OEM Duracell Alkaline General Purpose batteries provide long-lasting, reliable power for essential devices in your business. These Coppertop batteries are commonly used in flashlights, portable electronics, remotes, calculators, smoke alarms, door locks, cameras, and wireless mice/keyboards. Featuring DuraLock Power Preserve Technology, they are guaranteed fresh for 10 years in storage, ensuring you have the power you need when you need it. Each pack contains 8 size D batteries.