When life happens, parts can be lost or damaged. We have all your needs covered for official Aimpoint® replacement parts ensuring your optic is always ready when you are. The battery life of Aimpoint® sights is measured in years. Many Aimpoint® products achieve 8 to 10 years constant-on with one battery. Nevertheless, check the battery in the sight occasionally during the years of use, to avoid leakage that can be harmful to the sight. We recommend the use of lithium batteries. If you are looking for a battery to your Aimpoint® sight, check the page for this particular product.