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A small cardboard box holding twelve silver oxide button batteries with a metallic finish

DURACELL

DURACELL 364 / SR621SW Silver Oxide Button Battery Box of 12

SKU CH-FVWG-ZGZE8

Pack of 12 silver-oxide 364 / SR621SW button cells delivering 1.55 V in a 6.8 mm x 2.1 mm size

  • Battery type364
  • Silver oxide chemistry delivers stable 1.55 Volt output
  • 12 batteries in one box keeps spares ready
  • 8 mm diameter fits slim watch cases
  • 1 mm height suits low-profile compartments
  • Replaces 364, SR621SW and many cross-reference codes

12-pack silver oxide button cells

This pack contains twelve Duracell 364/SR621SW silver oxide button batteries. Each cell delivers a steady 1.55 volt output suited to watches, calculators and small medical devices. The silver oxide chemistry provides stable voltage throughout the discharge cycle. Buyers needing rechargeable cells or higher capacity formats should look elsewhere.

Thermals noise and power draw

Silver oxide button cells generate negligible heat and operate silently in normal use. Their low self-discharge rate means they retain charge during long storage periods. No active cooling or power management is required for these primary cells. High-drain applications that demand continuous high current are not a good fit.

Direct replacements and upgrade value

These batteries replace common equivalents including LR60, SR621SW, 364A, V364 and GP364 references. The 6.8 mm by 2.1 mm dimensions match standard 364/SR621SW compartments exactly. Upgrading from alkaline LR620 types yields longer service life and flatter voltage curves. Devices requiring lithium chemistry or different physical sizes cannot use these cells.

How it compares

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

Price $28.99
Pricier than about 84% of the 10,440 comparable items (median $10.99).

Specifications

Power
Battery type364

Questions about this item

How do I install the 364 / SR621SW silver oxide button cell and what step is often missed?

Align the positive side marked 1.55 V facing the contact indicated by the device, then press the 6.8 mm x 2.1 mm cell firmly until it clicks; the step often missed is checking polarity before closing the compartment.

What maintenance or replacement will the 364 / SR621SW pack need later?

Each 364 cell is single-use; when a watch or calculator shows low-power symptoms, replace the depleted button with a fresh 364 / SR621SW from the 12-piece box.

What limit appears first under sustained use of the 364 / SR621SW silver oxide button?

The 1.55 V output gradually declines as the silver oxide chemistry depletes, ending useful life when voltage drops below the device's minimum operating threshold.

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