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The Energizer EN91 is an industrial-grade AA alkaline cell built for fleets, facilities and high-volume users rather than casual households. Its zinc-manganese dioxide chemistry works from 0°F to 130°F and holds up to 80% of its charge for 10 years at room temperature, so stock sits safely in a toolbox or warehouse. The cells ship in six inner boxes of four, which keeps partial packs sealed and organized. Against retail AA alkalines, it trades fancy packaging and leak warranties for bulk convenience and temperature tolerance.
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Buyers rate the EN91 highly, with 60 ratings averaging 4.9 out of 5. Owners treat it as a dependable bulk AA for tools, remotes and flashlights, and the split inner boxes get frequent mention.
Energizer EN91 Industrial AA batteries are 1.5V alkaline cells with a Zinc-Manganese Dioxide (Zn/MnO2) chemistry. AA is one of the most commonly used battery sizes. These cells work in high-performance devices such as LED flashlights and digital cameras, and in lower-demand electronics such as remote controls and calculators.
The chemistry operates in both hot and cold temperatures, from 0°F to 130°F (-18°C to 55°C). Shelf life is up to 10 years at 21°C, at 80% of initial capacity. The batteries are mercury and cadmium free.
The 24-pack box holds 6 smaller boxes of 4 cells each. This lets you carry or store a few cells at a time.
