Features: 1.Adopting photoresistorless light control technology 2.Charge during the day and light up automatically at night 3.Charging input using 5(A)charging diode 4.Output using 4(A) CMOS field effect tubes 5.Support lithium batteries,lithium iron phosphate batteries,lead-acid batteries 6.Output with 1.1(A) self-recovery fuse for overcurrent protection 7.Compact circuit board size:25*15mm For solar lawn lamps,solar string lights,solar wall lamps And other solar power for charging and photosensitive control Specification: Applicable battery voltage:3.7V-24V Solar Panel Input Voltage:Battery Voltage*1.5=Solar Panel Voltage Maximum input current:<3A Maximum output current:<1.5A Control mode:light control (After connecting the solar panel The light will not be on during the daytime (It will light up automatically when it is dark) Size:25*15mm Widely used in solar lawn lamps, solar post lamps,solar landscape decorative lamps Solar wall lamps and other small power solar products control Package Included: 1*3.7V solar circuit board Note: 1.The output of this circuit board cannot be connected with all kinds of boosting circuits 2.Cannot use LED beads directly,need to connect the buck driver(or series suitable resistor to limit current) (Or series with a suitable resistor to limit the current) 3.The battery must be equipped with a protection board Otherwise it will be damaged by overcharging or over-discharging 4. Please connect the battery first,then the LEDs Finally connect the solar panel