Pic stolen from web but it's the same terminal end; I haven't studied how that top mounted bolt makes the clamp work, but these don't inspire confidence.
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Truck had just a barely perceptible slow crank. The real glaring symptoms (to me, anyway, but not the previous 6 shifts that used the truck because nobody said anything) was right after you started it, the radio switched from 12hr clock back to 24hr (default) and the dash light dimming display would come up as if you'd hit the button for it, but hadn't.
I jump out of the truck dozens of times a night and shut it off so nobody jumps in for the free ride. Almost always in hostile territory, so if it doesn't want to start when I jump back in.. that's
not good.
Richard