10304339 - This is the correct rechargeable battery for Casio module: 5040. The battery has the following specifications:
Height: 2mm
Diameter: 9.5mm
Voltage: 2.4V
System: Lithium
The battery is rechargeable and can last for approx. 5 months without light.
This watch battery is also known by numbers: CTL920F.
April 7, 2025
