Most garage door batteries will last between 3-5 years. However, the actual lifespan of a garage door battery depends on a number of factors, including how often the garage door is used, the weather conditions in your area and the type of battery you have. If you live in an area with extreme temperatures (hot or cold), your battery may not last as long as someone who lives in more moderate conditions. Additionally, if you have a standard lead-acid battery, it will likely need to be replaced more often than someone with a maintenance-free sealed lead-acid battery.