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While Teslas are best known for their high-voltage lithium-ion drive batteries, each model also relies on a low-voltage auxiliary battery to power essential functions like lights, door locks, and onboard electronics. If you've received a battery warning on your screen or noticed unusual electrical behavior, it may be time to replace your Tesla’s auxiliary battery.
Want to learn more about why electric vehicles like Teslas still depend on low-voltage batteries? Check out our blog, "Why EVs Still Use Lead Batteries? ".
Not sure what your vehicle requires? Use our battery fitment finder to check compatibility by model and year, or explore our guide, "How Do I Know Which Car Battery Fits My Car? ", for help choosing the right option.
In addition to auxiliary batteries, we offer a selection of lighting products and accessories that help support your Tesla's functionality and appearance. Whether you’re upgrading your interior lights or replacing a headlight bulb, you’ll find reliable solutions at your local Batteries Plus.
Visit our Automotive Center to see everything we carry for Tesla and other electric vehicles.
We carry high-quality low-voltage batteries from trusted names like Duracell Ultra and X2Power, built to meet the demands of today's electric vehicles. Many of our batteries are backed by a free replacement warranty and supported by expert in-store guidance at over 700 locations nationwide.
Yes. Most Teslas are equipped with a 12-volt auxiliary battery to power systems like lights, sensors, and locks. Some newer models have transitioned to a 16-volt lithium version. This battery works independently from the high-voltage drive battery.
Tesla auxiliary batteries generally last 3 to 5 years. If your vehicle displays a low-voltage battery warning or starts behaving oddly when parked, it's a good idea to have the battery inspected and replaced if needed.