How to know if Your Tesla Battery is Bad (and Tips to Optimize)

“How to expand battery capacity and efficiency” and “lower range” are popular issues among Tesla drivers, particularly during the chilly winter season. But how to know if your Tesla’s battery is bad?

To evaluate the battery, configure the energy indicator to “Distance” and the Tesla will show you how far you are able to drive.

Fully recharge the battery to its full capacity and subtract the displayed miles from the EPA-rated range for the vehicle.

The difference between the EPA-rated range and the one displayed on the screen is due to battery degradation.

In this article, we will look further into how to know if Tesla battery is bad, as well as how to check and tips for good battery health.

How to know if Tesla battery is bad?

To evaluate your Tesla’s battery, configure the energy indicator to “Distance” and the vehicle will show you how you are able to drive.

Fully recharge the battery to its full capacity and subtract the displayed miles from the EPA-rated range for the vehicle. The discrepancy in the number of miles is due to battery degradation.

How to check the battery health of your Tesla?

Here are three ways to evaluate the battery capacity of your Tesla without consulting a technician.

Make use of your Tesla App!

Various applications, such as TeslaFi, log your car’s information, particularly charging capacity, providing a more realistic picture of your battery’s condition using the information collected over time.

Assess your mileage

The condition of your car’s battery is predicted to deteriorate over time, so check the number of miles your automobile has traveled and remove 3% from its battery capacity for every 10,000 miles on its odometer.

Generate your own figures

This may appear to be a longer-term remedy than an immediate one, but recharge your car as normal and keep track of the kilometers traveled until it requires another recharge.

Perform this procedure whenever you recharge it, and you’ll have a better knowledge of its battery health.

Tips for Tesla’s good battery health

In this section, we address a variety of recommended practices and ideas for extending the range of your Tesla.

These range recommendations also aid with the overall capacity of your car’s battery, preventing battery deterioration in the long term and contributing to an improvement in range.

Turn on Range Mode

If you have a Tesla Model X or Model S, enabling range mode makes the car run more effectively by lowering the performance of the temperature control system, increasing range, and saving energy.

Activate “Speed Assist”

Speed assist is an option that will enable you to increase the range of your Model 3. On the display screen of the Model 3, a speed limit is displayed. In settings, you may choose how and whether you prefer to be alerted.

To change the speed limit alert configuration, navigate to Controls > Autopilot > Speed Limit Warning and select your preferred options.

Make use of regenerative braking

When you’re driving your Tesla but aren’t using acceleration, or when you just stop accelerating instead of braking to decelerate, the excess charge produced is returned to the battery.

This conserves battery power while also increasing performance and extending range.

Utilize Chill Mode

If you want to get more mileage out of your Tesla battery, use chill mode. Driving at low speeds helps to increase the electric range on your Tesla – “Chill mode” restricts the acceleration and immediate power delivered to the electric motors, increasing overall performance.

Ensure proper tire pressures

Having your Tesla’s tire pressure to the prescribed level lets the car operate more effectively, resulting in less draw on the battery to travel the same range as a slightly deflated car.

Avoid repeated and fast acceleration

If you want to maximize the electric range on your Tesla, this would be the one method that will save you a lot of energy.

You will start losing those precious kilometers if you floor the accelerator. To increase range, avoid unnecessary deceleration and acceleration.

For long road trips, enable Autopilot

Autopilot delivers increased performance than a human driver because it drives continually at the same pace and brakes more gently.

Utilize the in-car Energy App

Depending on your driving behavior, the energy app provides a personalized estimated range to help you generate more range and performance.

The schematic graph provides meaningful tips on how to preserve your Tesla’s battery when commuting.

Drive slow

Driving at a comfortable speed is beneficial in all weather, but driving slowly has an additional advantage in cooler temperatures.

Because cold air is thicker, aerodynamic resistance is higher in the winter; going slower helps minimize drag and so provides a few additional kilometers on your battery.

Remove any unneeded weight

No, we’re not saying kick your fat friends out!

Any work you do to reduce aerodynamic resistance will build up over time, providing you with more kilometers while using the same battery capacity.

Removing unneeded luggage reduces the burden that must be handled, which would otherwise necessitate more power to drive the car. This includes removing luggage racks, back (bicycle) racks, and bars while not in use.

Only use the Supercharger when absolutely essential

Low-power home chargers recharge the battery at rates ranging from 7 to 40 miles an hour. A Tesla 3.0 supercharger can recharge at rates of up to 1000 miles per hour.

Tesla recommends recharging your Tesla more often using a low-power charger at work or at home since it is healthier for the Lithium-ion battery.

For ideal lithium-ion battery life, use powerful DC chargers (such as superchargers) only when absolutely necessary, such as on long-distance journeys.

Adopt a charging routine

Using a low-power charger and charging your Tesla on a daily basis helps preserve battery health and allows it to function more effectively.


In this article, we looked at how to know if a Tesla battery is bad (how to check and tips for good battery health).

An automobile is a significant investment, and Teslas are not inexpensive. These recommendations will help you increase the driving range of your Tesla as well as improve its performance.