Technical resource

BMS communication: CAN, RS485 and the protocol behind the connector

CAN and RS485 describe physical communication methods, not a universal battery language. Message identifiers, scaling, timing, alarms, charge limits, pinout and termination still need to match the inverter implementation.

Evidence before promises

Reference guidance only. Final specifications, compatibility, certifications and market obligations are confirmed for the exact model and destination.

Configuration review

Why matching the plug is not enough for a safe battery–inverter integration.

01

Physical layer

Confirm connector, pinout, ground reference, baud rate and termination.

02

Messages

Confirm SOC, voltage, current, temperature, alarms and allowable limits.

03

Control

Determine which device commands charge, discharge, wake and shutdown.

04

Fallback

Define safe behavior if communication is lost.

What we confirm before quoting

  • Confirm the exact model—not only the brand or series.
  • Record firmware, protocol and parameter versions.
  • Keep evidence with the purchase and change history.
  • Revalidate when a component, supplier or destination changes.

What LithVolt can support

Battery PACK engineering and assembly, matched inverters and chargers, solar and protection components, documentation coordination, pilot builds and export delivery. Cell and accessory sources are disclosed and controlled per project where relevant.

PACK

GLOBAL

EVIDENCE

A controlled project path

1

Define

Application, load, environment, destination and commercial target.

2

Configure

Battery architecture, BMS, interfaces and surrounding products.

3

Validate

Exact-model evidence, sample test plan and acceptance points.

4

Deliver

Controlled production, packing, logistics and support handover.

Bring us the equipment and duty cycle

Send the voltage, power, runtime, dimensions, quantity and destination. We will identify what can be configured now and what must still be tested or confirmed.