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Fifty silver oxide button cells in a blister pack, each 6.8 by 2.1 mm

Renata

Renata 364 / SR621SW Silver Oxide Button Battery 50-Pack

SKU CH-E44Q-PM5BF

A 50-pack of 1.55 V silver-oxide button cells measuring 6.8 mm by 2.1 mm for watches and small electronics

  • Battery type364
  • Reliable 1.55 V output from silver oxide chemistry
  • 50 batteries per pack for long-term supply
  • Fits devices requiring 364 or SR621SW sizes
  • Compact 6.8 mm x 2.1 mm dimensions suit slim designs
  • Replaces LR60, SR60, 621 and many other equivalents

50-Pack Silver Oxide Button Cells

This 50-pack supplies Renata 364 silver oxide button cells rated at 1.55 Volt. They suit watches, calculators and small medical devices that require a stable voltage curve. The quantity covers multiple replacements or professional service kits.

Simple Drop-In Replacement

Installation consists of opening the battery compartment and inserting the cell with the correct polarity. The flat 6.8 mm by 2.1 mm profile fits tight cavities, but the smooth sides can slip during placement. Using non-conductive tweezers prevents shorting and avoids fingerprint contamination on the contacts.

Limits of the 364 Form Factor

The 1.55 Volt chemistry delivers consistent output until near depletion, yet capacity is fixed by the 6.8 mm diameter and 2.1 mm height. Devices that draw continuous high current will drain the cell faster than the rated milliampere-hours suggest. The silver oxide construction is not rechargeable and must be recycled after use.

How it compares

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

Price $34.99
Pricier than about 88% of the 10,440 comparable items (median $10.99).

Specifications

Power
Battery type364

Questions about this item

How do I confirm the 364 button cell delivers the rated 1.55 volt after installation?

Measure the voltage with a multimeter; a fresh silver-oxide cell should read at or very near 1.55 V under no-load conditions

What comes in the 50-piece pack and is any extra hardware required?

The pack contains fifty loose 364 / SR621SW silver-oxide cells measuring 6.8 mm by 2.1 mm; no holders or tools are included

My device lists LR60 and SR621SW — are both covered by this 364 pack?

Yes, the 364 type replaces LR60, LR620, SR60, SR60L, CX60, SR621, SR621SW, SR621W, S621E, R621, TR621, l621, lr621W and all other listed equivalents

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