How to Determine if an Inverter Can Communicate with Seplos BMS

It is crucial to ensure that the battery BMS is compatible with your inverter prior to purchasing an energy storage battery. This can help you avoid the hassle of returns and exchanges, reduce investment costs, and ensure a smooth setup of your energy storage system.

In this article, we’ll explain how to determine whether your inverter can communicate with the Seplos BMS.

Seplos BMS inverter compatibility depends on the communication interface, protocol version, baud rate, and pin definition supported by both the battery BMS and the inverter.

What inverters work with Seplos BMS?

Seplos has tested a variety of inverters available on the market and confirmed that they are compatible with Seplos BMS communication. You can refer to the table below to check whether your inverter’s brand and model are included.

But if your inverter’s brand and model are not listed, what should you do?

Don’t worry — you can follow the steps below to seek assistance from a Seplos engineer. 

For systems using Victron, Growatt, or other inverter brands, confirm the required CAN or RS485 protocol before wiring, because a matching connector does not necessarily mean that the BMS communication settings are compatible.

Part 1: Review the Specification of the Inverter

As most inverters support the Pylon CAN protocol, what you need to do is check the user manual of the inverter to see whether it uses the Pylon CAN or Pylon 485 protocol, as well as the pin configuration.

If the inverter supports the Pylon CAN protocol, check its manual to verify that the PIN definitions match those of the Seplos BMS. A matching PIN definition allows direct communication between the inverter and the BMS. If the definitions differ, adjust the PIN configuration accordingly.

Seplos BMS PIN Definition:

When using RS485 communication, compare the Seplos RS485 pinout with the inverter port definition before connecting the communication cable.

Inverter PIN Definition:

Part 2: Send the Protocol to Seplos Engineers

Seplos engineers maintain a list of communication protocols that have already been tested. Any inverter included in this list can communicate seamlessly with Seplos energy storage batteries. To confirm compatibility, simply send your inverter’s communication protocol to the Seplos engineering team.

Part 3: Modify the Protocol if Necessary

For the RS485 protocol, most inverter manufacturers use different communication standards, which may result in communication failure. To avoid this issue, please confirm the compatibility with your sales representative before purchasing a Seplos BMS or Seplos energy storage battery. However, if you forget to do this step, you will need to coordinate with the inverter manufacturer to modify the protocol and ensure your energy storage project operates smoothly.

Part 4: Ask Custom Protocol from Seplos

If the inverter manufacturer uses a completely new communication protocol, it will not be compatible with the Seplos BMS by default. In this case, you will need to provide the latest protocol documentation to the Seplos engineering team. If necessary, Seplos can develop a custom protocol to enable compatibility.

With more than 8 years of experience in R&D and manufacturing in the energy storage field, Seplos has developed a BMS that can communicate with most mainstream inverters on the market. However, there are many inverter manufacturers, each using different manufacturing standards and communication protocols. We cannot eliminate these differences, but please remember that if you have any questions or concerns about inverters or energy storage systems, do not hesitate to contact us. Seplos is customer-centric and committed to providing the best LiFePO4 battery and services for every energy storage user.

FAQs About Seplos BMS Inverter Compatibility