Energizer CR2016 Lithium Coin Batteries - 12 Pack

These are Energizer's 2016 lithium coin cells, marked CR2016 on the pack and supplied twelve to a box. Each one gives 3 volts, printed on the pack beside the cell code. The four digits are the measurements: a 2016 is 20mm across and 1.6mm thick, which is the thin coin format rather than the chunkier one, and that thickness is the number that decides whether a cell will sit properly in its holder. Lithium is the chemistry worth having in a coin cell, because it holds a near steady voltage for most of its working life instead of sagging early, and it stands up to cold better than zinc based chemistries.

A 2016 turns up in car key fobs, slim watches, tyre pressure gauges, calculators, digital thermometers, small remote controls and a lot of the electronic gadgets that run on a single flat cell. Before you order, read the code off the old cell or the moulding inside the compartment. A CR2016 and a CR2032 share the same 20mm diameter, so the thicker cell looks like a straight swap and will not close into a 2016 holder. A box of twelve suits a house with several fobs, watches and gadgets to keep going, or a workshop that changes them for customers.

The pack prints a 10 year shelf life, so a box put in a drawer now should still have working cells in it when the last one is needed, and it prints child resistant packaging as well, which matters in a home with young children. One unit of this listing is the box of 12 cells; the minimum order is 32, sold in multiples of 32, so it is a trade quantity rather than a single blister. We stock other Energizer cells alongside it, including CR2032, CR1216 and CR1220 lithium coin cells and the alkaline AA, AAA, C, D and 9V sizes.

How do I check whether my device takes a CR2016 rather than a CR2032?

Read the code stamped on the face of the old cell, or the moulding inside the battery compartment. Both cells are 20mm across, but the 2016 is 1.6mm thick and the 2032 is twice that.

Is 2016 the same cell as CR2016?

Yes, and the pack carries both forms. The CR prefix is the standard designation for a 3 volt lithium coin cell of that diameter and thickness, so the two names describe one cell.

How many cells do I receive, and what is the smallest order?

One unit of this listing is a box holding 12 cells. The minimum order is 32 of those boxes, sold in multiples of 32, which is the trade quantity this line is supplied in.

How long will they keep in a drawer before I need them?

The pack prints a 10 year shelf life. Lithium coin cells lose very little charge while sitting unused, so cells left in their packaging at room temperature stay serviceable for years.

Is the packaging child resistant?

The retail pack states child resistant packaging. It is worth leaving cells in that packaging until the moment you fit them, and keeping loose coin cells well away from young children.

What voltage do these give, and does it fall away as they run down?

Each cell gives 3 volts, as printed on the pack. Lithium holds most of that voltage through its working life rather than tapering early, which suits devices with a low voltage cut off.