Where did you get this battery from? Do you put on a battery maintainer on it during storage? I wonder if you got the one where they put a smaller battery inside the case? My repro batt was made by Turbostart that I purchased in 2010. Still works great and I leave the Battery tender on it 24/7 when Im not driving it.. I don't believe you have Turbostart since they stopped making them over 5 yrs ago, but supposed to start up again.