This guide answers one question: how do you confirm that a BMS and smart charger can actually communicate and operate together before integration?
Start with the Real Compatibility Question
If a charger and a BMS both have communication functions, that does not automatically mean they can work together. Compatibility depends on the interface, the communication protocol, the messages exchanged and the control behavior expected by the charging system.
First Confirm the Battery and Charging Requirements
Before checking communication, confirm battery chemistry, exact series count, target charging voltage and required charging current. Communication cannot correct a charger that is electrically unsuitable for the battery.
Interface and Protocol Are Different
CAN, RS485 and other interfaces describe how devices connect electrically. The protocol defines what the messages mean. Two devices can use the same physical interface and still be incompatible if they use different message definitions.
Define What the Charger and BMS Must Exchange
List the information or commands required by the charging system. Depending on the project, this may include charge enable/disable, requested voltage or current limits, battery status, temperature or fault information. Do not assume every charger-BMS pair uses the same data.
Verify the Exact DALY Smart Charger Configuration
DALY's current product list includes Smart Charger models for Li-ion and LiFePO4 batteries, including Bluetooth App and OTA functions on current product listings. The exact charger model and any BMS communication/linkage requirement must still be confirmed for the specific project.
Source: DALY current Smart Charger product listings
Use DALY's charger category as the product entry point, then confirm the exact charger and BMS combination before production.
Source: DALY Charger category
What to Send DALY for Compatibility Confirmation
| Project input | What to provide |
|---|---|
| Battery | Chemistry, exact S count, pack voltage and capacity |
| Charging | Target charge voltage and required charging current |
| BMS | Exact BMS model/series and firmware if known |
| Charger | Exact charger model or required charger specification |
| Communication | Interface and required protocol/message document if available |
| System control | What the charger/BMS must command or report |
| Commercial | Sample/pilot/production quantity |
Send these parameters to DALY. The technical team can confirm whether the proposed charger and BMS can communicate as required, identify any configuration or protocol work needed, and provide the relevant datasheet, communication documentation and quotation.
Q1If both devices have CAN, will they communicate automatically?
No. They must also use compatible message definitions and control logic.
Q2Should I check voltage and current before protocol compatibility?
Yes. First confirm that the charger is electrically suitable for the battery, then verify communication compatibility.
Q3What if I do not know the protocol?
Send the charger and BMS model information to DALY so the required communication documents and compatibility can be checked before final selection.
Post time: Aug-20-2026
