Renata 377 / SR626SW Silver Oxide Button Battery 5-Pack

Five-Pack Silver Oxide Button Cells

This Renata 377 / SR626SW five-pack supplies 1.55 V silver-oxide coin cells measuring 6.8 mm x 2.65 mm. They power watches, calculators, medical devices and other compact electronics that require stable voltage. The pack delivers five fresh cells ready for immediate installation.

Silver Oxide Chemistry Limits

Silver oxide chemistry maintains a flatter discharge curve than alkaline LR626 or LR66 equivalents, so voltage stays closer to 1.55 V for most of the service life. The cells are non-rechargeable and must be replaced once depleted. They are not suited for high-drain applications that exceed the chemistry's modest continuous current capability.

Capacity Headroom For Low-Drain Devices

Each cell typically lasts five times longer than an alkaline equivalent in the same low-drain device, providing extended intervals between changes. A single 377 / SR626SW handles continuous microamp loads for months, but capacity runs out quickly if the load rises to milliamp levels or if the device lacks a low-voltage cutoff.