Casio Pathfinder watches recharge while you wear them with the help of a small solar cell on the face of the watch. This means that your watch can charge anywhere where there is natural or artificial light. Despite the constant charging, it is possible for your rechargeable watch battery to wear down over time. You can spend £19 to send your Pathfinder to Casio for battery replacement or you can perform the repair yourself for the cost of the battery. Most Casio Pathfinder solar-powered watches use a CTL1616 battery that can be purchased from your local jewellery or retail store.
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Things you need
- Solar watch battery
- Optical-sized Philips screwdriver
- Small plastic tweezers
- Small metal tweezers
Choose a quiet, well-lit room where you can replace the battery in your Casio Pathfinder watch. Prepare a table, desk or other clean, flat surface where you can perform your watch repair. Put down a soft cloth or piece of craft felt to protect the face of your Casio Pathfinder watch from being scratched during the battery installation process.
Set your Casio Pathfinder watch facedown on the soft cloth or craft felt. Use an optical-sized Philips screwdriver to remove the four screws that secure the watch back to the body of the watch. Set the screws aside, but don't lift the watch back.
Slide the watch back off of the body of the watch very slowly. There are three important springs held underneath the watch back; it is essential to remove the watch back slowly to avoid losing them.
Lift the three springs out of your Casio Pathfinder watch using a small pair of metal tweezers. Take note of the length and placement of the springs as you remove them. Set the springs aside with the other disassembled watch components.
Take the black rubber protective disk out of your Casio Pathfinder to reveal an identically-shaped white plastic disk. Remove the white plastic disk and set it and the black rubber disk aside. Use your metal tweezers, if necessary, to lift out the rubber and plastic disks.
Release the battery strap that holds the battery in place in your Casio Pathfinder watch by pushing the battery strap latch to the left. Remove the old battery from your Casio Pathfinder using a pair of small plastic tweezers.
Pick up your replacement watch battery with the small plastic tweezers and insert it into the battery compartment of your Casio Pathfinder watch. Replace the battery strap and push it gently with the tip of your plastic tweezers to snap the latch in place.
Touch the "-" and "AC" terminals on your Casio Pathfinder watch with the tips of your metal tweezers for at least two seconds. This helps ensure that your watch will work properly once reassembled.
Put your Casio Pathfinder back together to complete the new battery installation. Start by replacing the white plastic disk, followed by the protective black rubber disk. Use your small metal tweezers to replace the small watch springs in their correct locations. Replace the back cover of your Casio Pathfinder, insert the four screws and tighten them with your optical-sized Philips screwdriver.
Tips and warnings
- Keep a small magnet on your work surface to hold loose watch screws and springs while you replace the battery in your Casio Pathfinder.
- Casio recommends that their watch batteries be changed by experienced professionals. Though it is possible to install a new battery in a Casio Pathfinder, replacing the battery yourself may void the warranty on your watch.
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