JCB CR2025 Lithium Coin Cell Batteries

This is a single JCB CR2025 lithium coin cell, rated at 3V, with the code and the voltage printed on the face of the cell itself. Lithium is the chemistry used where a cell has to sit quietly in a device for a long stretch and still deliver a steady voltage when it is called on, which is why it is the usual choice for small electronics rather than an alkaline button cell. The CR2025 marking is a measurement as well as a chemistry: under the IEC naming convention the four digits give the size, so this cell is 20mm across and 2.5mm thick. A CR2032 is the same diameter but 3.2mm deep, and in a shallow holder the two are not interchangeable.

Cells this size turn up in car key fobs and alarm remotes, slim wristwatches, kitchen scales, calculators, fitness trackers, digital thermometers and the small clock battery on a computer motherboard. The surest check before ordering is to take the old cell out and read the code stamped on its top face, because a device manual will often list several codes it will accept. Fit the new one with the plus side facing the way the old one sat, and keep spares in the card until you need them.

One unit of this listing is one cell on its own hanging card, so you receive a single battery for each unit you order. The minimum order is 10, sold in multiples of 10, which suits a drawer of household spares or a workshop keeping the common sizes to hand. JCB does not print a shelf life figure on this pack, so we do not quote one. We stock other JCB cells alongside this one, including CR2016 and CR2032 lithium coin cells, LR44 coin cells, and AA, AAA and 9V sizes, so one order can cover most of what a house gets through in a year.

Can I use a CR2032 instead?

Not always. A CR2032 shares the 20mm diameter but stands 3.2mm tall against 2.5mm, so it can jam a shallow holder or strain the contact. Fit the code your device asks for.

How many cells do I receive?

One cell per unit ordered, on its own hanging card. The minimum order is 10 units, sold in multiples of 10, so the smallest purchase is ten cells.

What voltage does it give?

3V, printed on the face of the cell and on the front of the card. That is the nominal voltage for every lithium coin cell in the CR family.

Which devices take a CR2025?

Car key fobs, alarm and garage remotes, slim watches, kitchen scales, calculators, fitness trackers, digital thermometers and the clock cell fitted to many computer motherboards.

Does the pack state a shelf life?

No. JCB prints no shelf life figure on this card, so we do not quote one. Keep cells in their packaging, away from loose metal, until you need them.

How do I fit it the right way round?

The face marked with a plus and the CR2025 code is the positive side, and it normally faces up, matching the way the old cell sat in the holder.