Thanks for asking! The EarthX ETZ5G (plus brass extenders) didn't fit (i.e. couldn't get the seat back on) and didn't close the gap between the positive post and starter relay. All the other batteries suggested or in use by KTM have been too large or posts are wrong. The local battery shop could find nothing in the US. One parts distributor says that KTM/Gas Gas stopped supporting the bike altogether so no battery available. Power Thunder still seems to be the only one available that fits but it's impossible to import. I'm trying a customs clearance agent next before I try whatever comes next??? Still, quite a fun ride
