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Converting HP-25 to NiMH batteries, possible?
07-20-2022, 06:06 PM
Post: #5
Wes Loewer Offline
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RE: Converting HP-25 to NiMH batteries, possible?
(07-20-2022 04:26 PM)Maximilian Hohmann Wrote:  And always charge them externally, never ever connect the original charger to the calculator. Never.

I believe you, but I am curious as to the reason behind this advice. NiMH batteries have similar voltage as NiCd batteries, so I would assume it is related to the internal resistance. If so, I'm surprised that at relatively low current that this would make an appreciable difference.

Or perhaps it's something else I haven't thought of.
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RE: Converting HP-25 to NiMH batteries, possible? - Wes Loewer - 07-20-2022 06:06 PM



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