309 Watch Batteries for Quartz Watches
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309 Watch Battery SR754SW / Varta V309
The 309 watch battery is a compact 1.55V silver oxide coin cell used in selected quartz watches and precision miniature electronics. Also known by the reference SR754SW, this battery size is designed for devices that need stable voltage, low self-discharge and dependable performance over time. In this category you can find the Varta V309 1.55V, a trusted replacement cell for compatible watch movements.
When your watch starts losing time, the display becomes weak, or the movement stops completely, replacing the battery with the correct 309 / SR754SW equivalent can restore reliable operation. Always check the code printed on the old cell or consult the watch manual before ordering.
How to identify the correct 309 battery
Watch battery codes can vary between manufacturers, which is why the same cell may be listed under several names. For this category, the most important references are 309, SR754SW and Varta V309. These markings help you match the diameter, height, chemistry and voltage required by your watch.
- Battery type: silver oxide watch battery
- Voltage: 1.55V
- Common codes: 309, SR754SW, V309
- Typical use: quartz wristwatches and small precision devices
- Brand available: Varta
Silver oxide batteries are preferred in many watches because they maintain a more consistent output than standard alkaline button cells. This is especially important for accurate timekeeping and for movements that require a steady power supply until the battery is depleted.
Why choose Varta V309 for your watch?
Varta is a well-known battery manufacturer with a long reputation in portable power solutions. The Varta V309 is made for dependable performance in compatible watches, offering stable 1.55V output in the SR754SW format. Choosing a quality battery helps reduce the risk of leakage, weak performance or premature replacement.
If you are replacing the battery yourself, handle the cell with clean, dry hands or plastic tweezers where possible. Avoid short-circuiting the battery, touching both sides with metal tools, or forcing it into a compartment. If the watch has a water-resistant case, professional installation may be recommended to preserve the seal.
Compatibility tips before ordering
Before buying a 309 watch battery, compare the code on your existing battery with the product reference. Do not rely only on appearance, because many coin cells look similar but differ in thickness or chemistry. A wrong size may not fit correctly, while an incorrect voltage or battery type may affect the device.
- Open the battery compartment or case back carefully.
- Read the code on the old cell: 309, SR754SW or V309.
- Confirm that your device requires a 1.55V silver oxide battery.
- Order the matching replacement from this category.
Tip: If your old battery code is hard to read, check the watch manual or ask a qualified watch technician before purchasing.
Order your 309 watch battery online
BatteryMarket.bg makes it easy to buy a genuine Varta V309 1.55V watch battery online. Whether you need a single replacement for a favorite watch or a spare cell for future maintenance, this category is focused on the correct 309 / SR754SW size so you can shop with confidence.
