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A blister pack holding twenty-five small silver coin cells in rows

Renata

Renata 364 / SR621SW Silver Oxide Button Battery 25-Pack

SKU CH-BSY5-C33ST

Pack of 25 silver-oxide 364 button cells delivering 1.55 V for watches and small electronics

  • Battery type364
  • Reliable 1.55 V output from silver-oxide chemistry
  • 25 batteries keep watches and devices running longer
  • Compact 6.8 mm × 2.1 mm size fits slim cases
  • Replaces 364, SR621SW, LR60 and many equivalents
  • Trusted Renata quality for consistent performance

Renata 364 silver oxide 25-pack

This 25-pack supplies Renata 364 silver oxide button cells rated at 1.55 Volt. Each cell measures 6.8 mm by 2.1 mm. The pack suits owners of watches, calculators or small medical devices that require this specific size and chemistry.

Replaces LR60 LR620 SR60 SR621SW

The cells replace common equivalents including LR60, LR620, SR60, SR621SW and numerous vendor codes such as 364A, 364B, V364, GP364 and 621. The jump is worth it when a device demands the stable 1.55 Volt output of silver oxide rather than the declining voltage of alkaline alternatives.

Silver oxide voltage stability limit

Silver oxide chemistry delivers a flat 1.55 Volt discharge curve that benefits precision timekeeping and low-drain electronics. The practical limit appears in high-drain applications where the small 6.8 mm by 2.1 mm cell cannot sustain current, causing voltage to sag and runtime to shorten considerably.

How it compares

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

Price $25.99
Pricier than about 82% of the 10,440 comparable items (median $10.99).

Specifications

Power
Battery type364

Questions about this item

What are the 6.8 mm x 2.1 mm dimensions for the 364 cell?

The silver-oxide button measures 6.8 mm in diameter and 2.1 mm in height, matching the standard 364/SR621SW form factor.

How do I install the 1.55 V silver-oxide cell correctly?

Insert the battery with the flat positive side facing the contact marked +; reversing polarity is the common mistake that prevents the device from powering on.

When should I replace the 25-pack of 364 batteries?

Replace a cell when the device shows low-power symptoms — dim display, erratic timekeeping or failure to start — typically after one to three years of continuous use.

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