I have about 3,500 Km on my 2018 Ultra FS, with most all of it on rough Jeep roads. Along the way the battery male prongs, wouldn’t fit the female frame side receptive language, or only did so intermittently. Biktrix fixed me up in a flash with a new battery top and a new, frame side lock and key.
It fits as new and this fellow will keep an eye on the silver retaining nuts next time. Thanks Biktrix.
Needed a battery lock for a different brand bike and they were a great help.
Dorado Battery Lock and Key