I agree with Marshall - no worries. The only possible glitch I can think of is if the charging circuit does not simply charge all the batteries in series. I can't imagine that a golf cart would employ individual battery management, which is a fairly sophisticated approach, but it's worth a quick look as a just-in-case.can any one tell me if I have to change anything in my golf cart to switch it from using 6-6v batt. to 3-12v batt. ?
Why?You lose run-time, unless the 12v batteries have twice the AH rating as the original 6v.