Anyone have issues with these being hard to loosen? Worse than that my terminals wiggled off, so its difficult to get leverage on them in mid air or spinning on the terminals. I sprayed them (terminal cleaner, not liquid wrench etc), but the leverage thing seems to be the bugger here.

Any ideas? They look to be clean and in good order, and I bought shims in case they wont tighten down on the new battery. I would hate to have to chop them off at this point.

 

Put a wrench, rod or something up through the hole to hold them while you loosen the bolt.

 

Got it, some channel locks and a some sliced knuckles, at last!

 

Had the exact same issue - yours sounds like it went better than mine haha.

My negative terminal was a little loose and would make a bad connection on some mornings. Went to tight and the whole terminal spun. Ugh. Then I tried putting a 1x1x3" square tube between the terminal and the fender to keep it from rotating as I loosen - no go. Finally I used PB Blaster. No go since the corrosion isn't rust so much as battery acid. Nice! In the end I just said a quick prayer and zapped it with my impact gun lol. Came off just fine. It wouldn't tighten up though because the corrosion was in the "split" of the battery terminal and it wouldn't compress. So with the nut off I tapped it with a wrench until it cleared out... but subsequently the stud thing that comes up through the terminal fell out and went UNDER the battery tray. Hahaha. Turned into an hour fix