Replacing your watch battery at home can save time and money but improper handling can damage seals, compromising water‑resistance. At Watch Repair Piccadilly, we ensure your watch stays fully sealed and shop-ready. Here’s how to do it safely yourself, step by step.
1. Gather the Right Tools 🧰
- Case opener – case knife or Jaxa wrench for screw‑back or snap‑back watches.
- Plastic tweezers – to prevent short‑circuits.
- Silicone grease – critical for lubricating seals and maintaining water resistance.
- Replacement battery & gaskets, plus a watch holder or soft cloth to avoid accidental damage.
2. Open the Case Carefully
- Identify the case back type (snap, screw, or screw-on with small screws).
- Use correct tool (blade, screwdriver, or wrench) to gently open it avoid metal slip to protect the gasket groove.
3. Check & Lubricate Gaskets
- Inspect the gasket for cracks or deformation replace if needed.
- Apply a thin layer of silicone grease around the entire gasket; this aids sealing and prevents shrinkage.
Remember: A fresh gasket and lubrication are keys to keeping your watch water-tight after a battery replacement.
4. Remove the Old Battery with Caution
- Remove gently using plastic tweezers; avoid contact with movement and metal tools.
- Note the battery orientation (positive/negative) to replicate correctly with the new one.
5. Insert the New Battery & Clean Contacts
- Place the new battery precisely in the same orientation.
- If you notice any residue on contacts, gently clean with a battery-saver pen or cotton swab.
6. Close the Case & Maintain Seals
- Align gasket properly in its groove.
- Press snap-on lids firmly until you hear a click, or use a case wrench to tighten screw-down backs
- For screw-on loose backs, reinsert screws carefully.
7. Final Checks & Water‑Resistance Test
- Visually inspect the gasket seal for gaps.
- Perform pressure testing if possible to confirm water integrity.
- Note: Without correct sealing, water resistance can be significantly compromised especially for daily wear or swimming.
✅ Quick Reference Table
| Step | Action | Risk if Skipped |
|---|---|---|
| 1 | Use proper tools | Scratches, tool slippage |
| 2 | Grease gasket | Water ingress, corrosion |
| 3 | Plastic tweezers used | Short circuits, damage to case interior |
| 4 | Replace gasket if worn | Loss of waterproofing |
| 5 | Case pressed back correctly | Seal misalignment, compromising watch |
Why You Should Trust Piccadilly’s Pros
Silicone grease, clean environment, gasket replacement, and pressure testing we include all these to guarantee your watch is waterproof and ready for use. Trust us with everything from battery swaps to full servicing.
🔗 Book your battery replacement with seal check today we’re right in Piccadilly Circus Station.
1. Can I replace my watch battery myself without damaging water seals?
Yes—using plastic tools, silicone grease for the gasket, and correct case‑back pressing ensures safe replacement.
2. Why is silicone grease used when changing watch batteries?
It prevents gasket drying, keeps water resistance, and ensures seals seat correctly.
3. How often should I replace a quartz watch battery?
Typically every 2–5 years, or sooner if you notice ticking irregularities .
4. What if I damage the gasket during DIY battery replacement?
Replace it immediately. A damaged gasket compromises water resistance and may require professional pressure testing.
5. Should I pressure test my watch after replacing the battery?
Yes, professional pressure testing confirms the seals are intact, especially for waterproof watches.
About Me:
My name is Joel Britos and I am a highly respected watch servicing expert with over 25 years of hands-on experience in the fine art of horology. As the lead technician at Watch Repair Piccadilly, I have built a reputation for precision, integrity, and heritage craftsmanship.
Having serviced thousands of timepieces from Rolex and Omega to Cartier and Breitling.I bring an unmatched level of expertise to vintage restorations, movement overhauls, ultrasonic cleaning, and luxury watch diagnostics.
A trusted figure in London’s Piccadilly watch repair community, I am passionate about helping collectors and everyday watch enthusiasts keep their timepieces in peak condition.
📍 Location:
Watch Repair Piccadilly
Inside Piccadilly Circus Underground Station
London W1J 9HP, United Kingdom
📧 Email: info@watchrepairpiccadilly.co.uk
📞 Phone: +44 20 3006 2072
