Sofar solar BTS Series - Battery parallel installation; Fuse replacement; Battery Powered Off

BTS E5~20-DS5 user manualV1.1
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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4.4.
Battery parallel installation
The BTS series battery supports expansion up to two battery clusters.
Power cables are connected to the inverter through the BDU, as shown in
Figure 4-15. The battery cluster connected to the inverter is a slave, and
the other cluster is a master. The parallel communication cable is
connected from the COM-OUT port of the master to the Link port of the
slaver. Install a terminal resistor on the last battery module of the
master.
Figure. 4-15 Diagram of battery parallel installation
4.5. Fuse replacement
If the fuse of the battery distribution unit is damaged, replace it by a
professional engineer
Procedure：
1) To power OFF the battery system, set the switch of the battery
distribution unit to OFF, turn OFF the indicator of the battery
black start switch, and all the LED indicator of the battery
distribution unit is OFF. To power OFF the system for five
minutes, ensure that the remaining battery charges are
discharged.
2) Use a cross screwdriver to loosen the screws on the fuses cover
and remove the fuses cover.