Single-use battery Varta V399

The Varta V399 is a single-use silver-oxide button cell designed for precision devices that require stable low-voltage power. Measuring 9.5 mm in diameter and 2.7 mm in height and weighing approximately 0.75 g, this SR57-format battery delivers a nominal voltage of 1.55 V and is intended for applications where reliable, long-lasting power and minimal self-discharge are important.

Advantages

Varta V399 cells feature high resistance to leakage due to an advanced sealing technology and are manufactured on fully automated production lines in Germany. They offer constant voltage output, low self-discharge, long running time and consistent quality thanks to precise production and the use of high-quality raw materials. The mercury-free silver-oxide chemistry provides dependable performance for small electronic devices.

Suitable for

• Watches and timepieces
• Calculators
• Small medical devices and measuring instruments
• Toys, key fobs and remote controls

Key specifications

• Type: Single-use battery (primary cell)
• Chemistry: Silver-Oxide (S), mercury-free
• Nominal voltage: 1.55 V
• Size/format: SR57 (9.5 mm diameter, 2.7 mm height)
• Weight: approx. 0.75 g (0.0008 kg)
• Packaging: 1 pc(s)
• Manufacturer MPN: 00399 101 111
• EAN: 4008496245772

How to use

Install the Varta V399 in the device following the polarity markings (+/–) indicated on the battery compartment. Ensure contacts are clean and dry before insertion. Use the battery in devices designed for SR57/SR57-type silver-oxide cells and replace with the same type when depleted. Dispose of used batteries according to local regulations for single-use batteries and recycling schemes.

Recommendations

Store unused batteries in a cool, dry place away from direct sunlight and heat sources. Do not attempt to recharge, disassemble or short-circuit the cell. Keep out of reach of children; small button cells can cause serious injury if swallowed.