Blaster battery terminal broke

Location
Orlando
I went out riding in the surf for a few hours today and when I put my blaster back on the trailer, she wouldn't start. She made some weird sounds, like rapid clicking. All came from the electronics box.

When I got home I checked everything and discovered the positive battery cable end was hanging on by a thread. My question is where can I find a terminal end the same size. My two local auto parts stores had terminal ends, but the bolt hole was huge compared to the stocker.

Suggestions?
 
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