Hi Johnny, I don't know how my battery issue transformed into whether to disconnect the battery or keep the battery connected. Since the Crossfire seems to be very voltage sensitive, I agree with you and onehundred80 and would keep the battery connected and charged. That is what I have been doing for the past 1 1/2 years with no negative results. It just so happens that my battery finally failed, I replaced it, and my Crossfire seems very happy with the new battery. Since I only drive the Crossfire on very nice days in the winter months I will start the car every couple of weeks in the winter and let the engine warm to operating temperature.