Varta Silver oxide watch battery V309 / SR48SW 1.55 V

The Varta V309, internationally known as SR48SW, is a premium silver oxide button cell that has been 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 a high capacity of 105 mAh, 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: High capacity and minimal self-discharge for years of operation
• High leakage safety: Maximum protection for your valuable watch movement
• Tested quality: Reliable energy from one of the leading manufacturers

Precision energy for high-quality watches

The Varta V309 was specially designed for use in analogue and digital quartz watches. Its cell chemistry is optimised for low, constant power consumption, as is typical for watch movements. In addition to watches, this battery is also ideal for a wide range of other electronic precision instruments where a constant power supply is essential for accurate measurement results.

Superior silver oxide technology

Compared to conventional alkaline batteries, the silver oxide technology of the V309 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 V309 cell offers reliable protection against leakage and thus protects the sensitive movement from damage. Trust in tested quality for your valuable devices.
 

Characteristics

FAQs about the Varta V309 watch battery

What does the designation SR48SW mean?

The international IEC designation provides information about the battery. "S" stands for silver oxide, "R" for the round shape, "48" for the dimensions and the "SW" at the end characterises a "Low Drain" version. This is specially optimised for devices with low and constant power consumption, such as wristwatches.

Can I replace an LR48 alkaline battery with this V309?

Yes, this is possible in almost all cases and represents a significant upgrade. The V309 (SR48SW) offers a longer service life and a more stable voltage, which improves the accuracy of your watch. The use of a silver oxide battery such as the V309 is strongly recommended for high-quality watches.

What is the difference between a V309 (SR48SW) and a V393 (SR48)?

Both batteries are silver oxide cells of the same size. The V309 (SR48SW) is a "Low Drain" cell for the low, constant current requirement of watches. The V393 (SR48) is a "High Drain" cell for devices that require more current for a short period, such as calculators with display or electronic toys.

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.