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CR2040 Battery (Discontinued) – Use CR2032 or CR2450

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CR2040 Battery (Discontinued) – Use CR2032 or CR2450

Original price was: $8.99.Current price is: $2.43.

Lithium Batteries CR2040 3 Volt Coin Cell

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Check the match before ordering

  • Part numberMatch the complete number, including letters and suffixes.
  • Electrical specificationConfirm voltage, chemistry and charging requirements.
  • Physical fitCompare dimensions, connector, polarity and terminal position.
SKU
CR2040
Brand
N/A
Category

Description

CR2040 Battery Replacement

This battery is no longer available.

You can use a (same diameter, thinner) or a (wider and thicker) instead.

(Thinner Option): Measures 20mm x 3.2mm. It will fit into the slot, but you may need to fold a small piece of aluminum foil or cardboard behind it to ensure the metal contacts touch securely.

(Thicker Option): Measures 24.5mm x 5.0mm. It is thicker and wider. It will only work if your device uses flexible spring clips rather than a molded plastic slot.

3 Volt Lithium CR2040 – No Longer Available

FAQs

Q: Is the CR2040 battery discontinued?
A: Yes. The 3V CR2040 lithium coin cell (20 mm x 4.0 mm) is no longer available.

Q: What can I use instead of a CR2040?
A: A has the same 20 mm diameter but is thinner (3.2 mm), so you may need a small shim to keep contact. A is wider and thicker (24.5 mm x 5.0 mm) and only works if your device uses flexible spring clips.

Additional information

Brand

N/A
Product Type

Other
Product Name + Part Number

CR2040 Battery (Discontinued) – Use CR2032 or CR2450

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Ordering guidance

A reliable replacement starts with an exact match

Similar-looking batteries and accessories can use different voltage, chemistry, connectors or polarity. Verify the label and physical fit before purchase.

View the battery matching guide
Is matching the voltage enough?

No. Chemistry, dimensions, connector type, polarity, terminal position and charging requirements must also match.

Which number should I compare?

Use the complete model or part number printed on the original item. Include every prefix, suffix, dash and revision where shown.

What if my device model is not listed?

Do not assume compatibility from appearance alone. Compare the original part number and specifications or confirm the requirements in the device documentation.

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