Description The solar charge controller is a device used to control the photovoltaic panel to charge the battery and provide load control voltage for voltage-sensitive equipment. Our product adopts an industrial-grade main control chip, automatic focus tracking charging, high charging efficiency, and can play a very good control role.Features-Color: Black, blue-Material: Plastic-Size: 19.00X9.50X4.00cm/7.47X3.73X1.57in-System voltage: 12V/24V adaptive.-Rated charging current: 30A | 50A | 100A-Rated discharge current: 10A | 20A | 30A-Maximum photovoltaic voltage: up to 23V for 12V batteries, up to 46V for 24V batteries.-Charging cut-off voltage value:B1: Lead-acid battery (14.2V)B2: Ternary lithium battery (12.2V)B3: lithium iron phosphate battery (14.6V)-Float charge voltage: 14.2 V (default, adjustable)-Discharge cut-off voltage: 10.7 V (default value, adjustable)-Discharge recovery voltage: 12.6 V (default, adjustable)-Standby current: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.