Silver Oxide vs Alkaline — What Is the Difference?
| Silver Oxide | Alkaline | |
|---|---|---|
| Voltage | 1.55V | 1.5V |
| Diameter | Various | Various |
| Thickness | Various | Various |
| Capacity | Higher | Lower |
| Chemistry | Silver Oxide | Alkaline |
| Common uses | watches, precision instruments, medical devices, cameras | calculators, toys, thermometers, general electronics |
Are they interchangeable?
Yes — interchangeableYes, where button cells of the same size exist in both chemistries. For example, SR44 (silver oxide) and LR44 (alkaline) are the same physical size. Silver oxide provides a more stable voltage throughout its life and typically lasts 50-100% longer. Alkaline button cells are cheaper but their voltage drops steadily as they discharge.
The verdict
For watches, use silver oxide — the stable voltage keeps timekeeping accurate. For toys, calculators, and general electronics, alkaline is fine and cheaper. Both fit the same compartments when they share the same size designation.
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