Resetting the Battery Management System (BMS) of your Tesla is known as a Tesla battery calibration. You should calibrate your Tesla battery to improve the performance and lifetime of the battery.
You can easily calibrate Tesla battery by letting the battery drain and parking the Tesla for several hours. After 12 hours, the Tesla battery management system automatically calibrates itself.

Why Do I Need to Calibrate Tesla Battery?
You should calibrate your Tesla car battery from time to time. Here are the reasons:
- Battery Performance Boost: The BMS’s (battery management system) calibration may aid in enhancing battery performance. The battery’s charging and discharging cycles are precisely managed by the BMS after calibration.
- Fix Battery Issues: Your Tesla battery may be giving you trouble. Calibration of the BMS might be used to address reduced range or unexpected battery discharge.
- Improve Range Accuracy: Based on some factors, the BMS in your Tesla determines your range. The battery’s temperature, driving history, and current state of charge (SOC) are these factors. Inaccurate range estimates may result from the BMS’s calibration deteriorating over time.
How to Calibrate Tesla Battery?
Follow this detailed step-by-step guide to calibrate your Tesla’s battery management system.
1. Drain the Battery
Drive your Tesla until the battery has less than 10% remaining. Check the touchscreen display on the car to see the battery’s charge.
Now, tap on the “Charging” icon in the bottom left corner of the touchscreen if you have a Tesla Model 3 or Model Y. You will see the battery level on top of the screen.
On the touchscreen of your Tesla Model S or Model X, click the “Controls” icon in the upper left corner. After that, click the “Vehicle” tab. The top of the screen will show the battery level.
2. Park and Rest
You should choose a secure location to park your Tesla. Choose a safe location, such as your driveway, garage, or parking lot. Verify that the parking spot for the car is level.
For at least 12 or more hours, leave the car parked. During this time, you should avoid operating the vehicle or opening the doors. This will give the BMS enough time to calibrate itself.
3. Charge the Battery
You should plug the Tesla in to finish the 12-hour charging cycle. You can plug your car into a conventional household outlet, a Tesla Supercharger, or a Tesla Wall Connector.
Open the Tesla app, and then select the “Charging” tab if you are using a Supercharger for a Tesla. Click “Find a Supercharger” after that. The app will direct you to the Supercharger you wish to use after you choose it.
If you are using a Tesla Wall Connector, open the Tesla app and tap on the “Charging” tab. Then, tap on the “Find a Wall Connector” button. Select the Wall Connector that you want to use and the app will navigate you there.
Plug the Tesla Mobile Connector into the conventional household outlet if you’re using one. After that, plug the other end of the connector into the car’s charging port.
4. Examine the Calibration
The BMS will be calibrated when the car has finished charging fully. By looking at the predicted range of the Tesla, you can determine if the BMS is calibrated.
If you see that the predicted range appears to be accurate, the BMS is calibrated.
Tap on the “Charging” icon in the touchscreen’s lower left corner to view the vehicle’s estimated range. The top of the screen will show the estimated range.
Read more: Differences Between Tesla Mobile Connector vs Wall Connector
Precautions to Follow When Calibrating a Tesla Battery
You should abide by some rules to ensure the proper calibration of your Tesla battery. These are:
- Maintain Proper Temperature: Your Tesla battery should ideally be calibrated in a temperature-controlled setting. So, you should park the car somewhere where the temperature is comfortable.
On a hot day, always avoid calibrating your Tesla battery. The calibration procedure may be impacted if the heat causes the battery to overheat.
- Ensure Proper Power: You should check if the car is plugged into a stall that is delivering enough power when you are using a Tesla Supercharger. Look at the charging tab to see a stall’s power output.
- Ensure Appropriate Connection: Make sure the Tesla Wall Connector is connected correctly. Also, ensure that it is set to give enough power if you’re using one.
- Ground the Outlet: You must ensure that the outlet is correctly grounded and has adequate power available if you’re using a standard household outlet. Look at your home’s electrical panel to determine a common household outlet’s power output.
How Often Should You Calibrate Your Tesla Battery?
Every 6–12 months, according to Tesla, your battery should be calibrated. You should not frequently charge your battery to 100%. The battery should be charged between 10% and 80% at all times.
Also, remember to not let the battery run out entirely. You should keep the battery at least 10% charged. Always be cautious and plug in the charger when the charge is near 10%.
You should also remember to get routine maintenance done on your Tesla battery. Tesla advises servicing your battery every 25,000 miles or every two years.
You might need to calibrate your Tesla battery more frequently if you utilize it in a variety of situations, such as freezing weather or regular towing.
If you see any of the warning indications listed below, you should calibrate the Tesla battery more frequently:
- The estimated range of the Tesla seems to be off.
- The performance of the vehicle is diminished.
- The battery in the car is deteriorating faster than anticipated.
Read More: Everything About Tesla Battery Preconditioning: When, Why, How?
Frequently Asked Questions [FAQs]
Does my Tesla battery need to be discharged to 0% before I calibrate it?
No. The ideal charging range for your battery is between 10% and 80%.
Can my Tesla battery be calibrated while it is being charged?
No, the calibration procedure won’t function effectively unless the Tesla is stationary for at least 12 hours.
How much does calibrating my Tesla battery cost?
Tesla doesn’t charge for calibrating batteries.
What should I do if my Tesla battery won’t calibrate?
You should seek help from Tesla service if you are unable to calibrate your Tesla battery.