Question about Casio PRG-40T-7 Pathfinder

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How to change battery in Casio wave ceptor4305

Have got back of case off ok but battery appears to be 'locked' under a metal strap, and I can't figure out how to extract it! (unwilling to use force!)

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If there is no any screws holding that 'metal strap' then carefully check both ends of it. You will notice that the ends (or one end) are snaped over the little plastic hooks. Take pointed tweezers and push that end outwards (away from battery) and the contact (metal strap) will pop out.
After battery replacement, just push the contact back into place till it fixes.
If there are screws holding the contact, just undo them.
Be quick when replacing battery- you have 2 or 3 minutes to do that, otherwise all data will be lost and you will need to reset watch completely.

Posted on Dec 20, 2008

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1 Answer

How di i change the batteries in my Casio Pathfinder 2782


  • 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.

  • 2

    Set your Casio Pathfinder watch face-down 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.

  • 3

    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.

  • 4

    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.

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  • 6

    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.

  • 7

    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.

  • 8

    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.

  • 9

    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.


  • Best regards. Jewel

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    Thank you for contacting FixYa.
  • 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.

  • 2

    Set your Casio Pathfinder watch face-down 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.

  • 3

    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.

  • 4

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  • 5

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  • 6

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  • 7

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  • 9

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  • Best regards. Jewel

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    Did you try this?:

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    Rate, please.

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