Are old BA II plus calculators OK to use?

I have a BA II Pro, can confirm that the battery is impossible to replace.

If you are happy to pay the higher price, might as well get it.

The BA II Plus Pro, er, Pros:

Sturdier build and looks better (subjective of course)Designed for battery to be changed without having to need a screwdriver (but this is notoriously tricky)Discounted Payback Period feature (nice to have, not required for CFA)NFV feature (nice to have, not required for CFA)

Cons:

Some people complain that it’s not as responsive, and that’s important because you want to make sure your input is correct!Usually more expensive

On a related note, does anyone see an advantage of the Professional version?

You’re good on both of those.

I used one waaaaay older than yours for my last exam and it was totally fine.