solar chargingLithium battery chargingLED constant current driverTrace point voltage visual adjustmentRegulated supplyInput voltage range: range DC7-80VOutput voltage range: DC1.4-79V voltage display range: 1.40-80.00V (accuracy +0.1V or so)Output current adjustment range: 0-20ACurrent display range: 0.00A-20.00A (accuracy +0.03A or so)Adjustment knob: MPPT voltage adjustment, output voltage adjustment, output current limit adjustmentMPPT function: yesAnti-backflow: Yes, no need to string diodes to connect to the batteryConstant current (current limiting): yesOver- protection: 300W, the output will be turned off if the is exceeded, and OPP will be displayedModel Number: Digital LCD Display Automatic Step up downModel Number: Automatic Step up down moduleType: Voltage RegulatorType: Buck Boost ConverterProduct weight: 194g without displaycolor:BlackMaterial:PCBsize:108 x 64 x 48mmPackage Contents:1 x Buck Boost ConverterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.