How to Change a Battery on a Phys Watch
Casio Phys watches use a small solar cell on the face of the watch to continuously recharge the watch's internal battery. Even with frequent solar charging, the battery in your Casio Phys watch will eventually weaken to the point that it needs to be replaced. Casio recommends that you have your Phys solar watch batteries changed by a Casio professional, which could cost up to $50, but the adventurous do-it-yourselfer can perform this simple watch repair at home for a fraction of the cost. Does this Spark an idea?
Other People Are Reading
Things You'll Need
- Watch pin removal tool or thumbtack
- Replacement solar watch battery
- Optical-sized Phillips screwdriver
- Optical-sized flathead screwdriver
- Small metal tweezers
- Small plastic tweezers
Instructions
-
-
1
Remove your Casio Phys watch band. The band is secured to the top and bottom of the watch face with small metal pins. Push out the pins with a watch pin removal tool or thumbtack to free the watch band. Set the band and pins aside until your watch repair is complete.
-
2
Use an optical-sized Philips screwdriver to remove the four screws that hold the back of your Casio Phys watch in place. Set the screws aside and slowly remove the back of the watch.
-
-
3
Look into the watch to locate three small, vertically-placed springs. Lift out the springs with a pair of small metal tweezers. Make a note of the placement and length of each spring.
-
4
Pull the black rubber cushion out of your Casio Phys watch. Remove the identically-shaped white plastic panel located underneath the black rubber cushion as well. Reserve these pieces for reassembly.
-
5
Locate the metal battery strap that holds your Casio Phys watch battery in place. The battery strap is secured with a small latch; push the latch to the left with an optical-sized flathead screwdriver to release it.
-
6
Lift the spent watch battery out of the watch's battery compartment with a pair of plastic tweezers. Snap the replacement battery into the battery compartment, making sure to only handle the batteries with the plastic tweezers. Push down the battery strap to hold the new battery in place.
-
7
Short the "AC" and "-" terminals on your Casio Phys watch by touching the terminals with metal tweezers for at least two seconds. This is a very important step in the battery replacement process and must be completed in order for the watch to function properly.
-
8
Reverse the disassembly directions to reassemble your Casio Phys watch. Replace the white plastic panel and the black rubber cushion. Use tweezers to return the three watch springs to their proper positions. Replace the back of your Casio Phys watch and then insert and tighten the screws.
-
1
Tips & Warnings
Most Casio solar watch models use CTL1616 batteries that can be purchased from your local jewelry or retail store. Before purchasing a replacement watch battery, consult your watch's user manual to determine the specific type of battery it needs.
Casio recommends that their solar watch batteries be replaced by authorized Casio watch repair specialists. Changing the battery in your Casio Phys watch without the assistance of a professional may void its warranty.
References
Resources
- Photo Credit Yellow waterproof watch image by Christopher Meder from Fotolia.com
