I had a Garmin zumo 390 wired into a tiger 800 . I no longer have the bike but I held on to the Garmin. Anyone idea how long the built in battery will last, as I don’t want to wire it into the Speed Twins loom.
I have no idea but a guess would be at least a few hours. To be sure I would fully charge it and then leave it on and see what result you get
If you are not going to wire it to the electrics (i.e. run on zumo battery) then the mount is easily removed when you don't require it.