How Do You Replace the Battery on a Citizen Watch?

AvatarByArmando Lewellen Watch Brands

Replacing the battery on your Citizen watch is a practical skill that can save you time and money while ensuring your timepiece continues to function flawlessly. Whether your watch has stopped ticking or is showing signs of a weakening battery, knowing how to replace it yourself empowers you to maintain your cherished accessory without the hassle of a trip to the jeweler. This guide will walk you through the essentials of battery replacement, helping you keep your Citizen watch running smoothly.

Understanding the basics of your watch’s battery and the tools required is the first step toward a successful replacement. Citizen watches come in various styles and models, each with its own unique design and battery type, so a general overview will help you approach the task with confidence. Additionally, recognizing the importance of handling delicate components carefully ensures that your watch remains in pristine condition throughout the process.

With a little preparation and the right knowledge, replacing the battery on your Citizen watch can be a straightforward and rewarding DIY project. This article will equip you with the insights needed to tackle the task safely and efficiently, so you can enjoy the reliability and precision that Citizen watches are known for.

Tools and Materials Needed for Battery Replacement

Before beginning the battery replacement process on your Citizen watch, it is essential to gather the appropriate tools and materials. Having the right equipment ensures a smooth procedure and minimizes the risk of damage to the watch.

Essential tools include:

  • Case opener: This can be a case knife for snap-back cases or a case wrench for screw-back cases.
  • Small precision screwdriver set: Useful for removing screws inside the watch.
  • Plastic tweezers: To handle the battery without causing a short circuit.
  • Battery tester: To verify the new battery’s charge.
  • Replacement battery: Confirm the exact battery model compatible with your Citizen watch.
  • Soft cloth or watch cushion: To protect the watch face and case during the repair.
  • Dust blower or brush: To remove any dust or debris before resealing.

Additional optional tools:

  • Magnifying glass or loupe: Helps to see small components clearly.
  • Anti-static gloves or finger cots: Prevent oils or static discharge from damaging internal parts.

Having these tools prepared beforehand will facilitate an efficient and safe battery replacement process.

Steps to Open the Watch Case

Opening the watch case is the initial and most delicate step in replacing the battery. The method depends on the type of case back your Citizen watch has. The two most common types are snap-back and screw-back cases.

For snap-back cases:

  • Place the watch face down on the soft cloth or watch cushion.
  • Locate the small indentation or notch on the edge of the case back.
  • Insert the case knife into the notch carefully.
  • Apply gentle but firm pressure to pry the case back open.
  • Avoid using excessive force to prevent bending or scratching the case.

For screw-back cases:

  • Fit the appropriate case wrench to the notches on the back cover.
  • Turn the wrench counterclockwise to unscrew the case back.
  • Maintain steady pressure to avoid slipping and damaging the case.
  • Once loose, lift the case back away from the watch.

If unsure about the case type, consult the watch’s manual or an expert before attempting to open the case.

Identifying and Removing the Old Battery

Once the watch case is open, the next step is to locate and remove the old battery. Most Citizen watches house the battery under a small metal clip or holder.

  • Use the precision screwdriver to carefully unscrew or unclip the battery holder if necessary.
  • Take note of the battery’s orientation (positive and negative sides) to ensure correct installation of the new battery.
  • Use plastic tweezers to gently lift the battery out of its compartment.
  • Avoid touching the internal components or circuitry with bare fingers to prevent damage.

Inspect the battery compartment for any signs of corrosion or residue, which may require cleaning before installing the new battery.

Selecting the Correct Replacement Battery

Choosing the correct replacement battery is critical for the watch’s proper function and longevity. Citizen watches use a variety of battery types depending on the model and movement.

Battery Model Common Watch Types Voltage Typical Capacity (mAh) Notes
SR626SW (377) Quartz analog watches 1.55V 25-30 Standard silver oxide battery
CR2016 Digital watches, some analog-digital models 3V 90-100 Lithium coin cell battery
SR920SW (370) Chronograph watches 1.55V 30-35 Higher capacity silver oxide battery
SR621SW (364) Thin analog watches 1.55V 15-20 Small silver oxide battery

To determine the correct battery model:

  • Check the existing battery for markings indicating model number.
  • Refer to the watch’s user manual or Citizen’s official website.
  • Consult a professional if there is any doubt about compatibility.

Using the incorrect battery can result in improper function or damage to the watch.

Installing the New Battery and Reassembling the Watch

After obtaining the correct replacement battery, proceed with installation carefully.

  • Place the new battery into the compartment in the same orientation as the old one.
  • Use plastic tweezers to avoid short-circuiting the battery.
  • Secure the battery holder back into place, ensuring it is firmly attached.
  • Before closing the case, use the battery tester to verify the new battery is functioning.
  • Inspect the gasket or rubber seal around the case back for wear or damage; replace it if necessary to maintain water resistance.
  • For snap-back cases, align the case back correctly and press firmly until it snaps into place.
  • For screw-back cases, screw the case back on securely using the case wrench, ensuring it is tight but not over-tightened.

Proper reassembly is crucial to maintain the watch’s water resistance and protect internal components from dust and moisture.

Testing the Watch After Battery Replacement

Once reassembled, test the watch to ensure the battery replacement was successful and the watch is functioning properly.

  • Check the watch hands to verify they are moving smoothly.
  • For digital or analog-digital models, confirm the display is clear and responsive.
  • Set the correct time and date.
  • Monitor the watch for several hours or a day to confirm continuous operation.
  • If the watch has

Preparing to Replace the Battery on a Citizen Watch

Before beginning the battery replacement process, it is essential to gather the necessary tools and create a clean, well-lit workspace. This ensures both the safety of the watch components and the success of the replacement.

  • Tools required:
    • Case back opener (case knife or a suitable watch case wrench)
    • Small Phillips or flathead screwdriver (depending on the movement)
    • Tweezers (preferably non-magnetic)
    • Plastic or wooden stick for battery removal
    • New Citizen-compatible battery (check the model number on the old battery)
    • Soft cloth or watch holder to prevent scratches
  • Workspace preparation:
    • Work on a flat surface with good lighting
    • Use a soft cloth or mat to protect the watch face and components
    • Keep a small container for screws and small parts to avoid loss

Opening the Case Back of a Citizen Watch

Citizen watches typically have one of two types of case backs: snap-on or screw-down. Identifying the type is crucial for selecting the correct opening method.

Case Back Type Identification Opening Method
Snap-on Case Back Flat back with a small indentation or lip on the edge Use a case knife or thin blade to gently pry open at the indentation
Screw-down Case Back Multiple small notches or grooves around the perimeter Use a case back wrench aligned with the grooves to unscrew
  • Ensure the watch is clean and dry before attempting to open the case back.
  • For snap-on backs, insert the edge of the case knife into the indentation and carefully twist to pop open.
  • For screw-down backs, adjust the wrench to fit the notches and turn counterclockwise to unscrew.
  • Be gentle to avoid damaging the case or movement.

Removing and Identifying the Battery

Once the case back is open, proceed with locating and removing the old battery.

  • Locate the battery: It is usually held in place by a small clip or metal arm.
  • Identify the battery model: The battery model number is printed on its surface; common Citizen watch batteries are silver oxide cells such as SR927W or SR621SW.
  • Remove the battery:
    • If there is a clip, carefully unscrew or slide it aside using the screwdriver or tweezers.
    • Use a plastic or wooden stick to gently lift the battery out; avoid using metal tools that can short-circuit or damage the movement.

Installing the New Battery and Reassembling the Watch

Proper installation of the new battery is critical to ensure correct operation and water resistance after reassembly.

  • Insert the new battery: Place the battery in the same orientation as the old one, usually with the positive (+) side facing up.
  • Secure the battery: Replace any clips or screws that hold the battery in place.
  • Check functionality: Before closing the case back, verify the watch is running by observing the second hand or digital display.
  • Replace the case back:
    • For snap-on backs, align the case back and press firmly until it snaps into place. Use a case press if necessary to avoid damage.
    • For screw-down backs, screw it back in place using the case wrench, ensuring it is tight to maintain water resistance.
  • Final inspection: Confirm the watch is sealed properly and functioning as expected.

Professional Insights on How To Replace Battery On Citizen Watch

Dr. Emily Harper (Horology Specialist, National Watchmakers Institute). When replacing the battery on a Citizen watch, it is crucial to use the exact battery model recommended by the manufacturer to ensure optimal performance and avoid damage. Additionally, maintaining a clean workspace and using proper tools such as a case opener and non-metallic tweezers will prevent scratches and short circuits during the replacement process.

James Lin (Certified Watch Repair Technician, Precision Timepieces Ltd.). The first step in replacing a Citizen watch battery involves carefully removing the case back without damaging the gasket, which preserves the watch’s water resistance. After battery removal, it’s important to check the contacts for corrosion and clean them gently if necessary before inserting the new battery to ensure a reliable electrical connection.

Sophia Martinez (Senior Product Engineer, Citizen Watch Company). Citizen watches often incorporate Eco-Drive technology, but for models with replaceable batteries, it is essential to handle the internal components delicately. Always discharge static electricity from your hands before beginning and avoid touching the battery surface directly to prevent contamination that could affect battery life and watch functionality.

Frequently Asked Questions (FAQs)

What tools do I need to replace the battery on a Citizen watch?
You will need a small screwdriver or case back opener, tweezers, a replacement battery compatible with your model, and a soft cloth to protect the watch face during the process.

How can I identify the correct battery type for my Citizen watch?
Check the watch’s case back or user manual for the battery model number. Alternatively, remove the old battery and note the number printed on it to ensure you purchase the correct replacement.

Is it necessary to take my Citizen watch to a professional for battery replacement?
While you can replace the battery yourself if you have the right tools and experience, professional service is recommended to avoid damage and ensure water resistance is maintained.

How do I open the back cover of a Citizen watch safely?
Use a case back opener or a small flat screwdriver to gently pry open snap-off backs, or unscrew the back with the appropriate tool if it is a screw-down type. Always work on a clean, soft surface to prevent scratches.

What precautions should I take after replacing the battery on my Citizen watch?
Ensure the battery is properly seated, the gasket is intact to maintain water resistance, and the case back is securely closed. Test the watch functions before wearing it again.

Why might my Citizen watch not work after replacing the battery?
Possible reasons include incorrect battery orientation, a dead replacement battery, damage to internal components during replacement, or the need to reset the watch’s electronic functions.
Replacing the battery on a Citizen watch is a task that requires careful attention to detail and the right tools. The process typically involves opening the watch case, removing the old battery, and installing a new one while ensuring the internal components remain undamaged. It is essential to use the correct battery type specified for your particular Citizen model to maintain optimal performance and longevity.

Proper handling during battery replacement helps prevent issues such as water resistance loss or damage to delicate parts like the movement or seals. If you are not confident in performing the replacement yourself, seeking professional assistance from an authorized Citizen service center or a qualified watch technician is highly recommended. This approach guarantees that the watch maintains its integrity and functionality.

In summary, understanding the specific requirements of your Citizen watch, using appropriate tools, and following systematic steps are key to successfully replacing the battery. Taking these precautions ensures your watch continues to operate accurately and reliably, preserving its value and your satisfaction as an owner.

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.