There are a few reasons why your Tesla might make noise when charging.
- The cooling fans. While charging, the battery pack in a Tesla car can generate heat, and the cooling fans help to regulate the temperature. The fans may turn on and off intermittently, which can create a humming or whirring sound.
- The high voltage contactors. These are the switches that connect the battery to the charger. When they close, they can make a clicking sound.
- The battery expanding. When the battery is cold, it can contract. As it warms up during charging, it can expand. This can cause a popping or gurgling sound.
- The electrical current flowing through the battery. When the battery is charging, a significant amount of electrical current flows through it. This can create a humming or buzzing sound.
In general, these noises are normal and nothing to worry about. However, if you notice any unusual noises, such as a loud banging or screeching, you should contact Tesla customer support for help.
Here are some additional tips to reduce the noise your Tesla makes when charging:
- Charge in a cool environment. The colder the environment, the more the battery will contract, which can cause more noise.
- Use a dedicated circuit for charging. This will help to prevent the charger from overloading the circuit and causing the fans to work harder.
- Avoid using extension cords. Extension cords can cause voltage drop, which can make the charger work harder and create more noise.
I hope this helps!