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HP Forums › HP Museum Forums › Old HP Forum Archives v
Classic battery polarity

Linear Mode
Classic battery polarity


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Kiyoshi Akima Offline
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Posts: 325
Threads: 18
Joined: Jul 2006
#4
11-08-2013, 12:45 AM

What's the polarity on the two connectors inside the battery compartment of a Classic-series HP? I've got two Classics I'd like to at least test to see whether they still work but I have no battery packs for them. I figure I can wire three AA batteries in series, but which way do I connect them to the calculator? I don't really feel like taking a 50-50 chance. With my luck, I'll hook it up the right way on a dead machine, figure it's the wrong way, reverse it for the other one, and fry a good machine.

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Thomas Radtke Offline
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Posts: 1,089
Threads: 32
Joined: Dec 2005
#5
11-08-2013, 01:21 AM

http://www.hpmuseum.org/batts/bccls.jpg

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Kiyoshi Akima Offline
Unregistered
Posts: 325
Threads: 18
Joined: Jul 2006
#6
11-08-2013, 01:31 AM

Thanks. Somehow I missed that when I was searching the museum.

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