With the advent of the Apple Watch, wrist-worn timepieces have entered a new era, captivating a generation that once relied on smartphones and tablets to check the time.

However, unlike their digital counterparts, traditional watches can grind to a halt if their batteries give out unexpectedly. Replacing a watch battery is not as straightforward as one might assume; there are approximately 40 different battery sizes, various brands, and different technologies like lithium-ion and silver oxide to consider. In this guide, we'll explore some of the top battery brands trusted by watchmakers, available both in physical stores and online.

Renata batteries hail from a Swiss company owned by the prestigious Swatch Group, known for producing iconic watch brands like Omega, Longines, and Breguet. Renata batteries, although slightly more expensive, are often chosen for quartz watches due to their reputation for longevity and reliability. Notably, these batteries consist of silver oxide and are entirely mercury-free, a significant shift from earlier watch batteries. They deliver a steady 1.55 volts and boast an impressively low self-discharge rate, along with leak-proof qualities. Renata batteries are frequently used in Swiss quartz watches, including those from Rolex, Tag Heuer, and Breitling.

Maxell, renowned for its small electronics batteries, is a well-established choice for watch batteries. These button-cell batteries, also constructed from silver oxide and devoid of mercury, provide a dependable 1.5 volts. Maxell offers a variety of battery types and sizes, catering to both high-drain and low-drain watches. As the watch industry continues to incorporate new features like backlighting, audible alarms, and even calculators into timepieces, there's a growing demand for high-drain batteries to power these functionalities. To distinguish between low-drain and high-drain versions, you'll notice that low-drain watch batteries end with a 'W', whereas high-drain counterparts are labeled 'SW'. Maxell also provides a range of watch-sized electronic specialty batteries suitable for specific handheld engineering tools.

Varta produces an impressive selection of 33 different watch and timepiece batteries. While some of their offerings resemble the silver oxide batteries produced by other companies, Varta also manufactures alkaline manganese and Li-ion batteries. Although primarily designed as watch batteries, the alkaline and lithium variants serve other devices like calculators, cameras, and car keys. Some digital watches with liquid crystal displays and unique timepieces, such as certain Omega watches powered by rare 2-volt lithium batteries, can also benefit from Varta's specialized batteries. Varta's versatility extends to supplying batteries for pagers and calculators.

Sony stands as the world's largest manufacturer of silver oxide button cell batteries, producing an impressive range of 40 different models to accommodate various timepieces. Roughly half of these batteries cater to high-drain watches, while the rest are tailored for low-drain timepieces. Regardless of the category, Sony watch batteries consistently provide 1.5 volts, although the capacity may vary. These batteries are suitable for high-end quartz watch movements, as long as you match the high-drain or low-drain battery appropriately with your watch. In addition to watch applications, Sony batteries find use in analog and digital watches, calculators, toys, and other portable electronics. They are celebrated for their leak resistance, voltage stability, and extended shelf life. Notably, Sony also supplies watch batteries to respected watch manufacturers like Seiko, Casio, Citizen, and Orient.

Energizer, renowned for its iconic bunny mascot, is a recognizable brand for batteries, including silver oxide and lithium types. These batteries are often marketed as button cells or lithium coin batteries, with designations like CR2016 or CR1632 indicating specific models. Energizer watch batteries are not only affordable but also versatile, serving diverse applications beyond timepieces. They provide a steady 1.5 volts and exhibit resistance to leakage. Notably, they are used in glucose monitors, pedometers, remote controls, and other compact devices. Consumer reviews frequently highlight the longevity and overall quality of Energizer watch batteries.

While these watch batteries may appear similar, differences in usage and quality exist among manufacturers. Although individually priced at just a few dollars, there can be variances in pricing between brands. It's important to note that all button cell batteries sold as watch batteries provide 1.5 volts. The distinctions lie in the battery's capacity, which can vary significantly.

We have provide several way to purchase your watch batteries. eBay offers the most extensive and competitive selection of watch batteries from various sellers, available in single units or multi-packs. To find a specific brand, simply input the name, such as "Sony watch batteries," into the search bar on any E-commerce site. You can also narrow your search by specifying the battery size. Additional filters, such as free shipping or price range, can further streamline your search. Internet stores that specialize in jewelry and watches also stock a range of watch batteries.

You can also read our specific guides for watch reviews to see which battery fits the best.

Watches are more than just functional timekeeping devices; they are expressions of elegance and style. The resurgence in watch popularity, partly fueled by innovations like the Apple Watch, underscores their enduring appeal. While modern technology provides alternative timekeeping methods, there's an undeniable charm in adorning your wrist with a watch. Nevertheless, even the most sophisticated timepiece relies on a humble battery to stay operational. If you're ever faced with the daunting task of selecting a replacement battery, remember to consult your watchmaker or check for inscriptions on the back of the watch for battery voltage and size information. Making the right choice ensures your watch continues to serve as a timeless companion.