What is the shelf life on the power One zinc p312?

Manufacture date is needed on every -front of package- mandatory hearing aid battery mfg i have found dates Oct 2018 still selling here on amazon, today 1/31/2021 .. this is unacceptable we all want to purchase new batteries for best shelf life and overall wearer - performance.

The voltage on these is 1.45v. I've had good luck with these and are certainly less expensive than over the counter batteries.

will these fit HEARusa hearing aids?

Based on the information found for the HEARusa hearing aids, they take size 312. Therefore these batteries will work.

These are size 13 batteries. We do carry size 312A batteries if searched using the following product identifier: B00SJPHZCO.

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🔊 Stay connected, stay confident — Powermax keeps you hearing your best!

COMPLIANT SECURE - Child-safe packaging meets Reese’s Law standards, combining safety with convenience.
SAFE SUSTAINABLE - Made with premium zinc, free from harmful cadmium and mercury—good for you and the planet.
CRYSTAL CLEAR SOUND - Advanced Zinc Air technology ensures consistent, high-quality audio clarity all day long.
EFFORTLESS HANDLING - Yellow tab design for easy peel-and-use, perfect for on-the-go professionals.
POWER THROUGH YOUR DAY - 64 long-lasting Size 10 batteries keep your hearing aids energized without interruption.

Powermax Size 10 Hearing Aid Batteries offer 64 premium zinc air cells delivering reliable 1.4V power. Designed for frequent users and professionals, these eco-friendly, cadmium and mercury-free batteries provide consistent sound clarity and easy handling with yellow tabs. Packaged securely to meet child safety regulations, they ensure long-lasting performance and peace of mind.

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Product Name	Powermax Hearing Aid Batteries
Units	64 count
Serving Recommendation	Count of 64
Brand	Powermax
Format	Hearing Aid
Age Range Description	Adults
Country of origin	China

PowermaxSize 10 Hearing Aid Batteries, Yellow Tab, Made In The Usa, 64 Count

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