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Energizer Silver Oxide Coin Cell Batteries (390/389)

£299
The RRP is the manufacturer's recommended retail price of the item.
410 In Stock - Ready to Ship
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Minimum order for this item is 10.

Description

This is an Energizer 390/389 silver oxide coin cell, sold on its own rather than as a pack. The cell is printed with both of its reference numbers and with a plus mark on the positive face, so it can be matched against the number on the cell coming out of a device or the one quoted in a manual. Silver oxide chemistry gives a nominal 1.55V, and it is the chemistry small precision movements are usually designed around, because the voltage it delivers stays close to that figure for most of the working life rather than sliding down steadily.

Coin cells of this size and chemistry are what wristwatches, small calculators, key fobs, pocket instruments and similar low drain electronics are built to take. The number matters more than the brand: two cells that look alike on a workbench can differ in height by a fraction of a millimetre and will not seat properly. Read the code off the old cell first, or off the inside of the battery hatch, and order against that. Keeping a few spares in a drawer is sensible in a household with several watches, since the one that stops is rarely the one you planned for.

We price and sell this cell individually, and the minimum order is ten, rising in multiples of ten from there, so one order gives you ten separate cells to draw on. That suits a watch repairer, a workshop, or anyone who would rather not chase a replacement each time one runs down. Energizer specialist cells sit alongside our other Energizer batteries, including alkaline coin cells and the common AA, AAA, C, D and 9V sizes. The manufacturer does not print a shelf life figure for this cell, so we quote none.

Specification
Size Coin cell
Chemistry Silver oxide
Voltage 1.55V
Codes 390/389
Pack quantity Single cell
Sold as Priced and sold per cell
Minimum order 10, sold in multiples of 10
Frequently Asked

Why does it carry two numbers, 390 and 389?

Both references are printed on the cell itself, so if your watch back, manual or old battery quotes either 390 or 389, this is the one to order against.

How many cells do I actually receive?

This listing is priced and sold per cell, so one unit is one cell. The minimum order is ten units, in multiples of ten, which brings ten individual cells.

What voltage does it give, and can it replace a 3V lithium coin cell?

Silver oxide gives a nominal 1.55V. It is not a substitute for a 3V lithium coin cell such as a CR type, so match the chemistry your device asks for.

Can I fit an alkaline cell of a similar size instead?

Alkaline coin cells exist in comparable sizes, but their voltage falls away more across the working life, which is why watch movements usually specify silver oxide.

Which way round does it sit in the holder?

The printed face carrying the codes and the plus mark is positive, and in most holders it seats facing the cover. Check the marking inside the battery compartment.

Shipping & Returns

Delivery We deliver across the UK and to most countries worldwide.

  1. UK: free delivery on orders over £99, and £14.99 below that.
  2. Niori lighting: free worldwide delivery on orders over £99, with import duties and taxes included, so there's nothing to pay on arrival.
  3. Other brands: the delivery cost to your country is shown at checkout, before you pay. Some large items are for UK delivery only, and their pages say so.
  4. Import duties and taxes on other brands may be charged on arrival and are paid by the recipient, but we always do our best to keep these as low as possible for you.
  5. Large items, such as Christmas trees and light-up figures, are UK delivery only, with a set charge per order (£59.99 by courier or £119.99 by pallet), shown on their page and at checkout.

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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Ordering with us

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Free UK delivery on orders over £99. We deliver this piece within the UK only. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

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    Description

    This is an Energizer 390/389 silver oxide coin cell, sold on its own rather than as a pack. The cell is printed with both of its reference numbers and with a plus mark on the positive face, so it can be matched against the number on the cell coming out of a device or the one quoted in a manual. Silver oxide chemistry gives a nominal 1.55V, and it is the chemistry small precision movements are usually designed around, because the voltage it delivers stays close to that figure for most of the working life rather than sliding down steadily.

    Coin cells of this size and chemistry are what wristwatches, small calculators, key fobs, pocket instruments and similar low drain electronics are built to take. The number matters more than the brand: two cells that look alike on a workbench can differ in height by a fraction of a millimetre and will not seat properly. Read the code off the old cell first, or off the inside of the battery hatch, and order against that. Keeping a few spares in a drawer is sensible in a household with several watches, since the one that stops is rarely the one you planned for.

    We price and sell this cell individually, and the minimum order is ten, rising in multiples of ten from there, so one order gives you ten separate cells to draw on. That suits a watch repairer, a workshop, or anyone who would rather not chase a replacement each time one runs down. Energizer specialist cells sit alongside our other Energizer batteries, including alkaline coin cells and the common AA, AAA, C, D and 9V sizes. The manufacturer does not print a shelf life figure for this cell, so we quote none.

    Specification
    Size Coin cell
    Chemistry Silver oxide
    Voltage 1.55V
    Codes 390/389
    Pack quantity Single cell
    Sold as Priced and sold per cell
    Minimum order 10, sold in multiples of 10
    Frequently Asked

    Why does it carry two numbers, 390 and 389?

    Both references are printed on the cell itself, so if your watch back, manual or old battery quotes either 390 or 389, this is the one to order against.

    How many cells do I actually receive?

    This listing is priced and sold per cell, so one unit is one cell. The minimum order is ten units, in multiples of ten, which brings ten individual cells.

    What voltage does it give, and can it replace a 3V lithium coin cell?

    Silver oxide gives a nominal 1.55V. It is not a substitute for a 3V lithium coin cell such as a CR type, so match the chemistry your device asks for.

    Can I fit an alkaline cell of a similar size instead?

    Alkaline coin cells exist in comparable sizes, but their voltage falls away more across the working life, which is why watch movements usually specify silver oxide.

    Which way round does it sit in the holder?

    The printed face carrying the codes and the plus mark is positive, and in most holders it seats facing the cover. Check the marking inside the battery compartment.

    Shipping & Returns

    Delivery We deliver across the UK and to most countries worldwide.

    1. UK: free delivery on orders over £99, and £14.99 below that.
    2. Niori lighting: free worldwide delivery on orders over £99, with import duties and taxes included, so there's nothing to pay on arrival.
    3. Other brands: the delivery cost to your country is shown at checkout, before you pay. Some large items are for UK delivery only, and their pages say so.
    4. Import duties and taxes on other brands may be charged on arrival and are paid by the recipient, but we always do our best to keep these as low as possible for you.
    5. Large items, such as Christmas trees and light-up figures, are UK delivery only, with a set charge per order (£59.99 by courier or £119.99 by pallet), shown on their page and at checkout.

    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.