Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si Professional solar charging Lithium battery charging LED constant current driver Trace point voltage visual adjustment Regulated power supply Input voltage range: range DC7-80V Output voltage range: DC1.4-79 V voltage display range: 1.40-80.00V (accuracy +0.1V or so) Output current adjustment range: 0-20A Current display range: 0.00A-20.00A (accuracy +0.03A or so) Adjustment knob: MPPT voltage adjustment, output voltage adjustment, output current limit adjustment MPPT function: yes Anti-backflow: Yes, no need to string diodes to connect to the battery Constant current (current limiting): yes Over-power protection: 300W, the output will be turned off if the power is exceeded, and OPP will be displayed Model Number: Digital LCD Display Automatic down Model Number: Automatic down module Type: Voltage Regulator Type: Boost Converter Product weight: 194g without display color:Black Material:PCB size:108 x 64 x 48mm Package Contents: 1 x Boost Converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.