Since we are stuck at home, I have been cataloging my 14 pinball machines (Name, serial #, Battery type, Battery Quantity, Last changed, Manual reference and notes).
On page E-14 of the Hobbit manual and page E-11 of the Dialed In! manual, it notes that the battery is CR2032. (I assume this is true with all of their games but only have these two.)
I assumed these batteries would last for 10 years or so. I assumed I would change it with the power off when it died. But the manual states that the battery MUST be changed with the power on (16 steps). My Hobbit is over 4 years old and my Dialed In! is approaching 3 years. So I guess I should follow the directions.
I am posting this just in case someone is not aware of the method to change the batteries.
Both manuals state:
If your game's CPU battery discharges below 3V (or if you remove the battery) while the game is turned off, all BIOS settings will return to factory defaults. As a result, your game will not boot properly the next time you attempt to power it up. In this case, contact JJP technical support for assistance in restoring your CPU BIOS settings and getting your game to successfully boot again.