HP Forum Archive 07

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HP-67 battery Message #1 Posted by Glenn McEnroe on 12 Jan 2002, 1:10 a.m. 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 Message #2 Posted by Arnold Steekelenburg on 12 Jan 2002, 8:04 a.m., in response to message #1 by Glenn McEnroe Hi Glenn, Take a look here: http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1321217825 They work great. Arnold

Re: HP-67 battery Message #3 Posted by Tony Duell (UK) on 12 Jan 2002, 3:05 p.m., in response to message #1 by Glenn McEnroe 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 Message #4 Posted by Larry on 12 Jan 2002, 7:48 p.m., in response to message #1 by Glenn McEnroe See the thread which begins at: http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv002.cgi?read=3885

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