Starting Battery Booster

I have a pigtail cable that connects to my battery terminals, comes up through the baggage floor and is mounted horizontally on the baggage wall behind the passenger seat. It is easily connected to a Battery Minder/charger/starter.

You want to externally plug to your car or any outside booster, right? Both Piper and Cessna have plug to do so. Go to Aircraft Spruce they have them!

I would so love to do that, rather than pulling everything out of the baggage compartment, then the cover off the battery case.

I have thought about pulling all the fuses, turning on the master, and connecting at the starter motor.

I am looking to install an engine starting battery charging hook up. Do you know of such a thing? I would like to be able to clip a starter booster to the master relay without having to remove the floor panel to access the battery. Any suggestions?