You mean to say 2 connectors wired in parallel to maintain voltage...
That's a great idea.
I had bought a kit from Ebay a while back that includes balance LEDs for Maxwell 350F caps. The caps are rated at 2.7v, which in series (6s), and assuming good balance, means I'm safe up to about 16v.
Maybe the supercap is unnecessary. My Lipo pack is 5Ah, and rated at 60C discharge, so I should be good to briefly crank on it. I think I measured my car at 200A to crank it.
Here's an old video I made showing proof of concept of something similar using LiFePO4 and the same supercaps. It's not meant as a virtual alternator delete though, and just runs at standard voltage.