Have you ever had any power outages where you live and been unable to open up the garage door to get your vehicle out? If you have, then you know just how important it is to have a backup battery available for your garage door opener. Having one of these batteries can provide some excellent benefits, and it can help to save lives. There are some places where it’s not just a good idea to have a backup, but it is also the law. Let’s get a closer look.