- Duracell Specialty alkaline MN21 batteries - long-lasting power guaranteed
- Guarantee for 5 years in storage with Duralock Power Preserve Technology
- Duracell Specialty batteries are available in a variety of sizes: J, N, AAAA, MN21, MN11, MN30
- Duracell Specialty alkaline MN21 batteries are designed for use in wireless remote controls, wireless doorbells and security systems (alarms, locators)
Duracell offers a wide range of specialty, button and coin batteries to power a wide range of devices, from electronics to medical devices and small toys.
Long Lasting Power, Guaranteed
The trusted Duracell quality is also available for all your coin, button and specialty batteries.
Easy to find right size
Quickly find the correct battery size for your device by checking the large battery size numbers on pack.
Did you know that most batteries lose power over time, even when not in use? Duracell's DuralockTM technology preserves batteries' power in storage before being used, guaranteed.*
*Up to 10-year guarantee for lithium coin and high power lithium batteries. Up to 5-year guarantee for specialty alkaline batteries. Up to 3-year guarantee for silver oxide button batteries.