If you’re using the hard wire kit then you won’t need the Cellink battery I think you use one or the other.
Doesn't connecting the dashcam straight to the car via hardwire kit cause car battery issues in the long term? Was thinking connecting to the battery would help prolong the car battery's life.
I flick my cars every 3 years have never had to replace a battery but what makes you think a hardwired cam will decrease battery life.
The parking mode feature is there to ensure you dont get a flat battery so if the battery never goes flat its lifespan should not deteriorate..... happy to learn otherwise though.
FWIW ive had dual channel cams in all my cars ever since dash cams became a thing, they are not hard to install at all, read the instructions twice and proceed carefully, if something in the instructions does not make sense ask someone.