The EcoFlow BKW-RIVER cable is designed for portable Power stations of THE RIVER series for connection to PowerStream Microinverter. NOTE: Connect the solar panels to the Power station first, then connect the Power station to the microinverter with the Ecoflow BKW-RIVER cable.This text is machine translated. The EcoFlow BKW-RIVER Cable is for RIVER Series Portable Power Stations, DELTA mini, and DELTA (1300) to connect with PowerStream Microinverter. Cable Type: Cigarette Lighter Cable. Length: 0.5 m. When the said power stations are connected to the microinverter, their connection port (the 12V car charging port) is an output port only. This means the power stations cannot be recharged through their car charging port. Due to the limitation of the car charging port, the said power stations are subject to an output limit of 100W.