The Bulova battery 850 is usually a CR2032 type. Equivalent options are GL34-10A (SR621SW) and SR344 for Oysterquartz models. This battery typically lasts about one year in normal use. Check the reference table for detailed Bulova model numbers and equivalent batteries for your device.
When replacing the Bulova 850 battery, it is essential to consider cross-references. Popular alternatives include SR921SW and SR920SW batteries, which may offer similar performance. However, ensure the dimensions and voltage match your Bulova watch requirements. Using the wrong battery can damage your timepiece or shorten its lifespan.
For those interested in further details, a comprehensive compatibility chart is available. This chart includes the Bulova 850 and its cross-referenced batteries, making it easy to choose the right replacement. By following these guidelines, you can ensure your watch remains in optimal condition.
In the next section, we will delve into the step-by-step process of replacing the Bulova 850 battery. This will ensure you feel confident and equipped to undertake this task on your own.
What Is the Bulova 850 Battery Size?
The Bulova 850 battery size is a specific type of watch battery utilized in Bulova timepieces, known for its compact dimensions and reliable performance. The Bulova 850 battery is equivalent to the SR726SW battery, with a typical voltage of 1.55 volts.
According to the International Battery Association, the SR726SW designation indicates that the battery is a silver oxide type, which offers consistent power and a long shelf life. These batteries are commonly used in watches and small devices that require compact power sources.
The Bulova 850 battery features a diameter of 7.6 mm and a height of 2.6 mm. The silver oxide chemistry ensures stable voltage output and longevity, making it suitable for precise timekeeping. A fresh Bulova 850 battery can last several years, depending on the watch’s energy consumption.
Additional authoritative sources, like the Battery University, offer insights into battery types and their applications. Silver oxide batteries like the Bulova 850 are favored for their capacity to deliver sustained energy output, which is critical for quartz watches.
Several factors contribute to battery performance, including temperature, usage patterns, and shelf life. Improper storage can lead to battery depletion. Additionally, cheaper imitation batteries may compromise watch functionality.
The Battery University notes that proper disposal and recycling of batteries are crucial. The proliferation of batteries has raised environmental concerns, as millions end up in landfills, potentially leaking harmful substances.
Risks associated with improper battery disposal include soil and water contamination. Communities with industrial activity often experience more significant impacts, highlighting the need for awareness and education.
To address battery disposal issues, experts recommend recycling programs that promote safe disposal. Organizations like Call2Recycle provide resources for battery recycling, ensuring compliance with environmental standards.
Specific strategies to mitigate improper battery disposal include community education programs and partnerships with local recycling centers. Technology improvements in battery design could also enhance environmental sustainability.
Which Watches Use the Bulova 850 Battery?
The Bulova 850 battery is commonly used in several specific watch models.
- Bulova Accutron models
- Bulova Precisionist series
- Bulova Marine Star watches
- Bulova Lunar Pilot watches
- Bulova Classic and Fashion models
The following sections will provide detailed insights into each of these watch types that utilize the Bulova 850 battery.
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Bulova Accutron models: Bulova Accutron models are renowned for their innovative tuning fork technology. This technology provides enhanced precision in timekeeping. For instance, the Accutron 214, launched in the 1960s, was one of the first watches to achieve extraordinary accuracy, boasting a deviation of only 1 minute a month. Many modern Accutron models continue to rely on the Bulova 850 battery for optimal function.
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Bulova Precisionist series: The Bulova Precisionist series features a unique movement that allows for a higher frequency of 262 kHz. This results in superior accuracy, gaining only 10 seconds a year. Watches in this series utilize the Bulova 850 battery to support their high-performance quartz movements. This precision is especially appealing to watch enthusiasts seeking reliability.
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Bulova Marine Star watches: The Bulova Marine Star watches focus on aquatic functionality and style. They often feature water resistance and sporty designs. Models within this category commonly utilize the Bulova 850 battery to ensure dependable operation under various conditions, appealing to divers and sports watch collectors.
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Bulova Lunar Pilot watches: The Bulova Lunar Pilot holds a historical significance as it was worn by astronaut David Scott during the Apollo 15 mission in 1971. This watch, known for its chronograph features, uses the Bulova 850 battery. Its connection to space exploration adds a unique appeal for collectors and enthusiasts of aviation or space-themed watches.
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Bulova Classic and Fashion models: The classic and fashion-oriented models from Bulova encompass a wide range of designs catering to different tastes. These watches often prioritize elegance and style while relying on the Bulova 850 battery for reliable operation. The diversity of designs in this category allows consumers to find a timepiece that matches their personal aesthetic.
With this information, you can better understand the various watch models that use the Bulova 850 battery.
What Are the Compatible Alternatives to the Bulova 850 Battery?
The compatible alternatives to the Bulova 850 battery include several battery types that can serve as substitutes, primarily based on size and voltage specifications.
- SR927W
- SR44W
- LR927
- 395
- 399
- AG7
The above alternatives represent different types of batteries that can be used. Some may offer varying attributes such as longevity, performance in temperature extremes, or cost-effectiveness. Consumers might have differing opinions on which alternative performs best based on personal experiences or specific watch requirements.
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SR927W:
The SR927W battery is a silver oxide battery, commonly used for watches. It typically has a nominal voltage of 1.55 volts and is well-known for providing stable energy output over time. This battery can last for several years in most applications, making it a reliable choice. Users often prefer it for its ability to hold its charge for longer periods compared to alkaline alternatives. -
SR44W:
The SR44W battery is another silver oxide option. Like the SR927W, it functions at a nominal voltage of 1.55 volts. It is often favored in high-performance watches due to its higher capacity. Models that require more power, such as those with additional features like backlighting, may benefit from using the SR44W. Its extended life and consistent performance make it a popular choice among watch enthusiasts. -
LR927:
The LR927 battery is an alkaline alternative with a nominal voltage of 1.5 volts. While it is not as stable as silver oxide batteries in terms of voltage maintenance, it is often more affordable. Consumers may choose the LR927 for budget-sensitive applications. However, its shorter lifespan compared to silver oxide batteries can lead to more frequent replacements. -
395:
The 395 battery, also an alkaline type, is primarily used in watches and similar gadgets. This battery has a voltage of about 1.5 volts and is appreciated for being cost-effective. However, users often report that the 395 battery’s performance may decline faster than that of its silver oxide counterparts. -
399:
The 399 battery is similar to the 395 but may offer a slightly different size or capacity. It functions at a nominal voltage of 1.5 volts. The choice between the 395 and 399 models largely depends on individual watch specifications. Reviews from users highlight the importance of checking compatibility, as not all watches accept both types interchangeably. -
AG7:
The AG7 battery is a nickel-cadmium option that typically has a nominal voltage of 1.25 volts. While less common for high-end watches, it can be useful in certain models that are specifically designed for rechargeable batteries. Users should note the potential for reduced capacity and lifespan when opting for rechargeable solutions.
Each of these alternatives offers unique advantages and disadvantages. Selecting the right option often depends on individual needs, such as battery longevity, performance expectations, and budget.
How Does the Bulova 850 Battery Compare to Other Battery Sizes?
The Bulova 850 battery is a commonly used size in watches and has specific characteristics that can be compared with other battery sizes. Below is a comparison of the Bulova 850 battery with several other common battery sizes in terms of dimensions, voltage, and capacity.
| Battery Size | Dimensions (mm) | Voltage (V) | Capacity (mAh) |
|---|---|---|---|
| Bulova 850 | 8.0 x 2.0 | 1.55 | 40 |
| SR626SW | 6.8 x 2.6 | 1.55 | 50 |
| LR44 | 11.6 x 5.4 | 1.5 | 150 |
| CR2032 | 20.0 x 3.2 | 3.0 | 220 |
This table illustrates the differences in size, voltage, and capacity, which can be crucial for compatibility in various watch models.
How Long Can You Expect the Bulova 850 Battery to Last?
The Bulova 850 battery typically lasts between 2 to 3 years. This lifespan can vary based on several factors, including usage patterns and environmental conditions.
In general, quartz watch batteries like the Bulova 850 are designed for longevity. They provide consistent power to maintain accurate timekeeping. For instance, a watch worn daily may deplete the battery quicker than one that is only worn occasionally. It is common for batteries to last longer if the watch has features like illumination or alarms turned off.
External factors can also influence battery life. Temperature extremes can shorten battery life. In hot settings, battery chemicals may react more quickly, leading to faster depletion. Conversely, cold environments might slow down battery performance but may not necessarily extend its life.
For example, a Bulova 850 battery in a watch worn by someone who travels frequently and subjects it to various temperatures may need replacement sooner than one worn in stable indoor conditions. Additionally, how well the watch is maintained can affect its energy consumption.
In summary, Bulova 850 batteries generally last 2 to 3 years, depending on usage, environmental conditions, and watch features. Users should consider keeping spare batteries and monitoring their watches for signs of low power. Further exploration may include looking into battery types for different watch models and maintenance practices to extend battery life.
What Are the Signs That Indicate a Bulova 850 Battery Replacement Is Needed?
The signs that indicate a Bulova 850 battery replacement is needed include several key indicators.
- Watch stops functioning entirely.
- Watch runs slow or fast.
- Watch displays erratic timekeeping.
- Watch hands become stuck or jump.
- Battery life is shorter than expected, typically less than 1 year.
These signs highlight important issues with the watch that warrant a closer look at the battery condition. A failing battery not only affects the timekeeping accuracy but can also impact the overall performance of the watch.
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Watch Stops Functioning Entirely:
The first sign that indicates a Bulova 850 battery replacement is needed occurs when the watch stops functioning entirely. This usually indicates that the battery has completely drained and is unable to provide the power required for the watch to operate. According to Bulova, a well-maintained watch battery should last about 1 to 3 years, depending on the model. If the watch suddenly ceases to operate, it’s highly likely that the battery requires replacement. -
Watch Runs Slow or Fast:
The second sign is when the watch begins to run slow or fast. This inconsistency can signal a declining battery voltage. A study conducted by the National Institute of Standards and Technology confirms that quartz movements can lose accuracy as the battery power wanes. If the watch is deviating from standard time significantly, replacing the battery could restore accurate timekeeping. -
Watch Displays Erratic Timekeeping:
The third sign occurs when the watch exhibits erratic timekeeping. Users may notice that the minute and hour hands jump or move sporadically. This behavior indicates a fluctuation in power supply caused by a weak battery. In 2020, Bulova highlighted that erratic timekeeping is a common symptom of battery failure in quartz watches, suggesting that users should replace the battery promptly. -
Watch Hands Become Stuck or Jump:
The fourth indication is that the watch hands become stuck or jump unexpectedly. This phenomenon is often the result of insufficient energy from a failing battery, which cannot sustain the movement of the gears smoothly. Users should address this issue immediately to avoid potential long-term damage to the movement mechanism. -
Battery Life is Shorter Than Expected:
The final sign involves the battery life being shorter than expected. Typically, a Bulova 850 battery should last up to three years. If users find themselves replacing the battery more frequently—within one year—this suggests either a defect in the battery itself or an issue with the watch. A short battery life raises concern regarding whether the watch requires repair beyond a simple battery replacement.
By observing these signs, users can determine when a battery replacement for the Bulova 850 is necessary to maintain proper functionality and accuracy.
Where Can You Buy the Bulova 850 Battery?
You can buy the Bulova 850 battery at various retailers. Local jewelry stores often carry watch batteries, including this specific type. Online marketplaces like Amazon and eBay also stock the Bulova 850 battery. Additionally, specialty watch repair shops may have it in inventory. When purchasing, verify the battery specifications to ensure compatibility with your watch.
How Do You Properly Replace the Bulova 850 Battery in a Watch?
To properly replace the Bulova 850 battery in a watch, follow these steps: gather the necessary tools, remove the case back, replace the battery carefully, and reassemble the watch securely.
Gather the necessary tools: You need a small Phillips screwdriver and a pair of plastic tweezers. The screwdriver will help you remove the screws on the case back, while the plastic tweezers allow you to handle the battery without causing damage to it or the watch’s internals.
Remove the case back: Turn the watch face down on a soft surface to prevent scratches. Use the Phillips screwdriver to unscrew the four screws on the case back. Carefully lift the back off, taking care not to lose any small parts.
Replace the battery: Identify the old battery, which will typically be a CR621 battery. Use the plastic tweezers to gently lift the old battery out of its compartment. Place the new CR621 battery in the same orientation as the old one, ensuring that the positive side is facing up.
Reassemble the watch: Carefully align the case back with the watch body. Press it down gently, making sure it sits flat. Reinsert and tighten the four screws using the Phillips screwdriver. This ensures that the back is secure and protects the internal components from dust and moisture.
After completing these steps, check the functionality of the watch to ensure that the battery replacement was successful. Proper handling and assembly will help maintain the integrity of your Bulova watch.
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