Low Voltage - Wiring Information for Multiple Batteries

Created by Bryonie Simon, Modified on Sat, 9 May at 11:48 AM by Bryonie Simon

Before reading this document, please refer to the table below, which sets out the maximum number of batteries that can be wired together according to the battery model. Please be advised that when mixing compatible battery models, it is essential to consider the smallest number between all the different models that have been installed.

Model	Maximum number of batteries connected together
SSLB1/CAT-L	16
SUN-BATT 5.12/SUN-BATT 5.32	8
SUN-BATT 10.65	15
L5.1/L5.3	32
L3.0	4
G5.3	32
G3.0	4
W5.3	32
W10.64	32

Example for up to 2 batteries and 1 inverter

No bus bar required, and a single battery breaker is sufficient.

Example for 3 or more batteries and 1 inverter.

Bus bar is required and a battery breaker per battery is needed.

Example for any number of batteries and 2 or more inverters.

Communication Between Batteries and Inverter

Between Master Battery and Inverter

Battery Model	Socket on the Battery	Socket on the inverter
SSLB1/CAT-L	CAN	BMS CAN-CAN/RS485-CAN
SUN-BATT	CAN
L/G/W	PCS

Between Master Battery and Slave Battery

Battery Model	Socket on the Master Battery	Socket on the Slave Battery
SSLB1/CAT-L	Right Socket	Left Socket
SUN-BATT	LINK OUT	Link IN
L/G/W	OUT	IN