CopperTop Batteries, DuraLock Power Preserve Alkaline, 1.5 V, D

Features: Features Duralock Technology to provide advanced performance in popular battery powered devices and guaranteed to stay powered for up to 10 years in storage | Date coded to ensure freshness | Lasts up to 10 times longer than super heavy duty and carbon zinc batteries in power demanding applications | Mercury-free and designed for intermittent use