When I bought my battery in 08, my local Interstate dealer had one on hand! I thought for sure, they would have to special order one. Always call ahead just in case they have to order one in but get the price first! It is a rare size of a battery and a monster at that.Anyone have trouble buying the Interstate one? I went to an Interstate dealer and they couldn't get their hands on the MTP-H9. It doesn't show on the Interstate site either.