Another BMS recall for the Kona

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In order to evaluate the condition of our cells and the effectiveness of our BMS in re-balancing the cells I would like to be able to see the change in individual cell voltages while the BMS is performing its magic.
Anybody have a method to do this without having to crack open the modules and attach measurement wiring to each cell?

Additionally, if someone has collected real data that could be used as a comparison benchmark, that would be extremely helpful.
 
eGuru said:
In order to evaluate the condition of our cells and the effectiveness of our BMS in re-balancing the cells I would like to be able to see the change in individual cell voltages while the BMS is performing its magic.
Anybody have a method to do this without having to crack open the modules and attach measurement wiring to each cell?

Additionally, if someone has collected real data that could be used as a comparison benchmark, that would be extremely helpful.
Click to expand...
Car Scanner does a great job doing that.
 
eGuru said:
Thanks. I assume you are using Car Scanner to monitor your cells.
Have you ever observed/recorded the balancing in progress?
Click to expand...
Only when charging and observation only.
On the 2024/25 pack, the cells are 1P, not 3P as previous years, so the voltage differential between them was easy to monitor.
 
When I first got the Kona in 2025 the GOM range was 240 miles and that seemed accurate.
I had the BMS update in Aug 2026 but hadn't done a 100% AC charge until yesterday.
The GOM was 330 miles!
And I did a 251 mile journey half 50mph half 70mph, and had 73 miles left and it was at 5miles/kWh.
Which ties in with the 330 miles GOM.
Very happy with that frugality!
Have they altered the battery top and-or bottom buffers ?
 
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