Good morning. Owner of a 1974 PA 28 235 Pathfinder. Wonderful airplane. Gradually transitioning from all the support services I enjoy at KCRP to KACT and life in a T-Hangar. I want to add an external battery charger interface on the frame for trickle/battery minder charging. It gets cold there and the 540 needs a topped-off battery to avoid a long start song-and-dance. My mechanic and I keep looking for a place to externalize but no success. I don't really want to leave the baggage door ajar for an inside connection. Lots of critters call the hangars home - including an abundance of scorpions. Thanks.