A car battery can last up to 10 years under optimal conditions, but typically lasts between 3 to 5 years. Its lifespan depends on factors like driving habits, climate, and maintenance. Frequent short trips, extreme temperatures, or leaving lights on can drain the battery more quickly. As it ages, you may notice slower engine cranks, dim headlights, or a dashboard warning light—signs the battery could be failing.

To avoid being stranded, it’s important to test your battery annually after three years, especially if you live in harsher climates. If you’re unsure, a mechanic can perform a quick check to see if replacement is needed. Staying on top of battery maintenance helps prevent unexpected breakdowns on the road.