I came up with something that has probably already done before, but thought I would share just in case anyone found this useful.
Since I own a decent amount of cars and sometimes they sit for a month or so...I wanted to find a battery kill switch that was remote controlled.
And I found one that works great that was originally designed for RV owners by WithCo "Battery Doctor Battery Life Preserver Automatic Battery Disconnect Switch"
Then I started thinking how this would make a pretty good security system. Every time I park, I just click the remote and it remotely disconnects the battery...hard to steal a car without power.
Which led me to the next thought...which is what about my infotainment deck's memory...that would be a pain in the @ss to deal with it loosing all its memory every time.
So the next step was how do I keep power hot to the the deck's memory.
I attacked this issue by utilizing the following hardware: Wagan self re-charging Auto Jumper
I am going to hard wire the unit's power input to my battery and it's output into my radio memory wire and ground...housing the unit in my G1 glove box.
So now I am protected in two ways for only $150 and pretty easy to install everything:
2. Having a dead battery