Feature: Easy adjustment: The adjustment knob allows very easy adjustment of MPPT voltage, output voltage and output current limitation. Stable operation: excellent heat dissipation ensures stable operation at high power, and is also very efficient and reliable. Better Display: Supports real-time control of MPPT regulating voltage, the boost converter is very simple to operate. Practical Applications: Allows for wide application in solar charging, lithium battery charging, adjustable power supply and so on. Easy to Install: Designed for compact size and light weight, installation is very simple to complete in minutes. Specification: Item Type: Buck Recharge Converter Input voltage range: DC7-80V Output voltage range: DC1,4-79V Voltage display range: 1,40-80,00 V (accuracy ± 0,1 V) Output Current Adjustment Range: 0-20A Current display range: 0,00A-20,00A (accuracy ± 0,03A) Adjustment knob: For MPPT voltage regulation, output voltage regulation, output current limit adjustment. MPPT function: Yes Anti-return function: Yes, no ma need to connect diodes to connect the battery. Constant Current and Current Limitation: Yes Overvoltage protection: 300W, overpowering will turn off the output and display OPP. Product Size: approx. 108 x 64 x 48mm / 4.25 x 2.52 x 1.89 in Application: For solar power charging, lithium battery charging, LED DC drive, adjustable power supply. List of packages: 1 x Buck Boost Converter