The state of the battery: information that’s difficult to access
The Battery Management System (BMS) is the software responsible for controlling a traction battery. One of its missions is to measure the ageing of batteries, by calculating an SOH or, for certain brands, a degradation rate.
This information, although essential, is not simply made available by manufacturers. At best, a diagnostic tool (such as a suitcase) can provide access to relevant data, but only for certain vehicles. What’s more, this data is heterogeneous, making it difficult to understand for the operators who carry out the diagnostics, and even more so for the buyers of the vehicle.