Wow! Has this thing ever taken off! First of all, the Optimate comes with 2 sets of leads, one with clips, and the other with ring terminals. Both of them plug into the charger unit. The set with the clips doesn't connect to the one with the rings! It's a male/female connector thing, I don't wanna have to explain that!! Besides, the Optimate cable isn't heavy enough for the current draw required to start a vehicle.
Secondly, there are times when I have done backpack or saddlebag trips, and sometimes we stay over at cabins, etc, that don't have electricity. I just like the peace of mind of having something for "just in case". I keep a set of jumper cables in my truck, but have yet to use them to jump my vehicle. Someday, my OEM battery will not start the truck, and if I'm in a remote location, or away from home when it happens, I like having the option of getting it started and getting to my destination.
I truly appreciate all the input, and don't want to come off as biting the hands that feeds, so to speak. I was just looking for options.