Features 1、The maximum power point tracking of solar cells, the output current is greater than the solar panel current, the real ultra-high efficiency MPPT, support 8-28V, 100W solar high current charging, it is recommended that each solar panel be equipped with on 2、Can adjust the output voltage arbitrarily, CC-CW automatic control (can support single or multi-cell lithium battery or lithium iron phosphate or lead acid battery, high power LED, etc.) 3、Battery for complete charge management 4、PWM switching frequency: 300KHz 5、Constant current charging current is set by external resistor Specification Note: This product is suitable for 9V 12V 18V 24V solar panels, wind turbines, solar street lights, etc. It can also charge batteries, nickel-cadmium, nickel-metal hydride, lithium batteries (battery packs). Both the input and output terminals use high-end switching power supply and special high-frequency low-resistance electrolytic capacitor (LOW ESR) to ensure the output ripple. Features: 1. The maximum power point tracking of solar cells, the output current is greater than the solar panel current, the real ultra-high efficiency MPPT, support 8-28V, 100W solar high current charging, it is recommended that each solar panel be equipped with one module) can be expanded in parallel with multiple modules recharging current 3. Battery for complete charge management 4.PWM switching frequency: 300KHz 5. Constant current charging current is set by external resistor 6. Trickle charging of deeply discharged batteries 7. Dual indication of charging status and charging end status (red light on charging/full blue light/red light flashing blue light always indicates no battery is connected) 8. Low power soft start function 9. Adopt imported high frequency low conduction internal resistance double MOS tube, 10A high current double diode, high efficiency flat high power inductor, constant copper current detecting resistor, perfect anti-reverse protection of ultra low dropout, no work, no anti-reverse Connect the damaged charging board. Quality Assurance! Specification: Color: Red Material: PCB Module nature: with true MPPT solar maximum power point tracking function, fully automatic intelligent charging management, low power consumption Can charge 6V or 12 batteries or 8.4V, 12.6V, 16.8V lithium battery, 7.2V, 10.8V, 14.4V lithium iron phosphate battery, 2-4 string lithium battery, lithium iron phosphate charging management board Output current: 2A/5A There are two types of maximum charging current: A version 5A B version 2A default delivery 5A version A Charging indicator: Yes. The fast charging red light is long, and the full red and blue lights are alternately shining. Fully automatic stop. MPPT function: Yes. MPPT maximum power point automatic tracking function, can maximize the full use of solar charging Ultra low power consumption: yes! Ultra low dropout design for low power consumption and higher conversion efficiency, professionally adapted to solar panels Operating temperature: industrial grade (-40 ° C to +85 ° C) Load adjustment rate: ±1% Conversion efficiency: Max: 93% Peak: 95% Different lighting conditions are different. Charging mode: fully automatic intelligent three-stage charging mode. Self-tracking solar power size automatically adjusts the charging current No-load current: 3MA Even in the morning, the weak sunlight can be easily and automatically started, eliminating the manual switch. Input reverse connection protection: Yes. Exclusive design MOS tube ultra low dropout anti-reverse protection, input reverse connection does not work Output reverse flow protection: Yes. Effectively prevent the electric reflux charging plate of the battery at night! Wiring method: with terminal block Size: 6 * 3.5cm / 2.4 * 1.4in Weight: approx. 47g Package List: 1 * Module Debugging method: Step 3: Connect the unpowered battery and monitor the charging current at the output string ammeter to fine tune the MPPT potentiometer until the charging current is maximum. The debugging method of replacing the solar energy with a regulated power supply: