the Battery Terminals.