 You're the guy stuck on the side of the road or in the parking lot at 2 o'clock in the morning when it won't start. The industry says four to five years. And AGM batteries, AGM batteries are a funny duck, right? They're a completely different type of battery in a sense. I've seen certain models gobble up batteries every three and a half years, and I've seen certain models go six years. But beyond six years, I'm putting a battery in it. And if I'm changing...