4.2 ELECTRICAL WIRING CONNECTION
1) Before installation, make sure the battery is off (no indicator light is on).
2) Before installation, make sure the inverter is off.
3) If a DC circuit breaker is installed between the battery and the inverter, make
sure the DC circuit breaker is off before the battery is installed.
4) Please insert the negative power cable plug into the negative connector of the
battery and ensure that it is firmly connected.
5) Connect the other end of the negative power cable to the inverter.
6) Please insert the positive power cable plug into the positive connector on the
battery and ensure that it is firmly connected.
7) Connect the other end of the positive power cable to the inverter.
Note:
1) Be sure to use the power cable connector dedicated to BST to connect the battery, other-
wise it may be dangerous due to poor connection.
2) The power cable connecting battery and inverter is optional. Please order according to
the actual quantity required.
3) Please connect the positive pole after completing the negative pole connection. It is
strictly forbidden to insert the positive and negative pole cables into the battery at the same
time and then connect the inverter, otherwise it may cause short circuit risk due to overlap-
ping.
4.3 COMMUNICATION CONNECTION
1) When the inverter is in lead-acid battery mode, communication connection is
not necessary, but we strongly recommend using the inverter model matched
with BST and making communication connection, so as to better protect the
battery and inverter.
2) The battery has two independent RS485 ports for communication with the in-
verter and EMS. If the inverter only supports can communication, the second
port can be connected (please refer to Section 2.3 INTERFACE INTRODUCTION).
3) The RJ45 pinout of the communication port is defined as follows.
10
Installation
Pin
Definition
1, 8
RS485-B
2, 7
RS485-A
3, 6
GND
4
CAN-H
5
CAN-L
