Battery management system
Table 1 , contains the pin layout for the most used solar off grid inverters. The Battery port RS485 (RJ45 port) is located on the lithium ion battery Li-2021. Only 2 pin are required for the BMS communication protocol
| PinNumber | Battery RS485 | BatteryCAN | DEYE | Victron | Voltronic | GOODWE | Growatt |
| 1 | B | B | A | ||||
| 2 | A | B | |||||
| 3 | A | H | |||||
| 4 | L | B | H | H | |||
| 5 | A | L | L | ||||
| 6 | GND | ||||||
| 7 | A | H | |||||
| 8 | B | L | GND |
Voltacon Batteery Li2021 (50Ah) and Li2022 (100Ah)
BMS communication port on lithium ion batteries
US2000 & US3000 BMS Cable from Voltronic Inverter to Pylontech Batteries
Voltronic special BMS cable for Pylontech batteries
BMS Communication Port on Hybrid Inverters (Infinisolar & Voltasol)
The following image illustrates the pins used on hybrid inverters made by Voltronic. When US2000 & US3000 Pylontech batteries are connected to the inverter the Pin 4 and 5 will are in use.
BMS Box RJ45 Communication Port
Menu settings for Li-2021 Voltacon Batteries
Conversol off grid inverter menu for lithium ion batteries
Third party lithium ion battery connection
Axpert, Conversol , King and V5 off grid inverter
BMS Communication port for Axpert, Conversol off grid inverters, serial port with pin 3 and 5
For Hybrid inverter Infinisolar and Voltacon, refer to the online PDF file here