I am running a DT-Center with fanuc series O Mate M , without problem for a good couple of years . But now the Batteries are going....and I cant find 'em ! Ive had a good look in the cabinet but to no avail , plus I dont have the manual for that series of fanuc gear . Only had a few battey alarms up to now but they are getting more frequent , plus BAT is displayed on screen constantly . Maybe a daft question but what do these batteries power ? I assume they are power for some sort of memory , but what data is stored in there ? Ta People, great site .