Voltage fluctuation on 2014 800

Wonder if any of you folks watch the volt meter when you are riding? We run our heated clothes on the RZR when we are out in the cold weather. The voltage jumps back and forth from 11.7 to 13.9 with the gear turned on. We’ll turn it off and it takes awhile for the voltage to come back up sometimes, other times it will jump right back to 13 or so. It fluctuates most of the time, just more when there is a load on it. Worries me, last RZR we had had a voltage regulator failure so this keeps me on my toes. We’ve not had it run the battery down yet.
Any input and advice would be appreciated.