I'm not a battery designer, or engineer, or connected with any battery company. That said, I have talked with many people in the auto trades industry that swear by Interstate batteries where cold weather is a factor. Seems they are built for the lower edge in temperatures. I have used them in my Cube and gotten 8-10 years service. My coach batteries are now AGM's and have no track record. The chassis battery is a four year old Interstate, but gets regular charging, so can't speak to the holding charge time.