1. The input and output terminals are made of a high-side switching power supply for high-frequency low-impedance electrolytic capacitors (LOW ESR) to ensure output ripple and effectively filter switching power supply faults. 2. MPPT solar maximum power point tracking, automatic intelligent charging management, low power consumption. 3. The maximum conversion efficiency is 93% and the maximum value is 95% depending on the lighting conditions.4. Intelligent automatic three-stage charging mode. Self-tracking solar charging current is automatically scaled.5. With 3mA no-load current, even very weak morning sun can be activated easily and automatically without manual switching.6. With reverse input polarity protection. Designed ultra-low dropout exclusively prevents reverse polarity protection of MOS transistors, and reverse input does not work.7. With output reflow protection. Effectively prevent nighttime reverse battery charging meter! Specification: Item Type: Solar panel regulatorInput voltage: DC 8-28V input DC voltage. (No AC input)Output voltage: DC 5-26V continuously variable transmission6V battery can charge 12 or 8.4V, 12.6V, 16.8V lithium battery 7.2V, 10.8V, 14.4V lithium iron phosphate battery2-4 series lithium battery, lithium iron phosphate charging management boardOutput current: 5A maximumCharge indicator: Yes. The fast red and blue lights of the fast red light flash alternately. Automatically shut down. MPPT function: Automatic MPPT maximum power point tracking, maximizing solar charge utilization. Low voltage: 1V (same for buck regulators, input voltage is at least higher than 1V output)Low power consumption: yes. Extra low voltage design for low power consumption and high efficiency, professionally suited for solar panels Operating temperature: Industrial Grade (-40? to +85?) Load Adjustment Rate: 1%Voltage Regulation Rate: 0.5%Connection: With TerminalMPPT voltage: adjustable, the voltage of different MPPT solar modules is different, even if the mppt voltage can not adjust the mppt solar controller, can it be called mppt? The MPPT control technology uses a load meter load efficiency ratio control scheme, which is generally about 30% higher than the DC-DC MCU + PWM step-down power supply. Make full use of solar energy and operate at low power. Reduce power losses! The MPPT function can effectively prevent the solar panel charging voltage from being slowly and slowly killed by the battery.Note: The first load will pre-adjust the output voltage. Please monitor the battery voltage closely to avoid overcharging! Do not have unprotected lithium batteries!Debugging method:Step 1: If voltage is output in step 2, connect the solar cell and do not charge the bottle. If there is no output, the small output slowly rotates counterclockwise to the MPPT output voltage.Step 2: Passing the small output voltage into counterclockwise until both red and blue lights flash, then adjust coarse output voltage to full cut-off voltage Step 3: Repair the dead battery and monitor the charging current on the output chain ammeter. Adjust the potentiometer with MPPT until the charging current is maximum.Step 4: Only fill the battery. If the blue light turns clockwise, increase the output voltage until the red light turns on. Then slowly move a small output voltage counterclockwise until only blue is on, then use a multimeter to make sure the cut-off voltage is correct to avoid overcharging!Transfer Method instead of using solar energy:step 1: The power supply has adjusted the solar MPPT voltage (eg 18V)Step 2: If the output voltage is adjusted clockwise until there is no more large MPPT voltage output, do not connect the power supply to the input terminal and do not charge the battery. Then slowly turn counter-clockwise until the small MPPT drive has just the voltage output. Step 3: Decrease the output voltage counterclockwise until the red and blue lights flash, then roughly adjust the output voltage to full cut-off voltagestep 4: Only fill the battery. If the blue light turns clockwise, increase the output voltage until the red light turns on. Then slowly move a small output voltage counterclockwise until only blue is on, then use a multimeter to make sure the cut-off voltage is correct to avoid overload! Board function load management:1. Solar cell maximum power point tracking, the output current is higher than the solar panel current, ultra-efficient true MPPT, support 8-28V, 100W high current solar charging, it is recommended that each module of solar panel be connected in parallel to develop charging current2. Output voltage adjustable, DC-CW automatic control (can support single or multi-cell lithium battery or lithium iron phosphate battery or lead acid battery, high power LED. Package List: 1 x Solar Panel Regulator