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Two small silver coin cells side by side in a blister pack

NShi

NShi Energizer SR621SW Silver Oxide Coin Cell Battery 2 Pack

SKU CH-E8J3-KF3ZW

Two Energizer silver-oxide coin cells deliver 1.55 V and 19 mAh for watches, keyless entry and small electronics

  • SpecificationsSR621SW, Coin/Button Cell, Energizer, Does Not Apply, Silver
  • TypeCoin/Button Cell
  • Battery TypeSR621SW, Coin/Button Cell, Silver Oxide
  • Battery CapacitySR621SW, Does Not Apply
  • Battery VoltageSR621SW
  • FeatureSR621SW, Energizer, Coin/Button Cell, Silver Oxide
  • Reliable 1.55 V output powers watches and small electronics
  • Silver-oxide chemistry delivers steady voltage for accurate timekeeping
  • 19 mAh typical capacity supports long service life
  • Mercury-free composition meets environmental standards
  • Two fresh cells included for immediate replacement or spare

Reliable Silver Oxide Coin Cells

Two Energizer SR621SW batteries deliver a nominal 1.55 Volts and 19 mAh typical capacity each. The silver oxide chemistry provides stable voltage output for precise timekeeping and low-drain devices. Mercury-free construction meets environmental standards. Fresh stock ensures a shelf life of five-plus years.

Steady Low-Drain Performance

Internal resistance remains low throughout discharge, so watches, calculators and keyless entry fobs receive consistent power without voltage sag. The 0.37 gram cells generate no audible noise and produce negligible heat during normal operation. Zero mercury content eliminates leakage risk over extended storage periods.

Direct Replacement For Common Sizes

Each cell matches SR621SW, 364, 363, AG1, D364, SR60, SR621SW, LR621, SR60L and numerous manufacturer codes including 280-34, 164, 531, 602, 620, 362, 320 and 1175. No adapters or software required; simply insert into compatible devices across watch, computer, hearing aid and consumer electronics applications.

Highlights

  • Reliable 1.55 V output powers watches and small electronics
  • Silver-oxide chemistry delivers steady voltage for accurate timekeeping
  • 19 mAh typical capacity supports long service life
  • Mercury-free composition meets environmental standards
  • Two fresh cells included for immediate replacement or spare

Specifications

BrandEnergizer
ModelDoes Not Apply
Part NumberDoes Not Apply
SpecificationsSR621SW, Coin/Button Cell, Energizer, Does Not Apply, Silver Oxide
TypeCoin/Button Cell
Battery TypeSR621SW, Coin/Button Cell, Silver Oxide
Battery CapacitySR621SW, Does Not Apply
Battery VoltageSR621SW
FeatureSR621SW, Energizer, Coin/Button Cell, Silver Oxide
Package ContentsSR621SW, Energizer, Coin/Button Cell, Does Not Apply

Questions about this item

How do I install the SR621SW coin cell and which side must face up?

Insert the cell with the positive side marked + facing the contact indicated in your device; the flat negative side goes against the spring or base.

When will the 19 mAh silver oxide cell need replacing in a typical watch?

Shelf life exceeds five years; in a low-drain watch the cell usually lasts one to two years before voltage drops below usable level.

What is the first limit reached under continuous drain from the 1.55 V cell?

The 19 mAh capacity is exhausted quickly under sustained load, causing voltage to fall off well before the five-year shelf limit.

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