The Nature Power 8 Amp Charge Controller helps regulate the current and voltage going to the battery. It can handle up-to 130-watts of solar array and protects the battery from overcharging and high voltage surges. It's equipped with an easy-to-install plug and play connectors and has automatic cut-in and cut-out maintenance. Can be used with any 12 Volt Solar Panel system. Additional Features• Easy-to-read LED light indicators show battery 'charged" or battery "Charging"• Protects the battery from discharging with built-in diode Easy to install plug & play connectors Automatic cut-in & cut-out maintenance Maximum current input is 8 Amps