I have an 06 Attak never had any starting issues. Went to Quebec 2 weeks ago rode sled first day put on 200 miles. Sled sat overnight maybe at 0 degrees F battery was completely dead in morning tryed starting off a jump box wouldn't start not enough juice. Started it jumping off car, started right up. Ran the sled for about a half hour battery seemed to charge ok no more starting issues even at -10 degrees F another night. Came back home no snow sled sat about 9 days tried starting battery dead again. Has anyone else had this problem I was thinking maybe battery has a bad cell, I think the charging system should be ok cuz once it is started it is fine if it was the charging system I would think it would quit once the battery was run down. Any suggestions appreciated.