Ioniq5/EV6 BMS CMU questions
Posted: Fri Dec 12, 2025 8:04 pm
I and another EV converter are sharing an Ioniq 5 battery pack for 2 400V packs and I'm wondering if we can re-use the 8 CMUs we have as part of the BMS.
1. I think there's some work going on for the Kona CMUs but not sure if anyone is supporting these CMUs. Are there any open source controllers and/or knowledge about these modules - such as the connector pin-out - available? I know there's a closed-source WDR controller that claims to work with these modules but when I wrote the company for any information they said I had to buy their unit before getting any documentation.
2. Does anyone know what the connector part number is? If so we could design a PCB to make it much easier to wire to another BMS but still re-use the Hyundai battery sense wiring harnesses.
1. I think there's some work going on for the Kona CMUs but not sure if anyone is supporting these CMUs. Are there any open source controllers and/or knowledge about these modules - such as the connector pin-out - available? I know there's a closed-source WDR controller that claims to work with these modules but when I wrote the company for any information they said I had to buy their unit before getting any documentation.
2. Does anyone know what the connector part number is? If so we could design a PCB to make it much easier to wire to another BMS but still re-use the Hyundai battery sense wiring harnesses.