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Wireless charging for a HP-25 calculator
05-12-2021, 08:04 PM (This post was last modified: 05-12-2021 08:12 PM by PANAMATIK.)
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PANAMATIK Offline
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RE: Wireless charging for a HP-25 calculator
You found also a very clever solution, and the only true one, for indicating "low battery". The original HP-25 manual states that there is only one minute left after the decimal dots appear. Compared to that. your "10-20 minutes afterwards" are very comfortable.

Bernhard
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RE: Wireless charging for a HP-25 calculator - PANAMATIK - 05-12-2021 08:04 PM



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