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Rayovac Extra Advanced Hearing Aid Batteries, 42 Size 312 + Battery Holder Keychain Kit (42 Batteries) - Walmart.com
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Rayovac Mercury Free Proline Advanced Size 312 Hearing Aid Batteries, Total of 96 Batteries - Walmart.com
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Power One Evolution Size 312 Hearing Aid Batteries - 1.45V Zinc Air with Improved Battery Life (6 Batteries) - Walmart.com
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