For example...
These little rings are more for aesthetics than insulators. Most don't cover any of the top of the batteries negative pole...
Rewrapping batteries
If you really want, I'll rewrap 5 different model batteries and show you in pics.
Tapatyped
If you know how to wrap a battery then you can get away without it but for general people that ask and don't know what that part is, you have to admit it is better to say what he said at the first, due to they need to just get a new battery and not even rewrap as they aren't ready yet.