HP Forums
HP-67 battery - Printable Version

+- HP Forums (https://archived.hpcalc.org/museumforum)
+-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html)
+--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html)
+--- Thread: HP-67 battery (/thread-14114.html)

HP-67 battery - Glenn McEnroe - 01-12-2002

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?

Re: HP-67 battery - Arnold Steekelenburg - 01-12-2002

Hi Glenn,

Take a look here:


They work great.


Re: HP-67 battery - Tony Duell - 01-12-2002

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.

Re: HP-67 battery - Larry - 01-12-2002

See the thread which begins at: