Repair battery terminal

Can you drill a hole in the brass and tap a thread into it? Then just screw a terminal onto it.

Ian

tdv,

depends how thick the remainder of the terminal is.
If >6mm, you could tap it with M4.
But this is only for low currents <20A.

If not, you could try this:

the terminals usually are elbow shaped, one leg exposed, and the other runs parallel to the surface, a few mm under the black/red sealing compound.
So you could try to carefully scrape/chisel a 5 mm wide groove along the center line of this sealing compound.
If you accidentally damage the battery lid, seal it immediately with a piece of plastic sheeting and Araldite (there's a gas pressure differential of about 4~6 psi between inside and outside of the AGM battery during normal operation)
Once enough metal is exposed, drill and tap.
Make a stud by cutting off the head of a suitable bolt followed by starwasher and locknut.
Then a normal nut followed by another starwasher.
Now you can use a suitable wing nut to secure your wire lugs to the stud.

And don't smoke while doing this.
And please wear safety glasses just in case something goes pop.

cheers, Peter