The Museum of HP Calculators
HP Forum Archive 08
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Message #1 Posted by Faradji on 19 May 2002, 2:32 p.m.
Could you please provide me the part number and charateristics of the HP-31E calculator battery
Message #2 Posted by David Smith on 19 May 2002, 4:22 p.m.,
in response to message #1 by Faradji
The battery is basically just two AA NiCad cells connected together at one end. Part of the gap between the cells is filled in on one side and completely on the other to make it hard to install backwards.
Message #3 Posted by Vieira, Luiz C. (Brazil) on 20 May 2002, 11:42 a.m.,
in response to message #2 by David Smith
just to add some info: all spices (30-series: 31, 32, 33, 34, 38) share the same battery pack, so, interchanging is always possible. The plastic + metal holder used in the original pack can (and should) be used to compose the new, rebuilt pack.
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