HP Forums

Hi everyone

Any tips for the replacement of a broken battery contact in an HP 45?

As acquired the battery was very corroded (to the extent that it was quite a difficult job to even get the battery compartment cover off) and the +ve contact was corroded through at the point where it passes through into the body of the calculator. The -ve contact is much better but is still perforated in quite a few places.

Would a thinner sheet of half hard copper as suggested by Randy for replacing Spice contacts have the necessary springiness for the job?

Cheers

James

You'll find the classic contacts to be ~0.006-0.007 inches, same material as the spices. Only difference is the gold plate on the classics, went to bright tin for the spices. Price pressure, no doubt.

Thanks Randy.

I'll track some down and get metal bashing!

Cheers

James