I bought new RV battery about 6 months ago. Since it was new i had trouble compared to Walmart Maxx mounted next to it. I hesitated to buy because of high price. Now I finally pulled it to test. It was bad. Dealer had to call IB to check warrantee. Not sure why since i had my receipt. Anyway, I was told they had yo order new. So I came home no battery. I will never buy another IB again. I never heard of dealer having to call manufacturer to see if warrantee good. I had reeipt! I should have known that something not right when no warrantee info was offered or posted when battery was purchased. Beware of this Interstate scam! Walmart will test battery look at date and replace it or pro rate it on the spot. And about 50.00 less! Also no Contact info on their website that i seen!