Energizer CR2430 Lithium Coin Batteries - 2 Pack

The CR2430 is a 3 volt lithium coin cell, and this listing brings two of them on a single retail card. Each cell is a plain silver disc with the code and the voltage printed on its face, so the one you fit can always be checked against the one you removed. The code is the whole specification: a coin cell is identified by its own number rather than by a size name, which is why CR2430 appears on the cell, on the card and in the title of this page.

Lithium is the reason a cell this small holds a useful charge. The chemistry gives a nominal 3 volts, twice what an alkaline button cell of similar proportions delivers, and it holds that voltage steadily rather than sagging gradually as it drains. Lithium also copes well with cold and loses very little charge while sitting unused, which matters in anything that draws a trickle for years at a time. What it does not do is substitute for a 1.5 volt cell. If the cell you have taken out carries an LR or SR code, a CR2430 is not a replacement for it, whatever the physical fit suggests.

Two cells come sealed on one blister card, which keeps the spare in its pack until you need it. We sell this listing in multiples of ten cards, so a minimum order brings twenty cells, which suits a workshop, a service desk or anyone who fits the same cell repeatedly. It sits alongside our wider range of Energizer cells, which includes the CR1216, CR1220 and CR2032 lithium coins as well as the AA, AAA, C, D and 9V alkaline sizes. If you are ordering for a drawer rather than a single job, buying the sizes together saves working out the codes twice.

How do I check that CR2430 is the right cell for my device?

Take the old cell out and read the code printed on its face. Coin cells are identified by that code alone, so a CR2430 replaces a CR2430 and nothing else.

What does the CR2430 code actually mean?

Under the international designation, CR marks a lithium chemistry, the first two digits give the cell diameter in millimetres and the last two give the height, so roughly 24.5mm across and 3.0mm thick.

Can I fit a CR2032 instead, since both are 3 volt lithium coins?

No. The numbers describe the physical size, and a 2032 is a narrower disc than a 2430. The voltage matches but the fit in the holder and the contact pressure will not.

Is this cell rechargeable?

No. Neither the specification nor the pack marks it as rechargeable, and a lithium coin meant for charging carries a different code. Treat it as single use and keep it out of a charger.

How many cells does a minimum order bring?

Each card holds two cells and this listing is sold in multiples of ten cards, so the smallest order you can place brings twenty cells in total.