The SR521 silver oxide button battery is a non-rechargeable disposable battery, which is different from the voltage of the zinc air battery of 1.4V and the lithium button battery voltage of 3V. It has a voltage of 1.55V, a capacity of 11mAh, a diameter of 5.8mm and a thickness of 2.1mm.
The SR521sw silver oxide battery is a small, lightweight button battery that has almost the same voltage as an alkaline battery, so it can be used in many small electronic devices and watches.
SR521 silver oxide battery can be used in remote key
SR521 silver oxide battery can be used in digital watch
SR521 silver oxide battery can be used in Hearing aid