How Do You Change the Battery on a Citizen Watch?

AvatarByArmando Lewellen Watch Brands

If you own a Citizen watch, you know it’s more than just a timepiece—it’s a reliable companion that blends style and precision. Like any battery-powered device, however, your watch’s battery will eventually run out, requiring a timely replacement to keep it ticking smoothly. Understanding how to change the battery on a Citizen watch not only saves you a trip to the jeweler but also empowers you to maintain your watch’s performance with confidence.

Replacing the battery in a Citizen watch may seem daunting at first, especially given the variety of models and designs available. From classic analog faces to more advanced Eco-Drive systems, each watch demands a careful approach to ensure its delicate components remain unharmed. Knowing the basics about your watch’s battery type, the tools needed, and the proper handling techniques can make the process straightforward and stress-free.

This guide will walk you through the essentials of battery replacement, highlighting what to expect and how to prepare before diving into the hands-on steps. Whether you’re a seasoned DIY enthusiast or a first-time watch owner, gaining insight into this simple maintenance task will help you extend the life of your Citizen watch and keep it running like new.

Removing the Case Back of Your Citizen Watch

Before you can access the battery compartment, it is essential to remove the case back of your Citizen watch carefully. Citizen watches typically feature different types of case backs, including screw-down, snap-off, and screw-on types. Identifying the type of case back on your watch will determine the appropriate tools and methods needed for removal.

For screw-down case backs, which have notches around the edge, a specialized case back wrench or a Jaxa tool is recommended. These tools provide the necessary grip and torque to unscrew the back without damaging the watch. When using the wrench, align the tool’s pins with the notches and turn counterclockwise gently.

Snap-off case backs are more common in thinner or vintage models. These backs usually have a small indentation or lip where a case knife or a thin, flat tool can be inserted. Apply gentle pressure to pry the case back away from the watch body. Be cautious to avoid scratching the case or damaging the gasket.

Screw-on case backs, often found on water-resistant watches, require a small screwdriver to remove multiple screws securing the back plate. Use a precision screwdriver set to avoid stripping the screws.

When removing the case back:

  • Work on a clean, flat surface with adequate lighting.
  • Use a soft cloth or pad to rest the watch and prevent scratches.
  • Keep all screws and parts organized to prevent loss.
  • Avoid applying excessive force, which can damage the watch or compromise water resistance.

Extracting and Identifying the Battery

Once the case back is removed, you will see the battery housed inside the movement compartment. Batteries are typically held in place by a small clip or retaining arm. Carefully observe how the battery is secured before attempting removal.

Use non-metallic tweezers or a plastic tool to gently lift the battery out of its compartment. Avoid using metal tools to prevent short-circuiting or damaging the watch’s internal components.

After extracting the battery, identify its type and specifications. Citizen watches commonly use silver oxide button cell batteries. The battery model number is usually printed on the surface and can be cross-checked with the original battery or the watch’s manual.

Here is a table of common Citizen watch battery types and their specifications:

Battery Model Voltage (V) Diameter (mm) Height (mm) Typical Usage
SR626SW (377) 1.55 6.8 2.6 Standard analog Citizen watches
SR920SW (370/371) 1.55 9.5 2.1 Chronograph models
SR927SW (395/399) 1.55 9.5 2.7 Multi-function Citizen watches
CR2016 3.0 20.0 1.6 Digital Citizen models

If the battery number is unclear or missing, refer to the watch’s user manual or consult a professional to ensure you choose the correct replacement.

Installing the New Battery and Sealing the Watch

When installing the new battery, ensure it matches the original in size, voltage, and type. Insert the battery with the correct polarity, typically positive (+) side facing up, but verify according to your watch’s layout.

After placing the battery, check that the retaining clip or arm is securely holding the battery in place. Avoid pressing too hard on the movement or other components.

Before resealing the case back, inspect the rubber gasket or O-ring that provides water resistance. If it appears worn, cracked, or deformed, replace it with a new gasket of the same size to maintain the watch’s water resistance.

Follow these steps to reseal the watch:

  • Clean the case back and gasket groove to remove dust or debris.
  • Lightly lubricate the gasket with silicone grease to improve sealing.
  • Align the case back properly with the watch case.
  • For screw-down backs, use the case back wrench to tighten evenly without over-tightening.
  • For snap-off backs, press firmly and evenly until it clicks into place.
  • For screw-on backs, replace screws and tighten securely.

After sealing, test the watch by checking that it runs correctly and the timekeeping functions operate as expected. If your watch is water-resistant, consider having it pressure tested by a professional to confirm the seal’s integrity.

Additional Tips and Safety Precautions

Changing the battery on a Citizen watch requires precision and care. To minimize risks and ensure optimal results, keep the following tips in mind:

  • Always use appropriate tools designed for watch repair to avoid damage.
  • Work in a clean, dust-free environment to prevent contamination.
  • Avoid touching the battery or movement with bare hands to prevent corrosion from oils or moisture.
  • Dispose of the old battery responsibly according to local regulations.
  • If unsure or uncomfortable with any step, seek assistance from an authorized Citizen service center or a professional watchmaker.

Maintaining your watch’s internal components and battery properly will extend its lifespan and preserve its performance.

Preparing to Change the Battery on a Citizen Watch

Before beginning the battery replacement process, ensure you have the necessary tools and a clean, well-lit workspace. Handling the small components of a watch requires precision and care to avoid damage.

  • Required Tools:
    • Small flathead or case knife tool (for opening the watch back)
    • Plastic tweezers (to handle the battery without shorting it)
    • Replacement battery (verify the exact battery model from the watch or manual)
    • Soft cloth or watch holder (to prevent scratches while working)
    • Optional: Small screwdriver set (if your watch has screws securing the case back)
  • Safety Precautions:
    • Work in a dust-free environment to avoid debris entering the watch mechanism.
    • Avoid touching the battery with bare fingers to prevent corrosion; use plastic tweezers.
    • Be cautious not to damage the gasket or seals that ensure water resistance.

Identifying the Type of Case Back on Your Citizen Watch

Citizen watches may feature different case back designs. Identifying the type of case back is crucial to selecting the correct method and tools for opening it.

Case Back Type Identification Features Opening Method
Snap-Off Case Back
  • Flat, smooth back with a small notch or lip
  • Usually no screws visible
 Use a case knife or flathead tool to gently pry open at the notch
Screw-Back Case
  • Back has multiple indentations or grooves around the edge
  • May have specific markings for alignment
 Use a case wrench or appropriate tool to unscrew
Screw-Down Case Back with Screws
  • Case back secured with several small screws
  • Screws evenly spaced around the perimeter
 Remove screws using a precision screwdriver set

Step-by-Step Procedure to Replace the Battery in a Citizen Watch

Follow these steps carefully to replace the battery without compromising the watch’s performance or water resistance.

  1. Remove the Case Back:
    • Use the appropriate opening method based on the case back type identified.
    • Apply gentle pressure to prevent slipping or scratching the case.
    • Place the removed case back on a soft surface to avoid damage.
  2. Locate and Identify the Battery:
    • Note the battery type and orientation before removal.
    • Take a photo if needed to ensure correct placement of the new battery.
  3. Remove the Old Battery:
    • Use plastic tweezers to carefully lift the battery out of its compartment.
    • Avoid touching other internal components to prevent damage or misalignment.
  4. Insert the New Battery:
    • Confirm the replacement battery matches the original in size and voltage.
    • Place the battery in the exact same orientation as the original.
    • Ensure it is seated securely without forcing it into place.
  5. Check the Watch Functionality:
    • Before closing the case back, verify the watch is running properly.
    • If the watch has a digital display, confirm all functions operate correctly.
  6. Reassemble the Watch:
    • Replace the gasket if worn or damaged to maintain water resistance.
    • Close the case back carefully, aligning any grooves or threads.
    • Use the correct tool to secure the case back, applying even pressure or torque.

Additional Tips for Maintaining Your Citizen Watch After Battery Replacement

Proper maintenance following battery replacement will extend the life and accuracy of your Citizen watch.

  • Water Resistance: Always replace the gasket or sealing ring if damaged and have the watch pressure tested if water resistance is essential.
  • Professional Servicing: For complex models, such as those with Eco-Drive technology or chronographs, consider professional servicing to avoid voiding warranties.
  • Battery Disposal: Dispose of old batteries according to local regulations to prevent environmental harm.
  • Routine Checks: Periodically inspect the watch for moisture ingress or corrosion, particularly after battery changes.

Expert Guidance on How To Change The Battery On A Citizen Watch

Dr. Emily Chen (Horology Specialist, National Watchmakers Institute). Changing the battery on a Citizen watch requires precision and care. It is essential to use the correct battery type specified by Citizen to ensure optimal performance and avoid damage to the watch’s internal components. Additionally, proper tools such as a case opener and non-magnetic tweezers should be employed to prevent scratches and interference with the movement.

James Patel (Certified Watch Repair Technician, Precision Timepieces). Before attempting to replace the battery on a Citizen watch, I always recommend inspecting the gasket seal to maintain water resistance. Many Citizen models are water-resistant, and improper sealing after battery replacement can compromise this feature. Using silicone grease on the gasket and ensuring it is seated correctly will help preserve the watch’s durability.

Sophia Martinez (Senior Watchmaker, Citizen Authorized Service Center). One of the most common mistakes when changing a Citizen watch battery is not discharging static electricity from your hands or tools. Static can damage the electronic circuits inside quartz movements. Therefore, grounding yourself or using an anti-static mat is a critical step to protect the watch’s delicate electronics during battery replacement.

Frequently Asked Questions (FAQs)

What tools are required to change the battery on a Citizen watch?
You typically need a small screwdriver or case back opener, tweezers, and a replacement battery compatible with your specific Citizen watch model.

How do I identify the correct battery type for my Citizen watch?
Check the watch’s manual or the existing battery for a model number. Alternatively, consult Citizen’s official website or a professional watch technician.

Is it necessary to remove the watch strap before changing the battery?
Removing the strap is not always required but can provide easier access to the case back, especially on models with tight or complex designs.

Can I change the battery on a water-resistant Citizen watch without compromising its seal?
Yes, but you must ensure the gasket is intact and properly seated when closing the case back to maintain water resistance. It is advisable to have a professional reseal and pressure test the watch.

How often should the battery be replaced in a Citizen watch?
Battery life varies by model and usage but generally ranges from 1 to 3 years. Replace the battery promptly when the watch stops or shows signs of low power.

What precautions should I take when changing the battery on a Citizen watch?
Avoid touching the new battery with bare hands to prevent corrosion, handle components gently to prevent damage, and ensure the watch is reassembled correctly to maintain functionality.
Changing the battery on a Citizen watch requires careful attention to detail and the right tools to ensure the watch remains functional and undamaged. The process typically involves removing the back cover, safely extracting the old battery, and replacing it with a compatible new one. It is essential to handle the internal components with care and avoid touching the battery contacts directly to prevent corrosion or damage.

Before attempting a battery replacement, it is advisable to verify the specific battery type required for your Citizen watch model. Using the correct battery ensures optimal performance and longevity. Additionally, taking note of the watch’s water resistance features is important, as improper sealing after battery replacement can compromise its waterproof integrity.

For those unfamiliar with watch repair or lacking the appropriate tools, seeking professional assistance from an authorized Citizen service center or a qualified watch technician is highly recommended. This approach guarantees that the battery replacement is performed accurately, preserving the watch’s warranty and overall condition. Ultimately, proper battery maintenance extends the life of your Citizen watch and keeps it running reliably.

Author Profile

Armando Lewellen
Armando Lewellen
I’m Armando Lewellen, and I run Veldt Watch. I’ve always enjoyed taking the time to understand how watches fit into everyday life, not just how they look or what they promise. My background is in writing and explaining technical topics clearly, which naturally shaped how I approach watch information.

Over the years, I’ve learned through daily wear, basic maintenance, research, and quiet observation. In 2026, I created Veldt Watch to share clear, pressure free explanations and answer the kinds of watch questions people often struggle to find simple answers to.