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Energizer 379 Silver Oxide Button Cell Batteries (10 Pack)

£149
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Description

The Energizer 379 is a 1.55V silver oxide button cell battery supplied in a 10-pack. The battery measures 24mm diameter by 5mm height and uses silver oxide chemistry to deliver stable voltage output across the battery's discharge cycle, making it suitable for devices that require consistent power rather than tolerance for voltage drop.

Designed for watches, keyless entry systems, medical devices such as glucose meters and hearing aids, compact calculators and digital thermometers, the 379 maintains a flat discharge curve until the battery is nearly depleted. This contrasts with alkaline button cells, which show gradual voltage decline from the start. The stable output means devices calibrated to operate within a narrow voltage range continue to function correctly throughout the battery's life.

The leak-resistant construction reduces the risk of battery leakage damaging device internals, particularly relevant in watches and medical equipment where replacement intervals can extend to several years. The extended shelf life when stored at room temperature means the batteries remain usable for several years after purchase, allowing bulk buying without concern for degradation in storage. Each cell is individually marked with the 379 designation and positive terminal indicator for correct installation orientation.

Specification
Weight (KG) 0.01
Width (mm) 5
Height (mm) 24
Depth (mm) 24
Battery Range Energizer Specialist
Cell Size 379
Cell Composition Silver Oxide
Frequently Asked

What devices use a 379 battery?

The 379 is commonly used in analogue and digital watches, keyless entry fobs for cars and gates, medical devices including glucose meters and hearing aids, compact calculators and digital thermometers. Any device specifying a 379, SR521SW or AG0 battery will accept this cell.

Can I use an alkaline equivalent instead?

Alkaline button cells of the same physical size exist but deliver declining voltage from the start of their discharge cycle. Devices calibrated for silver oxide's stable 1.55V output may malfunction or show inaccurate readings if powered by an alkaline alternative, particularly medical devices and precision watches.

How long do these batteries last in storage?

Silver oxide button cells maintain charge for several years when stored at room temperature in their original packaging. The exact shelf life depends on storage conditions, but Energizer specialist batteries typically retain usable charge for 3-5 years from manufacture date when kept dry and away from extreme temperatures.

Are these batteries rechargeable?

No. The 379 is a primary (single-use) battery. Attempting to recharge a silver oxide button cell can cause leakage, rupture or venting. Once depleted, the battery should be disposed of according to local battery recycling regulations.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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    Description

    The Energizer 379 is a 1.55V silver oxide button cell battery supplied in a 10-pack. The battery measures 24mm diameter by 5mm height and uses silver oxide chemistry to deliver stable voltage output across the battery's discharge cycle, making it suitable for devices that require consistent power rather than tolerance for voltage drop.

    Designed for watches, keyless entry systems, medical devices such as glucose meters and hearing aids, compact calculators and digital thermometers, the 379 maintains a flat discharge curve until the battery is nearly depleted. This contrasts with alkaline button cells, which show gradual voltage decline from the start. The stable output means devices calibrated to operate within a narrow voltage range continue to function correctly throughout the battery's life.

    The leak-resistant construction reduces the risk of battery leakage damaging device internals, particularly relevant in watches and medical equipment where replacement intervals can extend to several years. The extended shelf life when stored at room temperature means the batteries remain usable for several years after purchase, allowing bulk buying without concern for degradation in storage. Each cell is individually marked with the 379 designation and positive terminal indicator for correct installation orientation.

    Specification
    Weight (KG) 0.01
    Width (mm) 5
    Height (mm) 24
    Depth (mm) 24
    Battery Range Energizer Specialist
    Cell Size 379
    Cell Composition Silver Oxide
    Frequently Asked

    What devices use a 379 battery?

    The 379 is commonly used in analogue and digital watches, keyless entry fobs for cars and gates, medical devices including glucose meters and hearing aids, compact calculators and digital thermometers. Any device specifying a 379, SR521SW or AG0 battery will accept this cell.

    Can I use an alkaline equivalent instead?

    Alkaline button cells of the same physical size exist but deliver declining voltage from the start of their discharge cycle. Devices calibrated for silver oxide's stable 1.55V output may malfunction or show inaccurate readings if powered by an alkaline alternative, particularly medical devices and precision watches.

    How long do these batteries last in storage?

    Silver oxide button cells maintain charge for several years when stored at room temperature in their original packaging. The exact shelf life depends on storage conditions, but Energizer specialist batteries typically retain usable charge for 3-5 years from manufacture date when kept dry and away from extreme temperatures.

    Are these batteries rechargeable?

    No. The 379 is a primary (single-use) battery. Attempting to recharge a silver oxide button cell can cause leakage, rupture or venting. Once depleted, the battery should be disposed of according to local battery recycling regulations.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.