SR712SW 346 Battery Equivalents
SR712SW are silver-oxide button/coin batteries, commonly used in analog and digital watches and other small electronic devices that don't require strong currents to operate, for example, thermometers and similar medical equipment.
SR712SW batteries are low-drain batteries, featuring stable output voltage and a wide operating temperature range.
Published: May 8, 2021.
SR712SW Features and Specifications
SR712SW battery is button/coin cell battery, featuring physical dimensions (D x H) of 7.9 x 1.3 mm (~0.3110 x 0.05118 inches).
As said before, the SR712SW battery features silver-oxide chemistry, while alkaline chemistry is not in use - watches, thermometers, and similar devices require as stable as possible output voltage, hence, the alkaline 7.9 x 1.3 mm button/coin cell batteries are practically not in use.
Silver-oxide 7.9 x 1.3 mm battery's most common label is SR712 and SR712SW, but other labels are in use, including 346 battery, V346 (Varta 346 battery), 628 battery (Bulova), 280-66 (Citizen), 9949 (Omega), SB-AH (Seiko), etc.
All these batteries feature a nominal voltage of 1.55 volts, a cutoff voltage of 1.2 volts, and nominal capacity in the 9-10 mAh range.
Note: actual capacity depends on the battery's temperature, drain current, battery age, and similar.
Operating temperature is usually in the -10°C to +60°C range, and the annual self-discharge rate is 2-10% per year at room temperature, allowing these batteries to be stored 2-5 years, depending on the model.
The following comparison chart lists some of the most popular SR712SW silver-oxide batteries:
| Battery Datasheet |
Capacity | Operating Temperature | Annual Self-Discharge Rate | Discharge Current |
| Energizer 346 | 9.5 mAh, 100 kΩ down to 1.2V @21°C | - | ~2% @21°C | - |
| Renata 346 | 9.5 mAh, 47 kΩ down to 1.2V @23±3°C | -10°C to +60°C | <10% @20°C | 32.5 μA, 47 kΩ @23±3°C |
| Seiko SR712SW | 10 mAh | - | - | 10 μA |
| Sony SR716SW | 9.5 mAh | - | - | - |
| Varta V346 | 9 mAh, 68k1 Ω down to 1.2V @20°C | -10°C to +65°C | - | 23 μA, 68k1 Ω @20°C |
Of course, there are many other models on the market - when choosing "the best" SR712SW battery, go for the battery that fits your needs and requirements and which is easy to find, either locally or from the online shops.
SR712SW Safety Issues
Modern SR712SW and similar button/coin cell batteries don't contain mercury, cadmium, and similar heavy metals which are toxic pollutants.
However, the SR712SW battery is a small and shiny object that can attract pets and small children and is easy to swallow.
Although materials found in the SR712SW battery are generally not toxic, if the battery gets swallowed, fluids in the body can short-circuit the battery, starting electrolysis, whose products can be rather harmful.
If SR712SW or any similar battery gets swallowed, contact the nearest emergency center immediately and act according to their instructions.
Long Story Short: If You are looking for a 7.9 x 1.3 mm button/coin battery, go for a silver-oxide SR712SW (346) battery from a reputable brand - such batteries have very stable voltage, can last for years and very often come in pets/kids-safe packages.
Some of the most popular models are (Amazon links, the links open in the new window):
- Energizer 346 SR712SW Silver Oxide Battery
- Renata 346 SR712SW Watch Battery
- Maxell SR712SW 346 Watch Battery
Although modern silver-oxide batteries generally don't contain dangerous chemicals and heavy elements, dispose of them properly.