I too have never seen a battery burst from freezing. I was speaking in theory as to the possibility. I would venture to say that if you were to place a completely dead battery outside in the coldest SC weather and checked the water in the battery it probably would be at least partially frozen.
Would it freeze solid enough to burst the battery. Probably
not.
Slab you've managed to pick the nastiest weather we've had in months to come visit our great state! Hope your visit is a good one.
Mark 1:17 ...I will make you fishers of men