Four things:
One:
The factory terminals are stamped from thin steel, add some vibration and/or corrosion and it's asking to fail.
Two:
The negative side right near the post, is a very small connection, all the power the Jeep consumes has to pass through this very small amount of metal. See pic.
Three:
The positive terminal has a weird wedge mechanism for tightening around the post. After a few install and remove cycles, it will stop getting tight, and no amount of fighting with it will make it tight. As sensitive as our vehicles are to voltage, this can make all kinds of weird things happen.
Four:
For a lot of people there is just not enough places to attach accessories. winch, switch controllers, air compressors, hard mounted jumper cables.... all require robust power connections, and once you get beyond one or two, the factory terminals just won't do.
When I get a chance, I think I'll be swapping in some military terminals from NAPA, and making some custom positive and negative connector blocks with 100-200 amp breakers.
View attachment 39848
View attachment 39849