Darn TL,
I was hoping somebody out there had fabricated some sort of miniature titanium canister complete with a rubber gasket screw on lid and magnet to affix to the frame. In lieu of that I guess a rubber band &/or zip tie will work just fine

. How do you like the Trophy you have listed?
Yes Benny this model has ~6" battery leads, connected to a little charge unit (1/2 pack cigarette size), with a power cord permanently attached. Double sided tape holds it in place.
JH