Features 1、Possess true MPPT solar maximum power point tracking function, can make full use of solar charging. Automatic and intelligent charging management, low power consumption 2、Can charge 6V or 12 batteries, or 8.4V, 12.6V, 16.8V lithium batteries, 7.2V, 10.8V, 14.4V lithium iron phosphate batteries 3、Using ultra-low dropout design to achieve low power consumption and higher conversion efficiency, professionally adapted to solar panels 4、Fully automatic and intelligent three-stage charging mode, self-tracking solar power and automatic adjustment of charging current 5、Even the weak sunlight in the morning can be easily activated automatically, eliminating the need for manual switches 6、MOS tube ultra-low dropout protection against reverse connection, input reverse connection does not work 7、The MPPT voltage of different solar modules is different. The MPPT function can effectively prevent the solar panel voltage from being dragged by the battery and charging slowly 8、Output reverse current protection effectively prevents the battery's electric backflow charging board at night 9、Suitable for solar panels to charge batteries, nickel-cadmium, nickel-metal hydride, lithium batteries (battery packs), wind generators, solar street lights, etc. 10、Dual indication of charging status and charging end status (red light on when charging / blue light on when full / red light flashing and blue light always on means that the battery is not connected) Specification Item Type: Solar Charging Board Material: PCB, aluminum alloy Uses: 1W-100W 8V-28V, suitable for 9V 12V 18V 24V solar panels to charge batteries, nickel-cadmium, nickel-metal hydride, lithium batteries (battery packs), wind generators, solar street lights, etc. 2-4 string lithium batteries, lithium iron phosphate charging management board Output Current: 5A Charging Indicator: Yes (the red light will be on for fast charging, the red and blue lights will flash alternately when fully charged, and will stop automatically when fully charged) MPPT Function: Yes (MPPT maximum power point automatic tracking function, which can make full use of solar energy charging) Ultra-Low Power Consumption: Yes Working Temperature: Industrial grade (-40℃ to +85℃) Load Regulation Rate: ±1% Conversion Efficiency: Maximum: 93%, Peak: 95%, different lighting conditions are different Charging Method: Fully automatic and intelligent three-stage charging mode No-Load Current: 3mA Input Reverse Connection Protection: Yes Output Reverse Current Protection: Yes (effectively prevent the electric backflow charging board of the battery at night) Wiring Mode: With wiring terminal Debugging Method: Step 3: Connect the dead battery, and monitor the charging current with an ammeter on the output terminal, and fine-tune the MPPT potentiometer until the charging current is the maximum. The Method of Using a Regulated Power Supply Instead of Solar Energy: Package List 1 x Solar Charging Board