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How Long Does a Key Fob Battery Last?

Model: (Various brands) Various
Part: Key

The lifespan of a car key fob battery varies based on several factors, including usage frequency, battery type, and key design. Some batteries can last several years inside the fob, while others barely last a year. Generally, a typical key battery lasts around 3 years. The most commonly used model is the CR2032, although in recent years some motorists have considered using rechargeable batteries. To ensure your key fob battery lasts longer, avoid exposing it to extreme temperatures, keep it away from water, and replace the battery as soon as you notice signs of depletion, such as reduced range.

Updated on 28 July 2026 by ScegliAuto

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