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- Proprietary cathode system;Resealable package;Versatile and powerful
Duracell Optimum batteries have a proprietary cathode system that can deliver Extra Power in some devices, or Extra Life in other devices, vs Coppertop AA/AAA, in a wide range of devices. Optimum Batteries are packaged in a slider pack with a resealable storage tray, that provides a more organized way to store your batteries.
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