Compatibility The cable is compatible with EcoFlow portable power stations or extra batteries that have an extra battery port (XT150). Connection Use the cable to connect the charger&';s Portable Power Station Port with the extra battery port of the power station or extra battery. Operation With this cable, the charger supports Battery Maintenance Mode and Reverse Charge Mode, in addition to Charge Mode. To change the mode, go to the device detail page on the EcoFlow app and tap the desired mode icon.