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HP Forums / HP Calculators (and very old HP Computers) / General Forum v / Lithium (coin cell) backup battery

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Lithium (coin cell) backup battery
11-20-2021, 02:53 AM (This post was last modified: 11-20-2021 06:13 PM by SEasterling.)
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SEasterling Offline
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Lithium (coin cell) backup battery
Does anyone know the first graphing calculator model in which a lithium (coin cell) backup battery was used? I thought I saw it in a 48G+, but maybe I was seeing things through keto brain fog. Thanks!

Edited to specify lithium coin cell battery.
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Messages In This Thread
Lithium (coin cell) backup battery - SEasterling - 11-20-2021 02:53 AM
RE: Lithium ion backup battery - ijabbott - 11-20-2021, 08:35 AM
RE: Lithium ion backup battery - Liam Hays - 11-20-2021, 03:29 PM



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