[Tainan]

The tracking device itself is about the size of 2 pks of cigarettes. The long thing is a battery pack. Looks like an extra-big battery pack. These things can be wired into a line using the vehicles electrical power which negates the need for the external battery unit.
(thats how most professionals do it...or so I'm told)

[brushcop]

Thanks for that. The battery pack size is surprising given today’s technology on all things electronic.