Used to connect power stations with XT60 port and solar panels with MC4 connector. Compatible Power Station: ALLPOWERS R600, R1500, R2500, R3500, R4000, S2000, S2000 Pro, and other power stations with XT60 port. Compatible Solar Panel: ALLPOWERS SP027, SP029, SP033, SP035, SP037, SP039, SF100, SF200, SF400, and other solar panels with MC4 connector.