I called the rep and he said it would be okay. I told him that I fish all winter and have launched with the temps in the teens and he said, as Tony said earlier, that if they were drawing power, they were fine. It took a long time to get the battery in and al the wires installed. This battery uses bolts for posts, not studs. I thought I'd like that, but don't. I had to get longer bolts to have room for all the ring terminals, and had to take them out multiple times to add washers, etc..