Varta Silver oxide watch battery V364 / SR621SW 1.55 V

The Varta V364, internationally known as SR621SW, is one of the most popular premium silver oxide button cells, specially developed for the precise requirements of high-quality wristwatches. As a specialist in watch batteries, Varta guarantees the highest quality, reliability, and an extremely long service life. With its stable voltage of 1.55 V and an optimised capacity of 18 mAh, it ensures maximum accuracy and protects your valuable watch movement.

Highlights at a glance

• Premium quality: High-quality silver oxide technology for watches and precision devices
• Extremely stable voltage: Constant 1.55 V for maximum accuracy and reliability
• Long service life: Optimised capacity and minimal self-discharge for years of operation
• High leakage safety: Maximum protection for your valuable and delicate watch movement
• Tested quality: Reliable energy from one of the leading manufacturers

Precision energy for high-quality watches

The Varta V364 is a widely used energy source for a variety of analogue and digital quartz watches. Its cell chemistry is optimised for low, constant current consumption, which is typical for movements without additional functions. Its compact size makes it the perfect choice for a wide range of women's and men's watches.

Superior silver oxide technology

Compared to conventional alkaline batteries, the silver oxide technology of the V364 offers decisive advantages. The voltage remains stable over almost the entire lifetime of the battery, which ensures the precision of the device. The high energy density enables a long runtime in a very small size. Thanks to minimal self-discharge, the battery is also extremely long-lasting in storage.

Efficiency and safety for your watch movement

Varta watch batteries are subject to the strictest quality controls to ensure consistently high performance and maximum safety. The high-quality workmanship and sealing of the V364 cell provides reliable protection against leakage and thus protects the sensitive movement from damage. Trust in tested quality for your valuables.
 

Characteristics

FAQs about the Varta V364 watch battery

What does the designation SR621SW mean?

The international IEC designation provides information about the battery. "S" stands for silver oxide, "R" for the round shape, "621" for the dimensions (6.8 mm x 2.15 mm) and the "SW" at the end marks a "Low Drain" version. This is specially optimised for devices with low and constant current consumption, such as wristwatches.

Is this battery compatible with the designation SR60SW?

The Varta 364 corresponds to the internationally standardised IEC designation SR621SW. The designation SR60SW is not standardised. Please check the number on your old battery. If it says 364 or SR621SW, this is the correct replacement.

Can I replace an LR621 alkaline battery with this V364?

Yes, this is possible in almost all cases and represents a clear upgrade. The V364 (SR621SW) offers a longer service life and a more stable voltage, which improves the accuracy of your watch. For high-quality watches, the use of a silver oxide battery such as the V364 is strongly recommended.

How should this watch battery be disposed of?

Watch batteries must not be disposed of in household waste. Please take the empty battery to the designated collection points in shops or municipal recycling centres to ensure environmentally friendly recycling.