Have any of you mechanic types fabricated/installed a ring terminal battery charger connection on your certified aircraft? AudioAuthority has an approved kit (BM-AIK2A) but quality is questionable according to feedback. Especially with the glass fuse situation- those things can get hot, and are problematic anyway. I prefer the BatteryMinder version. They offer two basic ring terminal kits (RTA-2415 and RTA-2415EXP) but they are not listed as approved for certified aircraft. I know of certified aircraft flying around with these installed however, and they are actually signed off by a licensed mechanic. Confusing! How is everyone working around this? Appreciate it.