HYDROS IceCap Battery Cable Kit This cable kit allows you to connect your HYDROS WaveEngine to the IceCap Battery Backup V3. Connection is simple: Connect the HYDROS WaveEngine Power Supply to the battery kit cable with the female 4-pin GX12 and connect the other end to the "Input: Pump Power Supply" port on the side of the IceCap Battery Connect the battery kit cable with the male 4-pin GX12 connector to the WaveEngine power port and then connect the other end of the cable to the "Output: Pump" port on the side of the IceCap Battery Connect the smaller IceCap Battery Backup power supply to the "Input: Charger" port on the side of the IceCap Battery