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Converting HP-25 to NiMH batteries, possible?
07-21-2022, 01:40 AM (This post was last modified: 07-21-2022 04:27 AM by cubytus.)
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cubytus Offline
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RE: Converting HP-25 to NiMH batteries, possible?
(07-21-2022 12:59 AM)BobVA Wrote:  2. Was there a battery pack in the calculator when you got it?
Yes, but it has been altered to take regular, standalone AA batteries. So I got this spring from another device.

About using Ni-MH batteries: even if it's not ideal, if I let them charge using the original charger, at some point display segments flash randomly. Question: as I don't have a scope on hand, would it be reasonable to assume the Ni-MH chemistry doesn't provide the regulation function like the Ni-Cd did?
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RE: Converting HP-25 to NiMH batteries, possible? - cubytus - 07-21-2022 01:40 AM



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