The correct battery for your Tag Heuer watch depends on the specific model, but most use silver oxide or lithium coin cell batteries like the Renata 371 or CR2032.
If your Tag Heuer has suddenly stopped ticking, chances are the battery is due for a replacement. Tag Heuer, known for its precision Swiss craftsmanship, uses high-quality movements that rely heavily on the right battery type to ensure optimal performance. But with dozens of models—from the Aquaracer to the Carrera—figuring out the exact battery needed can be frustrating.
That’s where this guide comes in.
Best Batteries for Tag Heuer Watches
When it comes to replacing your Tag Heuer watch battery, using high-quality, reliable options is crucial. Below are three of the best batteries for various Tag Heuer models—backed by trusted brands known for longevity and compatibility with Swiss-made movements.
Renata 371 Silver Oxide Battery
Best for most quartz Tag Heuer watches, including Formula 1 and Carrera models.
Why we picked it:
Renata is an official supplier for many Swiss watch brands, including Tag Heuer. The 371 offers consistent voltage and long-lasting power, making it perfect for high-precision movements.
Energizer 2032 Lithium Coin Cell
Best for modern digital or multifunction Tag Heuer models with larger power demands.
Why we picked it:
The CR2032 is a powerful lithium battery with a 10-year shelf life. Energizer ensures leak resistance and reliability, especially in watches with advanced features.
Sony SR920SW Silver Oxide Battery
Ideal for select Aquaracer and Link series models.
Why we picked it:
Sony’s silver oxide batteries provide stable output and are highly resistant to leakage. They’re also mercury-free, aligning with eco-friendly standards while maintaining premium performance.
How to Identify the Right Battery for Your Tag Heuer Watch
Finding the correct battery for your Tag Heuer starts with identifying your watch’s model number.
This number is usually engraved on the case back and often starts with letters like “WN,” “CA,” or “WAY.” Once you’ve found the model number, you can search for the official battery type listed in the user manual or through Tag Heuer’s customer support page.
Common Battery Types by Series
- Tag Heuer Formula 1: Renata 371 (SR920SW)
- Tag Heuer Carrera Quartz: Renata 364 (SR621SW)
- Tag Heuer Aquaracer Quartz: Renata 395 (SR927SW)
- Digital & Connected Models: Lithium CR2032 or rechargeable lithium-ion batteries
Key Tips for Identification
- Remove the Case Back: If you’re experienced or have the right tools, carefully open the case back to see the current battery model directly.
- Use a Watchmaker’s Loupe: Battery model numbers are small—magnification helps.
- Consult the Manual or Official Site: If in doubt, always cross-reference with official documentation.
Important Note
Never substitute battery types even if the size looks similar. Tag Heuer watches are finely tuned, and the wrong battery could damage the movement or affect water resistance.
By correctly identifying your watch’s battery, you’ll ensure reliable performance, accuracy, and longevity—avoiding common pitfalls that come from guesswork or incompatible options.
Tag Heuer Battery Replacement Guide: Step-by-Step Process
Replacing a Tag Heuer battery at home is possible with the right tools and careful handling.
While many watch enthusiasts prefer visiting a professional, DIY battery replacement can save time and money—provided you follow proper steps to protect the watch’s precision and integrity.
Tools You’ll Need
- Case back opener or watch knife (depending on the model)
- Plastic or non-magnetic tweezers
- Dust blower or soft brush
- New battery (ensure it matches the exact type)
- Watchmaker’s screwdriver set (if applicable)
- Case press (for snap-on case backs)
Step-by-Step Instructions
- Prepare a Clean Workspace: Use a soft cloth to avoid scratches and static.
- Open the Case Back:
- Snap-on: Use a watch knife carefully around the edge.
- Screw-down: Use a case back opener with adjustable prongs.
- Remove the Old Battery: Use plastic tweezers to lift it out gently. Never touch the new battery with your fingers—oils can reduce performance.
- Insert the New Battery: Ensure it’s placed in the same orientation. Double-check polarity.
- Inspect Seals and Gaskets: If the rubber gasket is worn or stretched, consider replacing it to maintain water resistance.
- Close the Case: Use a case press to ensure an even seal. Avoid using excessive force.
Final Tip
After installation, test the watch for functionality and reset the time. If the watch still doesn’t work, the issue might be with the movement or capacitor—requiring professional service.
How Long Do Tag Heuer Watch Batteries Last?
Tag Heuer watch batteries typically last between 2 to 5 years, depending on the model and usage.
The lifespan of your Tag Heuer battery is influenced by several factors, including the type of battery, the watch’s functions (e.g., chronograph, date, illumination), and how often you use them.
Average Battery Lifespan by Model
- Standard Quartz Models (e.g., Formula 1, Carrera Quartz): 2–3 years
- Chronograph Quartz Models: 2 years or less (due to extra energy drain)
- Connected Smartwatches: 1 day to several weeks (rechargeable lithium-ion batteries)
- Solar-Powered or Kinetic Models: 5+ years with proper charging
Factors That Reduce Battery Life
- Frequent use of chronograph or illumination features
- Exposure to extreme temperatures
- Water damage or seal failure (causes battery drain)
- Battery age at time of installation (always buy fresh stock)
Signs Your Battery Is Dying
- The second hand “jumps” in 4-second intervals (common low-battery indicator in quartz watches)
- Time becomes inaccurate
- Watch stops entirely
It’s a good idea to replace your battery proactively once you notice any of these signs—delaying can cause battery leakage, which may damage the movement.
To extend battery life, avoid prolonged exposure to heat, store the watch in a dry place, and minimize use of high-drain features unless needed. Choosing a premium-quality battery also ensures the longest possible run between replacements.
Where to Buy Authentic Tag Heuer Watch Batteries
Genuine Tag Heuer-compatible batteries can be purchased online or in-store from authorized retailers and watch service centers.
Choosing the right vendor is crucial. Cheap, unverified batteries can leak, damage your watch, or simply fail to deliver the longevity and accuracy your timepiece deserves.
Authorized Watch Repair Centers
- Ensure authenticity and professional installation.
- May include pressure testing and resealing for water resistance.
- Often more expensive but worth the reliability.
Official Tag Heuer Boutiques
- Access to genuine parts and batteries.
- Technicians on-site for battery replacement.
Trusted Online Retailers
- Amazon (Sold by Renata, Sony, Energizer Official)
- Watch Battery Source
- Esslinger.com
Ensure the seller has positive reviews and specializes in horology products.
Local Jewelers and Watch Shops
- Convenient and often knowledgeable about battery compatibility.
- Ask if they use certified batteries like Renata or Sony.
Warning Signs of Fake or Old Batteries
- Generic packaging or no branding
- No expiration date or manufacturing stamp
- Sold in bulk with no warranty
Pro tip: Always request batteries that are mercury-free and have a recent manufacturing date. Renata and Sony are preferred brands, as they’re often used by Swiss watchmakers, including Tag Heuer itself.
Buying from reputable sources ensures not only battery longevity but also the long-term health of your watch.
Common Mistakes to Avoid When Replacing a Tag Heuer Battery
Replacing a battery in a luxury watch like a Tag Heuer requires precision—simple mistakes can lead to costly repairs.
Whether you’re a DIY enthusiast or just curious, knowing what not to do is just as important as knowing the correct steps. These common pitfalls could compromise your watch’s performance or even void warranties.
Top Mistakes to Avoid
- Using the Wrong Battery Type
Even a slight variation in voltage or size can damage the movement. Always confirm the correct model for your exact watch series. - Touching the Battery with Bare Hands
Natural oils from your fingers can corrode contact points or shorten battery life. Use plastic tweezers or wear latex gloves. - Forgetting to Check the Gasket
The rubber gasket ensures water resistance. If it’s damaged or misaligned during closure, it can cause moisture damage inside the case. - Forcing the Case Back Shut
Many Tag Heuer watches require a press tool to evenly seal the case back. Forcing it can warp the case or damage the crystal. - Skipping Pressure Testing
Especially important for dive watches like the Aquaracer. Without pressure testing, water resistance can’t be guaranteed—even if the watch looks sealed. - Installing Expired or Low-Quality Batteries
Old stock or generic brands may not last long and are prone to leakage.
Final Tip
If you’re unsure at any step, it’s always safer to visit a certified watch technician. Protect your investment by avoiding shortcuts or improvisation.
Conclusion
Replacing a battery in your Tag Heuer watch doesn’t have to be intimidating—knowing the correct battery type, sourcing it from a reliable vendor, and following the right steps can keep your watch running flawlessly for years. From the precise Renata 371 for quartz models to the high-performance Energizer CR2032 for digital variants, using high-quality batteries ensures optimal performance and protects the integrity of your timepiece.
Whether you’re a seasoned collector or a first-time owner, this guide empowers you to handle battery replacements confidently—or at least know what to expect when visiting a pro.
Take care of your watch, and it will take care of your time.
Frequently Asked Questions About Tag Heuer Watch Batteries
What type of battery does my Tag Heuer watch use?
The battery type depends on your watch model. Most quartz models use silver oxide batteries like the Renata 371, while some digital and multifunction models use lithium coin cells like the CR2032. Always check the model number engraved on the case back and verify battery specs in the user manual or with a professional.
Can I replace a Tag Heuer battery myself?
Yes, many watch owners replace their batteries at home using the correct tools. However, if your watch is under warranty or has a high water resistance rating (like the Aquaracer), it’s recommended to have it done professionally to maintain its integrity.
How much does a Tag Heuer battery replacement cost?
Professional battery replacement typically costs between $30 and $80, depending on the model and whether resealing and pressure testing are included. DIY replacements can cost under $10 if you already have the tools.
How often should I replace the battery?
Every 2–3 years is typical for most quartz models. If your watch includes chronograph functions or backlighting, the battery may deplete faster. It’s best to replace the battery as soon as you notice signs like skipping seconds or a stopped movement.
Will changing the battery affect water resistance?
Yes. Opening the case can compromise the seal that keeps water out. It’s important to inspect or replace the gasket and have the watch pressure-tested after any battery replacement to maintain water resistance.