Energizer CR2016 Lithium Coin Batteries - 2 Pack

The CR2016 is a 3V lithium coin cell, and one card gives you two of them. Both the card and the cells carry the 3V marking, so there is no guessing once a pack is opened. Lithium is what makes a cell this thin worth fitting: the chemistry holds its charge in storage for years rather than months, and it keeps voltage close to the rated 3V for most of its working life instead of fading slowly, so a device keeps working properly until the cell is genuinely done.

These are the cells behind the small screw or slide covers in car key fobs, alarm and garage remotes, slim calculators, digital thermometers, kitchen scales, watches and fitness trackers. Read the code carefully before ordering, because coin cells look alike in the hand. Under the IEC naming standard the digits are a measurement: a CR2016 is 20mm across and 1.6mm thick, while a CR2032 is the same diameter and twice as thick. A thicker cell will not let a CR2016 holder close, so match the code stamped inside the compartment or printed in the manual. If a device takes two cells stacked together, a two pack covers it in one purchase.

One unit of this listing is a single card holding two cells, and the minimum order is 10 cards in multiples of 10, which is 20 cells. Leave spares in the blister until you need them, because loose coin cells can short against keys or coins. The pack carries the child safety icon, and that warning is the serious one: a swallowed lithium coin cell needs immediate medical help, so keep spares well out of reach. Alongside these we stock other Energizer coin cells including CR2032, CR1620, SR626 and LR43, plus alkaline AA, AAA, C, D and 9V cells.

Can I fit a CR2032 instead of a CR2016?

No. Both are 20mm across, but the CR2032 is 3.2mm thick against the CR2016's 1.6mm, so it will not sit under a CR2016 cover. Always fit the code the device asks for.

What sort of devices take a CR2016?

Typically car key fobs, alarm and garage remotes, slim calculators, watches, fitness bands, digital thermometers and kitchen scales. Check the code stamped inside the battery compartment or given in the manual before you order.

Are these rechargeable?

No. A CR coded coin cell is a primary lithium cell, which means it is single use. Never put one in a charger; if you need rechargeable cells, choose a cell sold as rechargeable.

Which way round does the cell go in?

The flat printed face carrying the CR2016 marking is the positive terminal, so it faces the plus sign in the holder. The plain side is negative and usually sits against the spring contact.

How long will one cell last, and how many will I receive?

The manufacturer does not state a runtime, because it depends entirely on what the cell is powering. Each card holds two cells, and the minimum order is 10 cards, so 20 cells in total.