Tesla calibrates the battery management system (BMS) after charging to ensure that it has an accurate understanding of the battery’s state of charge and range.
This is done by measuring the voltage and temperature of each battery cell and comparing it to a known baseline.
There are a few different ways that Tesla can calibrate the BMS. One common method is to let the battery fall below 10% state of charge (SOC) and then charge it back to 100%. This allows the BMS to see the full range of the battery’s state of charge and to adjust its calculations accordingly.
Another way that Tesla can calibrate the BMS is to use a process called “battery balancing.” This involves charging each battery cell to the same voltage. This can be done by driving the car until the battery is drained and then charging it back to 100%.
Tesla also calibrates the BMS periodically when the car is parked. This is done by measuring the voltage and temperature of each battery cell and comparing it to a known baseline.
If you are seeing a message that says “Tesla calibrating after charging,” it means that the BMS is updating its calculations based on the latest data from the battery cells. This is a normal process and should not take more than a few minutes.
Here are some tips to help Tesla calibrate the BMS:
- Keep the battery between 20% and 80% SOC as much as possible.
- Avoid charging the battery to 100% all the time.
- Drive the car regularly.
- Park the car in a cool, dry place.
If you are still having problems with the BMS, you can contact Tesla customer support for assistance.