Another (and probably final) attempt at soldering. Here it is with another positive wire and banana plug setup. Is it any better?

I am not worried about the solder on the threads as this time (if it is acceptable) I will be using a heat-shrink tube.

Let me know.

Could someone please let me know where (online) I can order solderless banana plugs and banana jacks, and possibly a solderless 12V battery attachment to turn the one clip into two so I can have two separate items (charger and starter) attached to the battery at once? Must take American Express.