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These are size 312 zinc-air button cells for hearing aids, sold as a 48-pack. The brown tab marks the 312 size and gives you a longer strip to grip, which helps when swapping cells with shaky hands. They are mercury-free and the packaging is certified child-resistant. Zinc-air cells activate when the tab is peeled and air reaches the cell, so they run down once opened even if unused. Against rivals, the long tab and leak-resistant build are the selling points; expect typical zinc-air runtime rather than anything longer.
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Lowest price we've seen: $15.80 on Nov 14 at Amazon; highest $39.95 on Nov 5. Tracked across 2 stores since Nov 5.
These are size 312 zinc air hearing aid batteries with brown tabs. Each pack contains 48 batteries. The cells are mercury-free and have a leak-proof design that helps prevent damage to hearing devices.
The long brown tabs make the batteries easy to handle and identify. The batteries hold power for up to 4 years in storage. For best results, let a new battery sit un-tabbed for one minute before inserting it into the device.
The packaging is child-resistant and certified to CPSC 16 CFR PART 1700.20 (August 2023).
