I have a rough idea but I'd like a few other opinions. I was riding today with my Gerbing jacket and my voltage ( at about 5500 rpm ) is about 12.8 to 13.3 as I ride. When I hooked up my heated gloves the voltage would drop to 12.7 to a low of 12.1 while riding, of course at idle it would be 10.2. My question is: what voltage do I need to run all day without discharging the battery? I am thinking since the battery is normally 12.5 to 12.7, anything lower would be bad. Do you all agree? BTW, I have my low beams ( both ) on while I ride. Maybe I need to disconnect one of them. Thanks.