Hey guys I'm new here and I have a 2004 rubicon 500. This bike was running perfect last year for hunting season and riding but this year after hunting season the battery died so I went and bought a new one( I had the old one for a while so I thought it was normal) but after I bought it I went riding durning the winter and about a month later the battery died again. And before I put the new one on I charged it up. So I went and returned it for a new one then about one or two months later the same thing happened. What is wrong with it and how much will it be to fix it? Thanks!