Free Delivery on all orders over £99*

Energizer 384/392 Silver Oxide Button Cell Batteries - 1.55V (10 Pack)

£149
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
We are an Independent UK Company
Price match. Found it cheaper? Contact us
Trade Discount Available
Description

The Energizer 384/392 is a silver oxide button cell battery delivering 1.55V output for watches, calculators, key fobs, hearing aids and small medical instruments. Each cell measures 7.9mm diameter by 3.6mm height and uses silver oxide chemistry to maintain consistent voltage throughout the discharge cycle, unlike alkaline equivalents that show gradual voltage drop.

Supplied in a 10-pack, the batteries suit bulk replacement in multi-device households or businesses maintaining stock for watch repairs, hearing aid clinics and calculator fleets. The 384 and 392 designations refer to different industry naming conventions for the same cell size (IEC SR41, Duracell D384/392), so this battery replaces both reference numbers interchangeably.

Silver oxide chemistry gives these cells a flatter discharge curve than alkaline button cells, meaning voltage-sensitive devices like analogue watches maintain accurate timekeeping longer before replacement is needed. The cells carry a leak-resistant seal and retain charge during storage, with typical shelf life of 3-5 years when stored at room temperature away from heat sources.

Each cell weighs approximately 0.01kg and the compact 5mm height fits standard button cell compartments in watches, calculators and remote controls without modification. The packaging carries clear polarity markings and the cells are embossed with voltage and chemistry information on the positive face.

Specification
Weight (KG) 0.01
Width (mm) 5
Height (mm) 24
Depth (mm) 24
Battery Range Energizer Specialist
Cell Size 384
Cell Composition Lithium
Frequently Asked

What devices use 384/392 batteries?

Watches, calculators, key fobs, hearing aids, small medical instruments, laser pointers and some fitness trackers. The 384 and 392 are the same physical cell with different industry reference codes, so this battery replaces both.

What's the difference between silver oxide and alkaline button cells?

Silver oxide cells maintain more consistent voltage as they discharge, which matters for analogue watches and precision instruments. Alkaline button cells show gradual voltage drop and may cause watches to run slow before the battery is fully depleted.

How long do these batteries last?

Runtime depends on the device. In a typical analogue watch drawing 5-10 microamps, expect 1-2 years of continuous use. In higher-draw devices like calculators or hearing aids, runtime is shorter. Shelf life when stored unused is 3-5 years.

Can I use these in place of LR41 alkaline cells?

Physically yes, the dimensions are compatible. However, silver oxide cells provide 1.55V versus 1.5V for alkaline LR41, and the chemistry difference means silver oxide holds voltage more steadily. Most devices designed for LR41 will accept 384/392 and benefit from the more stable output.

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.

See it lit, in person

Lighting looks different in a real room. Come and see our range at our showrooms in Birmingham, Hong Kong and Dubai, or talk to our design team wherever you are.

Niori lighting showroom trailer video with closeups of alabaster lighting

Why Niori

Over 20 years lighting homes worldwide

We are a specialist lighting and mirror retailer with showrooms in Birmingham, Hong Kong and Dubai, shipping to customers around the world. Our own design team is here to help, from first idea to final fitting.

Genuine products

An authorised stockist

Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

Design help

Not sure what you need?

Our design team can help you plan your lighting, share photos and videos of stock, and send samples worldwide. Book a showroom visit in Birmingham, Hong Kong or Dubai, or ask about our lighting design service.

You Might Also Like

Recommended For You

    Our Reviews

    From first click to final installation, our customers share how Niori lights up their spaces. Read their words and envision what’s possible for yours.

    Featured Projects

    Step into our portfolio and see how we transform homes, restaurants, and commercial spaces and more, worldwide. Click here for a closer look at our latest projects.

    Description

    The Energizer 384/392 is a silver oxide button cell battery delivering 1.55V output for watches, calculators, key fobs, hearing aids and small medical instruments. Each cell measures 7.9mm diameter by 3.6mm height and uses silver oxide chemistry to maintain consistent voltage throughout the discharge cycle, unlike alkaline equivalents that show gradual voltage drop.

    Supplied in a 10-pack, the batteries suit bulk replacement in multi-device households or businesses maintaining stock for watch repairs, hearing aid clinics and calculator fleets. The 384 and 392 designations refer to different industry naming conventions for the same cell size (IEC SR41, Duracell D384/392), so this battery replaces both reference numbers interchangeably.

    Silver oxide chemistry gives these cells a flatter discharge curve than alkaline button cells, meaning voltage-sensitive devices like analogue watches maintain accurate timekeeping longer before replacement is needed. The cells carry a leak-resistant seal and retain charge during storage, with typical shelf life of 3-5 years when stored at room temperature away from heat sources.

    Each cell weighs approximately 0.01kg and the compact 5mm height fits standard button cell compartments in watches, calculators and remote controls without modification. The packaging carries clear polarity markings and the cells are embossed with voltage and chemistry information on the positive face.

    Specification
    Weight (KG) 0.01
    Width (mm) 5
    Height (mm) 24
    Depth (mm) 24
    Battery Range Energizer Specialist
    Cell Size 384
    Cell Composition Lithium
    Frequently Asked

    What devices use 384/392 batteries?

    Watches, calculators, key fobs, hearing aids, small medical instruments, laser pointers and some fitness trackers. The 384 and 392 are the same physical cell with different industry reference codes, so this battery replaces both.

    What's the difference between silver oxide and alkaline button cells?

    Silver oxide cells maintain more consistent voltage as they discharge, which matters for analogue watches and precision instruments. Alkaline button cells show gradual voltage drop and may cause watches to run slow before the battery is fully depleted.

    How long do these batteries last?

    Runtime depends on the device. In a typical analogue watch drawing 5-10 microamps, expect 1-2 years of continuous use. In higher-draw devices like calculators or hearing aids, runtime is shorter. Shelf life when stored unused is 3-5 years.

    Can I use these in place of LR41 alkaline cells?

    Physically yes, the dimensions are compatible. However, silver oxide cells provide 1.55V versus 1.5V for alkaline LR41, and the chemistry difference means silver oxide holds voltage more steadily. Most devices designed for LR41 will accept 384/392 and benefit from the more stable output.

    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.