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Twenty-four silver oxide button cells in blister packaging

DURACELL

DURACELL 364 / SR621SW Silver Oxide Button Batteries 24-Pack

SKU CH-921E-FTG3G

Pack of 24 silver-oxide 1.55 V button cells sized 6.8 mm by 2.1 mm for watches and small devices

  • Battery type364
  • 24 batteries per pack keep devices running longer
  • Silver oxide chemistry delivers steady 1.55 V output
  • Compact 6.8 mm x 2.1 mm size fits slim compartments
  • Replaces 364, SR621SW, LR620 and many equivalents
  • Trusted Duracell brand for reliable everyday power

24-pack silver oxide button cells

This pack contains 24 Duracell 364 / SR621SW silver oxide button batteries. Each cell delivers a steady 1.55 V output. The silver oxide chemistry provides stable voltage for precision devices. They are suited for watches, calculators and small medical instruments.

Check device size and voltage needs

Verify that your device accepts a 6.8 mm diameter and 2.1 mm thick cell. Confirm the required voltage is 1.55 V before ordering. Cross-reference the model numbers listed such as SR621SW, 364, LR60 or SR60 to ensure compatibility. Using an incorrect size or chemistry can damage the equipment.

Ready for immediate use in compact electronics

The batteries arrive new and ready to install without charging. Their compact dimensions fit tight compartments in watches, key fobs and glucose meters. Silver oxide chemistry frees you from frequent replacements by holding voltage longer than alkaline alternatives. The 24-count pack keeps spares on hand for multiple devices.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $60.99
Pricier than about 90% of the 10,440 comparable items (median $10.99).

Specifications

Power
Battery type364

Questions about this item

What comes in the pack and is any tool or holder included?

The pack contains 24 silver-oxide button cells, each measuring 6.8 mm by 2.1 mm. No tool, holder or extra accessory is supplied.

Should I choose the 364 or one of the other listed equivalents such as SR621SW or LR621?

All codes refer to the same 1.55 V silver-oxide chemistry and 6.8 mm x 2.1 mm size; pick whichever code matches the marking on your device or its manual.

How long will the 1.55 V output last in a typical watch or calculator?

Silver-oxide chemistry holds a steady 1.55 V through most of its life, so a device drawing micro-amps can run for months to a few years on one cell.

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