Batteries are a huge part of modern life. How many battery chargers do you have around? We’ve got a box full of them. Of course, we’re here to talk about your car battery. When people come into our tempe auto repair shop and need a new battery, they’re really not that happy about having to spend the money. But the fact is, 70% of batteries don’t last four years, but there are some things you can do to extend the life of your battery.