Classic battery contacts


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?




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!



Possibly Related Threads…
Thread Author Replies Views Last Post
  A Wonderful Classic HP Calculator BShoring 2 1,375 11-22-2013, 05:25 PM
Last Post: BShoring
  Classic battery polarity Kiyoshi Akima 2 1,564 11-08-2013, 01:31 AM
Last Post: Kiyoshi Akima
  CLASSIC/SPICE KEY LEGENDS Mike T. 2 1,378 08-21-2013, 04:53 PM
Last Post: Mike T.
  Woodstock, Classic & Spices for iPhone Matt Agajanian 8 2,814 07-10-2013, 06:10 PM
Last Post: BShoring
  Classic calculator display chip type number? Juergen Hofstaedter 3 1,563 01-22-2013, 12:47 PM
Last Post: Eric Smith
  Classic Series Enter Key Dan Lewis 15 4,268 12-19-2012, 09:10 AM
Last Post: Thomas Radtke
  Classic (HP-67) charger issues revisited Matt Agajanian 6 2,315 05-20-2012, 10:50 PM
Last Post: Matt Agajanian
  aOT--Battery/battery contact care advice needed Matt Agajanian 0 1,130 04-24-2012, 07:35 PM
Last Post: Matt Agajanian
  That's definitely a Classic! Matt Agajanian 3 1,405 04-02-2012, 02:13 PM
Last Post: Luiz C. Vieira (Brazil)
  Yes, it's here!! and it is not a 35 classic!! aurelio 14 3,713 03-17-2012, 03:10 AM
Last Post: aurelio

Forum Jump: