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09
10
3.4.3 Battery Connection
Battery Communication Connection
If the battery type is lithium-ion or ternary battery which need communication between the inverter
and battery management system (BMS), the communication connection must be installed.
RJ45 Terminal Configuration of Battery Communication
Pin
1
Function Description
2
3
4
BAT 485 B
BAT 485 A
BAT CAN L
BAT CAN H
5
6
7
8
NC
BAT NTC
BAT Wake UP
GND-S
Pin
1 2
3
4
5
6 7 8
Make the RJ45 terminal based on above introduction of each Pin definition, you could either make
RS485 connector or CAN connector based on the best support connection way of your battery packs.
For Lead acid battery temperature sensor, please connect signal to Pin6 and Pin8, the other pins are
not connected.(External temperature sensor is needed, the sensor is 15KΩ thermistor for typical, or
consult Luxpowertek)
This part in this manual only describe the battery connection on inverter side, should you need more
detailed information regarding the battery connection on battery side please refer to the manual of
the battery you are using.
Step 1: Assemble the terminal.
battery connection
A. Diameter
B. Cross Section
C. Strip Length
10-12mm
20-25mm²
-10mm
Cable
Tighten Waterproof Sleeve
Terminals On Inverter
① ② ③
①
②
③
Recommendations
Install a DC isolator between battery and inverter
can avoid potential damages caused by electric arc.
Red Cable
Black Cable
+
2*M6 Screws
Warning!
Polarity reverse will damage the inverter!
For the first time power on, please turn on the battery after LCD show "Run without Bat",
otherwise the it may shorten the lifetime of inverter.
For lead acid batteries temperature sensor, please refer to Page29 “Cable Connection” figure.
For Li-ion battery
1. If work with lithium battery , please make sure it is compatible with the Lux units. Now Lux
Power inverter is compatible with Pylontech, Dyness, Aoboet, Weco, Murata, Merit 48V battery.
2. After battery power cable and communication cable connection, users need to choose battery
brand by LCD.
3.The battery communication cable inside the Luxpower carton box is used for Pylontech battery,
if you are using Pylontech battery, you can use the cable directly. Please note there is label ‘BAT’
(need to plug into battery side) attached with the cable, do not plug the battery side terminal to
the inverter side.
4.If you install more than 8pcs Pylontech battery, you need a hub for the battery.
5.Please remember to connect Master battery to inverter if you have battery group, and set the
Master battery for the battery group.(Please contact battery manufacture for battery group setup).
For Lead-acid battery
1. The lead acid battery temperature sensor cable is optional, if required, please request the
temperature sensor cable from your supplier.
2. There are three stages for lead acid battery charge . For charge part, please set CV voltage and
floating voltage. For discharge part, please set the discharge cut off voltage for on grid and off grid
Connection between inverter and battery
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