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HP 12C how to replace the 3 LR44 batteries?
01-04-2022, 06:19 PM
Post: #1
HP 12C how to replace the 3 LR44 batteries?
Hi guys, I have lost the manual of my very old HP 12C and I don't remember the sequence to replace the 3 LR44 batteries without losing the programming.
Can anyone help me ?
Thank you !!
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01-04-2022, 11:18 PM
Post: #2
RE: HP 12C how to replace the 3 LR44 batteries?
(01-04-2022 06:19 PM)albertop Wrote:  Hi guys, I have lost the manual of my very old HP 12C and I don't remember the sequence to replace the 3 LR44 batteries without losing the programming.
Can anyone help me ?
Thank you !!

Page 261 of the original hp15c usersguide shows the procedure,
https://literature.%%calc.org/items/582

Please insert hp for %% in the link above. For some reason shrouded in the mists of time, direct references to that site are taboo here.
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01-04-2022, 11:22 PM (This post was last modified: 01-04-2022 11:28 PM by Massimo Gnerucci.)
Post: #3
RE: HP 12C how to replace the 3 LR44 batteries?
(01-04-2022 11:18 PM)Stevetuc Wrote:  
(01-04-2022 06:19 PM)albertop Wrote:  Hi guys, I have lost the manual of my very old HP 12C and I don't remember the sequence to replace the 3 LR44 batteries without losing the programming.
Can anyone help me ?
Thank you !!

Page 261 of the original hp15c usersguide shows the procedure,
https://literature.%%calc.org/items/582

Please insert hp for %% in the link above. For some reason shrouded in the mists of time, direct references to that site are taboo here.

Not at all. It's another the forbidden one! ;)
https://literature.hpcalc.org/items/582

But why not point directly to the 12C manual? And, since Alberto is a fellow italian member here's the link (pp. 219 ff.)
https://literature.hpcalc.org/community/hp12c-oh-it.pdf

Greetings,
    Massimo

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01-05-2022, 08:15 AM
Post: #4
RE: HP 12C how to replace the 3 LR44 batteries?
Outcome - is a direct link to the Batterie page Smile
https://literature.hpcalc.org/community/...f#page=225

(from https://helpx.adobe.com/acrobat/kb/link-...robat.html)
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01-05-2022, 08:27 AM
Post: #5
RE: HP 12C how to replace the 3 LR44 batteries?
(01-05-2022 08:15 AM)Leonid Wrote:  Outcome - is a direct link to the Batterie page :)
https://literature.hpcalc.org/community/...f#page=225

(from https://helpx.adobe.com/acrobat/kb/link-...robat.html)

An elegy to laziness! :)

Thanks.

Greetings,
    Massimo

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01-05-2022, 09:48 AM
Post: #6
RE: HP 12C how to replace the 3 LR44 batteries?
Thanks Guys, you were very kind !!
Have a nice day and a happy new year
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