Energizer 364/363 Silver Oxide Coin Cell Battery

The 364/363 is a silver oxide button cell, and the numbers are the whole specification: a 1.55 volt coin cell in the size that quartz watch movements and other small precision electronics are built around. Silver oxide is the chemistry watch repairers tend to ask for, because its output holds close to a flat voltage for most of the cell's working life instead of falling away gradually, which is what a timekeeping circuit wants. Energizer print both reference numbers on the front of the card, so if a caseback or a manual quotes either 364 or 363, this is the cell being asked for.

Cells this size live inside things you open once every few years, so the useful step before ordering is to read the old one. The code is printed on the flat face, and it is worth writing it down before the cell leaves the caseback, because the print is small and easily rubbed off by a thumb. Handle the replacement by its edge rather than its faces; a fingerprint across the contact is grease, and grease is a resistance a coin cell circuit does not need. It sits in our wider range of Energizer cells, which also runs to the 357/303 and 377/376 coin cells, to lithium coin sizes such as CR2032 and CR1220, and to everyday alkaline AA and AAA.

Each unit of this listing is a single cell on its own blister card, priced per cell, and the minimum order is ten, sold in multiples of ten. Ordering a few spares at once is sensible with a size like this. Keep unopened cards away from loose keys and coins, which can bridge the two faces, and keep coin cells out of reach of small children.

How do I check that my watch takes a 364?

Read the number stamped on the face of the old cell, or check the manual. If it quotes 364 or 363, this is the correct size and chemistry.

Is 363 a different battery from 364?

No. Energizer print both codes on the same pack, so a device or manual asking for either reference number is asking for this one cell.

What voltage does it give?

It is a 1.55 volt cell, as printed on the pack. That nominal voltage is standard for silver oxide and is what quartz timekeeping circuits are designed around.

How many cells do I actually receive?

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

My manual quotes a code that is not 364 or 363. Will this fit?

We can only confirm the two references Energizer print on this pack. Other makers use their own numbering, so match against an equivalence chart or the old cell itself before ordering.

Why choose silver oxide rather than an alkaline coin cell?

Silver oxide holds a steadier voltage across its working life, which suits watch movements and small instruments that need consistent accuracy rather than a short burst of power.