Lithium (coin cell) backup battery

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Lithium (coin cell) backup battery

11-20-2021, 08:35 AM

Post: #2

ijabbott Offline

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RE: Lithium ion backup battery

(11-20-2021 02:53 AM)SEasterling Wrote: Does anyone know the first graphing calculator model in which a lithium ion backup battery was used? I thought I saw it in a 48G+, but maybe I was seeing things through keto brain fog. Thanks!

Perhaps the TI-81, but some early TI-81 units omitted the backup battery, according to Wikipedia.

— Ian Abbott

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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 - Maximilian Hohmann - 11-20-2021, 02:03 PM

RE: Lithium ion backup battery - Liam Hays - 11-20-2021, 03:29 PM

RE: Lithium ion backup battery - Jonathan Busby - 11-20-2021, 05:46 PM

RE: Lithium (coin cell) backup battery - toml_12953 - 11-21-2021, 04:10 AM

RE: Lithium (coin cell) backup battery - Jonathan Busby - 11-21-2021, 06:06 PM

RE: Lithium (coin cell) backup battery - SEasterling - 11-20-2021, 06:26 PM

RE: Lithium (coin cell) backup battery - Jonathan Busby - 11-20-2021, 06:39 PM

RE: Lithium (coin cell) backup battery - Jonathan Busby - 11-21-2021, 06:01 PM

RE: Lithium (coin cell) backup battery - rprosperi - 11-20-2021, 08:47 PM

RE: Lithium (coin cell) backup battery - SEasterling - 11-20-2021, 08:51 PM

RE: Lithium (coin cell) backup battery - ijabbott - 11-20-2021, 09:54 PM

RE: Lithium (coin cell) backup battery - rprosperi - 11-20-2021, 11:19 PM

RE: Lithium (coin cell) backup battery - ijabbott - 11-21-2021, 11:36 AM

RE: Lithium (coin cell) backup battery - SEasterling - 11-21-2021, 05:09 AM

RE: Lithium (coin cell) backup battery - EugeneNine - 11-21-2021, 05:23 PM

RE: Lithium (coin cell) backup battery - Jonathan Busby - 11-21-2021, 07:00 PM

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