BMS Cable PCS - Battery

Created by John Jackson, Modified on Thu, 16 Oct at 3:40 PM by John Jackson

The BMS Cable which is marked with PCS at one end and BATTERY at the other end (as per image below), can ONLY be used as an Inverter to Master Battery Cable and MUST NOT be used as a BMS Interlink Cable from Battery OUT Port to the next Battery IN Port. These PCS - BATTERY Cables are supplied by Sunsynk as part of the Inverter to Master Battery Cable Kits for the SUNBATT 5.12kW Batteries and must therefore be used for that purpose only and should NOT be considered as a BMS Cable that is compatible with all of Sunsynks newer models of Batteries, i.e. L-Series, W-Series, G-Series etc.

This PCS - Battery Cable WILL work ok from Inverter to Master Battery as CAN-L and CAN-H use Pins 5 and 4. But it can NOT be used as an Interlink Cable from OUT to IN which use Pins 1 and 2 which are not straight through connections with this particular PCS - Battery Cable. Because Pins 1 and 2 are not straight through links, they cross-over to other Pins. Hence the PCS to Battery from Inverter CAN Port to PCS is ok, but no comms when connecting OUT to IN.

Inverter CAN Port

Battery PCS Port

Battery IN / OUT Ports