Here is the reference of the button cell: CR2032 with solder lugs.

Nominal voltage 3V
Capacity 240mAh
Type of termination Solder lugs
Diameter 20mm

You will need to unsolder the two wires from the old battery and re-solder them onto the new one, then insulate the battery with plastic.

https://fr.rs-online.com/web/p/batteries-buttons/2841829