WeCo Srl Italia
www.wecobatteries.com
4K4 PRO V 1.11 28-9-2021
For parallel battery connections follow the instructions provided in Section 9 and Section 10 of this manual. These sections give
instructions on the diameter of cables to be used in parallel installations. Failure to do so can result in damage to the battery and
potentially cause personal injuries.
Failure to follow these wiring conventions can result in damage to the battery and potentially cause personal injuries.
For parallel battery connections follow the instructions provided in Section 9 and Section 10 of this manual. These sections give
instructions on the diameter of cables to be used in parallel installations. Failure to do so can result in damage to the battery and
potentially cause personal injuries.
For maximum charge and discharge current refer to the tables given in Section 9, Section 10, Section 11, Section 12 and Section 13 of
this manual.
BATTERY SCREWS FIXING TORQUE
All Power Cable Connectors with the battery terminal connector should be tightened to
14Nm
All cables and Bus Bar connected with the battery terminals must be checked every three months
EXTERNAL BUS BAR / CABLES SCREWS FIXING TORQUE
All power cables connected with external parallel bus bar shall be fixed with
40Nm
torque ( M8 Bolt or above)
The drawings in this manual are for reference only. If the drawings in this manual do not match the actual product that is being installed,
DO NOT PROCEED. Ensure that the battery is isolated and that all connections are removed. Store the battery in a safe place and call
WeCo product assistance for support
.
The batteries in each stack communicate with each other via the RS485 ports. The master battery always connects to the RS485-B port
and from there connects to the RS485-A port on the Sub#1 module. The RS485-B port on the Sub#1 module then connects to the RS485-
A port on the Sub#2 module and so on depending on the number of batteries you have in a stack.
The BMS-CAN port on the Master battery connects to the Inverter.
