HP-67 battery



#5

I may be getting an HP-67 which is missing the batteries. Are these available anywhere? If so where do I get them. Can I use non-original Nicad batteries as replacements?


#6

Hi Glenn,

Take a look here:

http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1321217825

They work great.

Arnold

#7

Firstly, don't be tempted to try to run an HP67 (or HP65) from the AC adapter without a battery pack in place. You can damage the (custom) card reader sense amplifier chip. Which is only obtainable from another old machine.
The battery pack is just 3 AA NiCd cells in series. You could just wire up 3 cells and wire them to the contacts in the machine (the contact towards the display end of the machine is -ve). But if you don't want to modify your machine and want a drop-in battery pack, then it's a little harder to make one.
The battery packe are not available new any more, but it's possible to cut open old ones and fit new cells. I believe there are a couple of people who sell rebuilt batteries.

#8

See the thread which begins at:

http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv002.cgi?read=3885


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP 67 Calculator Battery Terminal plus/minus Steve E. 6 275 04-30-2012, 03:29 PM
Last Post: Nick R
  aOT--Battery/battery contact care advice needed Matt Agajanian 0 147 04-24-2012, 07:35 PM
Last Post: Matt Agajanian
  HP-67 Battery door latch Matt Agajanian 23 810 04-13-2012, 01:57 PM
Last Post: Matt Agajanian
  hp 67, battery Sok-khieng Chum Hun 11 421 09-13-2011, 04:00 AM
Last Post: Tony Duell
  HP-67 battery question Csaba Tizedes (Hungary) 3 183 05-05-2011, 06:33 PM
Last Post: sylvandb
  HP-67 battery questions Thomas Okken 2 182 01-08-2011, 02:44 PM
Last Post: Thomas Okken
  HP-67 Battery Pack Robert Hollyer 1 144 04-09-2010, 10:41 PM
Last Post: John Robinson
  HP-67 Battery Pack AlbertTocarLoseggs 5 254 10-15-2009, 01:26 AM
Last Post: sylvandb
  TDS 500K dead battery, pictures of the inside of the card and the battery. Geoff Quickfall 4 320 04-02-2009, 11:23 PM
Last Post: Geoff Quickfall
  HP-67: The Red Dot Low Battery LED almost always lighting AlbertTocarLoseggs 2 153 03-15-2009, 02:41 PM
Last Post: Charles

Forum Jump: