I want to put a 150Ah 12V battery, a low power 3G router along with a 0.25W computer into my car. This computer has apache (http server software) installed. I want to be able to park the car in a dark garage for a long period of time, which means not charging the batteries.
Then if I want to turn on the heating in the car, I can log into an app on the server, and do so for a remote location. But that can only happen though a mobile connection onboard the vehicle, such as 3G, as I may park in different garages each time.
In the summer, I will drive this car frequently, but in the winter, the temperature drops and the icy roads makes it less tempting to drive, so the car may be stationary for long periods of time.
Kind regards,
Marius