Screen Monitor LIMINK Portable Display Triple Extender for Dual S20,15.4" Monitor Laptop Geschilder Geschilder Batterijbeheersysteem (BMS): de ingebouwde BMS accupakketten bewaken de werking en voorkomen dat de batterij niet werkt Special functions: The S20 dual monitor USB C port supports reverse charging of laptops using the power supply but also allows you to get a better viewing and gaming experience in your leisure time