I have a 2011 HAAS TM1P mill and I have read some of the other threads about battery replacement. My battery is easy to get at on the upper board on my machine, no need to remove any other boards.
I have 3 questions: #1- If I leave the machine on can I replace the battery without loosing memory or do I still need a second battery connected??
#2- I see a small white 4 pin connector just below the battery, is this the place to plug in the 2nd battery??
#3- Where do I get this 2nd battery with the plug??

Thanks, John Hooper / Hooper race engines