Varta Silver oxide watch battery V319 / SR521SW 1.55 V

The Varta V319, internationally known as SR521SW, is a premium silver oxide button cell in a particularly small design that has been specially developed for the precise requirements of delicate wristwatches. As a specialist for watch batteries, Varta guarantees the highest quality, reliability and an extremely long service life. With its stable voltage of 1.55 V and optimised capacity, it ensures maximum accuracy and protects your valuable 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
• Miniaturised design: Ideal for very small and flat wristwatches

Precision energy for delicate watches

The Varta V319 was specially designed for use in analogue and digital quartz watches with very small movements. Its cell chemistry is optimised for low, constant power consumption, which is characteristic of these types of clocks. Its extremely compact size makes it the perfect choice for elegant and delicate ladies' and men's watches.

Superior silver oxide technology

Compared to conventional alkaline batteries, the silver oxide technology of the V319 offers decisive advantages. The voltage remains stable over almost the entire service life of the battery, which ensures the precision of the device. The high energy density enables a long runtime in a very small design. Thanks to the minimal self-discharge, the battery also has an extremely long shelf life.

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 V319 cell offers reliable protection against leakage and thus protects the sensitive movement from damage. Trust in tested quality for your valuable devices.
 

Battery features

FAQs about the Varta V319 watch battery

What does the designation SR521SW mean?

The international IEC designation provides information about the battery. "S" stands for silver oxide, "R" for the round design, "521" for the dimensions (5.8 mm x 2.1 mm) and the "SW" at the end indicates a "low drain" version. This is specially optimised for devices with low and constant power consumption, such as wristwatches.

Is this battery compatible with the designation SR64SW?

No, the Varta 319 corresponds to the IEC standard SR521SW. A battery labelled SR64SW is a different, larger battery type and is not interchangeable. Please always check the exact number on your old battery to find the right replacement.

For which watches is this battery type suitable?

The V319 is typically used in very small, flat wristwatches. Due to its small size, it is a popular choice for elegant and delicate ladies' watches that have a particularly small movement.

How should this watch battery be disposed of?

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