back up battery replacement

[logger]

Does anyone know where to replace the backup battery for memory? tree 350 with delta 40 control.

I think it would be on the mother board but cant find where it plugs into. The original 1 must have been taken off.

[T0DD]

My battery is AA size located in the cabinet on the side of the mill, however, I have a 1993 J425.
Todd

[logger]

Hmmm..... Mine is an j350 I think an 98. My battery in enclosed in a small black plastic box with 2 wires about 3" long with a small connector on the side.