I know this is Polaris section but I just got done fixing my buddies can am renegade 800x and I took it riding today to test it out. Long story short it keeps vibrating the battery cables loose. I got them as tight as they would go and they were loose after 5 miles, negative even lost the bolt and nut and I died on trail. Fixed it and checked couple miles later at next stop and loose again. Then again when I got home. I even used new bolts and nuts but still did it. I just put some medium strength loctite in the nuts when I got home but not sure if that will do it

 

As I was reading this I was thinking you should put some blue Loctite on them. They say great minds think alike.

 

I've used that blue Loctite before and it definitely works. Make sure you give it time to set up, overnight at least is best. I've never heard of battery cables working loose but it should fix the problem.

 

I grinded down to sides of a lock nut and used loctite, I think that should do it. Only time will tell