Introduction
The watch contains a small, 300mAh lithium-ion battery. Though these batteries will generally last for years, they do have a limit to the number of times they can be charged. As the battery grows older and is charged repeatedly, it may become less and less able to hold a charge. When this happens, replace the battery.
Tools
- 
                  
                  - 
            Press the watchband down against the work surface. 
- 
            Press the tip of a flathead screwdriver against the edge of the spring-loaded holding pin. 
 
- 
            
- 
                  
                  - 
            With the spring-loaded pin pressed in, the watch band should release easily. 
- 
            Gently pull the band away from the body of the watch. 
- 
            Repeat steps 2 and 3 for the opposite side. 
 
- 
            
- 
                  
                  - 
            With the watch laying face-down, locate the four screws. They are located on the back of the watch, at the four corners. 
 
- 
            
- 
                  
                  - 
            With the watch’s back cover pried loose, gently lift it away from the front half of the watch. 
 
- 
            
- 
                  
                  - 
            Locate the battery on the back half of the disassembled watch body. It is rectangular in shape and located just above the window for the heart monitor. 
 
- 
            
- 
                  
                  - 
            Locate the battery’s electrical contacts. They are located next to the heart rate monitor. They roughly form a “+” shape. 
- 
            Using the plastic opening tool, gently pry the contacts away from the plastic channel in which they fit. 
 
- 
            
- 
                  
                  - 
            Gently work the plastic opening tool under the battery. 
- 
            Using the plastic opening tool, gently pry the battery up. 
 
- 
            
To reassemble your device, follow these instructions in reverse order.
7 comments
Indicate the tools needed.
Indicate screw measurements to nearest mm.
This is neat and helpful, but where do I find a replacement battery?
Be sure to proofread carefully.
Dan Brown -