What good is a great, state-of-the-art product without a great warranty? The StarterGuard® Failsafe Battery System has been designed to perform flawlessly. Therefore, it is guaranteed for a full 2 years and unlimited mileage from the date of purchase! If StarterGuard® fails to perform according to the way it was designed within the warranty period, simply return it to us and we’ll send you a new one. If you purchased the product from a dealership or retailer return it to them for a full product replacement.