Silver oxide battery
Silver oxide cells | |
| Specific energy | 130 Wh/kg |
|---|---|
| Energy density | 500 Wh/L |
| Specific power | High |
| Charge/discharge efficiency | N/A |
| Energy/consumer-price | Low |
| Time durability | High |
| Cycle durability | N/A |
| Nominal cell voltage | 1.55V |
A silver oxide battery (IEC code: S) is a primary cell using silver oxide as the cathode material and zinc for the anode. These cells maintain a nearly constant nominal voltage during discharge until fully depleted. They are available in small sizes as button cells, where the amount of silver used is minimal and not a prohibitively expensive contributor to the overall product cost.
Silver oxide primary batteries account for 30% of all primary battery sales in Japan (64 mil. out of 212 million in February 2020).