My car sits for weeks at a time and usually the battery is dead by the time I can enjoy it. That meant carrying a heavy jump box in the trunk (FYI the Jump-N-Carry JNC660 is the best I've used).
Then I read about the CTEK trickle charger and decided to try it out. Wow, it even reconditioned a 6-year old and presumed dead battery back to life (it couldn't save my MagnaPower ETX18L lightweight battery though, lasted only 2 years). The only downside was I had to keep my hood open all the time to connect the trickle charger using the clamp connections, allowing dust all over the car and frunk. So I happened upon a magnetic connector made by nakidparts.com for Corvettes and decided to give it a shot. They offer Battery Tender and CTEK versions and are made in the USA.
http://www.nakidparts.com/id127.html
A pic of the setup on a C6.
It allows you to just drive away without worrying about whether the charger is connected. The wires are the specific length for Corvettes so I had to lengthen mine 38" for the ground and 34" for the positive to locate the connector on the driver's side which is closer to my electrical outlet.
Here's some pics of the wiring and setup.
Stock magnetic charger receptacle
Extending wires using sealed bullet connectors. I've never used these before but they work fine. Just a little finicky to connect using a standard wire stripper. Apparently there are special tools for crimping bullet connectors.
I only had the same color connectors so I did 1 side male the other female to prevent any mixups in polarity.
Sealed and weatherproof
I used a lot of black heatshrink tubing to make it look OEM. Thanks Harbor Freight! Then route the wiring.
Location of the receptacle and wiring through the mesh. Prep surfaces with an alcohol pad and stick on using 3M extreme outdoor mounting tape.
Yay! Now I just need to get a car cover and cut a hole to fit my antenna and this baby will be able to be stored, dust-free and charged!
Pretty discreet when disconnected. I guess the front plate distracts your attention... grrr NJ! Get with it!