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Duracell Hearing Aid Batteries Size 312 - 6 Pack

£399
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Description

Duracell Size 312 hearing aid batteries use zinc-air chemistry to deliver 1.45V output across a six-cell pack. Each battery is sealed with a protective tab that activates the cell when removed, allowing air to enter the zinc anode and begin the electrochemical reaction. The cells are designed for modern digital hearing aids that require consistent voltage across hours of continuous use.

Size 312 batteries fit behind-the-ear (BTE) and in-the-ear (ITE) hearing aid models that specify PR41 or 312 cell compatibility. The zinc-air design provides higher energy density than silver-oxide or alkaline alternatives at the same physical size, making these cells suitable for hearing aids with digital signal processing, wireless connectivity and directional microphones that draw higher current than older analogue models.

Duracell's Duralock Power Preserve technology allows these batteries to retain charge for up to four years in ambient storage when the activation tabs remain sealed. Once a tab is removed and the cell is exposed to air, the battery begins discharging and should be used within a few weeks for optimal performance. The packaging holds six cells in a dial format that allows individual removal without exposing the remaining cells.

The 312 designation refers to the physical size and voltage standard — these batteries measure approximately 7.9mm diameter and 3.6mm height. The blue colour coding on Duracell 312 cells matches the international standard for this size, making them easier to identify when managing multiple battery sizes for different hearing aid models or users.

Specification
Weight (KG) 0
Width (mm) 44
Height (mm) 90
Depth (mm) 9
Battery Range Duracell Specialist
Cell Size 312
Frequently Asked

How long do Size 312 batteries last in a hearing aid?

Battery life depends on the hearing aid model, usage hours per day, and features in use. Digital hearing aids with Bluetooth streaming typically consume batteries faster than basic amplification. Most users report 3-10 days of use per cell, with streaming or high-volume use toward the lower end of that range.

How do I activate the battery?

Peel the coloured activation tab from the flat side of the battery. Wait 60 seconds before inserting the cell into the hearing aid — this allows air to enter the cell and stabilise the voltage. Inserting immediately after tab removal can cause the hearing aid to register low voltage and shut down.

Can I use these in any hearing aid that takes 312 batteries?

Yes. Size 312 is an international standard (also called PR41). Duracell 312 cells are compatible with all hearing aids specifying 312, PR41 or brown-tab battery requirements, regardless of hearing aid brand.

What happens if I remove the tab but don't use the battery immediately?

Once the tab is removed, the zinc-air cell begins discharging even when not installed in a device. Store activated cells in a cool, dry place and use them within 2-3 weeks. Do not re-seal the tab or store activated cells in airtight containers, as the cell requires air flow to function.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    Duracell Size 312 hearing aid batteries use zinc-air chemistry to deliver 1.45V output across a six-cell pack. Each battery is sealed with a protective tab that activates the cell when removed, allowing air to enter the zinc anode and begin the electrochemical reaction. The cells are designed for modern digital hearing aids that require consistent voltage across hours of continuous use.

    Size 312 batteries fit behind-the-ear (BTE) and in-the-ear (ITE) hearing aid models that specify PR41 or 312 cell compatibility. The zinc-air design provides higher energy density than silver-oxide or alkaline alternatives at the same physical size, making these cells suitable for hearing aids with digital signal processing, wireless connectivity and directional microphones that draw higher current than older analogue models.

    Duracell's Duralock Power Preserve technology allows these batteries to retain charge for up to four years in ambient storage when the activation tabs remain sealed. Once a tab is removed and the cell is exposed to air, the battery begins discharging and should be used within a few weeks for optimal performance. The packaging holds six cells in a dial format that allows individual removal without exposing the remaining cells.

    The 312 designation refers to the physical size and voltage standard — these batteries measure approximately 7.9mm diameter and 3.6mm height. The blue colour coding on Duracell 312 cells matches the international standard for this size, making them easier to identify when managing multiple battery sizes for different hearing aid models or users.

    Specification
    Weight (KG) 0
    Width (mm) 44
    Height (mm) 90
    Depth (mm) 9
    Battery Range Duracell Specialist
    Cell Size 312
    Frequently Asked

    How long do Size 312 batteries last in a hearing aid?

    Battery life depends on the hearing aid model, usage hours per day, and features in use. Digital hearing aids with Bluetooth streaming typically consume batteries faster than basic amplification. Most users report 3-10 days of use per cell, with streaming or high-volume use toward the lower end of that range.

    How do I activate the battery?

    Peel the coloured activation tab from the flat side of the battery. Wait 60 seconds before inserting the cell into the hearing aid — this allows air to enter the cell and stabilise the voltage. Inserting immediately after tab removal can cause the hearing aid to register low voltage and shut down.

    Can I use these in any hearing aid that takes 312 batteries?

    Yes. Size 312 is an international standard (also called PR41). Duracell 312 cells are compatible with all hearing aids specifying 312, PR41 or brown-tab battery requirements, regardless of hearing aid brand.

    What happens if I remove the tab but don't use the battery immediately?

    Once the tab is removed, the zinc-air cell begins discharging even when not installed in a device. Store activated cells in a cool, dry place and use them within 2-3 weeks. Do not re-seal the tab or store activated cells in airtight containers, as the cell requires air flow to function.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.