The Renata 364 (also known as SR621SW, IEC SR60, NEDA 1175SO) is a Swiss-manufactured silver oxide button cell battery offering a consistent 1.55 V output and approximately 19 mAh capacity. Designed for low-drain precision devices, it is ideal for watches, calculators, hearing aids, remote controls, key fobs, and various compact electronics. Its mercury-free chemistry, exceptional leak resistance, low self-discharge, and accurate dimensions make it a trusted choice in quality-dependent applications.
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Coin and Button Cell| Feature | Detail |
|---|---|
| Brand / Model | Renata 364 (SR621SW / IEC SR60) |
| Chemistry | Silver Oxide (Zn/Ag₂O), mercury-free |
| Nominal Voltage | 1.55 V |
| Capacity | ~19 mAh (discharge over 47 kΩ at 20 °C) |
| Diameter | 6.80 mm |
| Height (Thickness) | 2.10–2.15 mm |
| Weight | ~0.30–0.31 g |
| Operating Temperature | –10 °C to +60 °C |
| Shelf Life / Self-Discharge | Up to 5 years; less than 5% per year |
| Terminal Type | Flat top |
| Rechargeable | No (primary cell) |
| Equivalent Codes | Maxell SR621SW, Panasonic SR621SW, Varta V364, Energizer 364, Duracell D364, Citizen 280‑34, Seiko SB‑AG/DG, Timex T, etc. |
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