VARTA silver oxide button cell V379, 1.55 volt, 15 mAh

This compact button cell delivers reliable energy for your watch, calculator or small electronics.⁠‌‌‌‍‌‌‌‌‌‌‍‌‍‍‍‌‍‌‍‍‌‌‍‌‌‌‍‌‍‌‍‍‍‌‍‍‍‍‌‌⁠ Thanks to the stable 1.55 volt voltage, your device keeps performing optimally for a long time.⁠‌‌‌‍‌‌‌‌‌‌‍‌‍‍‍‌‍‌‍‍‌‌‍‌‌‌‍‌‍‌‍‍‍‌‍‍‍‍‌‌⁠

When do you need this button cell?
The V379 silver oxide button cell is essential for small electronic devices that require a stable and reliable power source. You mainly use this battery in watches, calculators, remote controls and medical equipment. Silver oxide button cells deliver a constant voltage and have a long service life, making them ideal for precision devices.

Why choose this exact size?
With a diameter of 5.8 mm and a height of 2.15 mm, this V379 fits perfectly in devices that require this size. The battery is also known under the alternative codes SR521, SR521SW and 379, meaning you can use it as a replacement for button cells with these designations. The compact size makes it suitable for slim watches and small electronic devices.

What does the 15 mAh capacity deliver?
The capacity of 15 mAh ensures that your device can function for months to years, depending on power consumption. For a watch, this often means 1–3 years of use. The 1.55 volt voltage remains stable throughout the entire service life, so your device keeps working consistently without sudden voltage drops.

Practical fitting and storage
This button cell is supplied in a blister pack, which keeps the battery protected against moisture and short circuits until use. Always check the battery code in your device or manual before replacing it. Store unused batteries at room temperature and avoid contact between the positive and negative terminals.