What battery are you talking about?

The memory battery should be changed every three years by the service centre. After three years, the machine may lose programming if unplugged and stored. Each time the battery is changed, the service technician should put a new battery reminder sticker on the machine. The battery will normally hold the program memory for around two months if the machine is unplugged. After that, it will need a full re-program

Registerman
April 2013