Unfortunately- horribly disappointed. I have purchased a number of auto batteries and battery tenders from Interstate. Including a battery for my 1991 jaguar XJS. I had purchased a battery in 2018 which failed in 2021. I took it in and I received a discount towards a new battery last summer. I had difficulties with this new battery maintaining a charge, to the point that I always had a battery tender on it.This vehicle is stored through the winter, I check on it monthly if not more. When I checked on it this morning I noticed that the battery had exploded. I took the battery to the 72nd St. location to make a warranty claim. They first implied that I dropped the battery, then stated it was something wrong with the vehicle, then stated there was something wrong with the battery tender of which I purchased from them. In the end they refused to honor their warranty and told me they would sell me a new battery at cost. They tried to tell me the only way a battery would explode is if it were being overcharged. It took me all of 10 seconds to search the Internet to see multiple reasons why an automobile battery would explode like it did. Primarily it's seems when hydrogen and oxygen gases build up because of improper ventilation with in the battery and any ignition occurs - an explosion may result - including if ignition from within the battery. I am oversimplifying but the end result is I purchased a battery last summer worked poorly last summer when I put the vehicle away in the winter and checked on it monthly it was fine until this morning when it had already exploded. Something was wrong with that battery and the company should honor its warranty. I am someone that owns 10 cars and almost all of them have interstate batteries. Now I am removing all of them in part because there must be something wrong with the design of their batteries and the company refuses to honor their warranty. read more