It is used for back up the clock, not for settings. Settings are stored in non-volatile RAM, so There will be no impact even if the back up battery runs out. When disposing of this device, please refer to the "General" section of the instruction manual and remove the batteries.
If you register as a CHINO Web member, you will be able to view the product's instruction manual. If you wish, we will send you the latest information on CHINO products via email.