More power (literally) for the HP-41, follow-up.
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08-14-2023, 06:31 PM
Post: #41
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RE: More power (literally) for the HP-41, follow-up.
Pictures of my beta unit ...
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08-15-2023, 07:24 PM
Post: #42
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RE: More power (literally) for the HP-41, follow-up.
:O
Compliments Diego for your creation and thank-you Sylvain for the report and tests |
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08-16-2023, 07:37 PM
Post: #43
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RE: More power (literally) for the HP-41, follow-up.
Hi all,
Thanks. Sylvain for these clear pictures. ;-) and Aurelio for your kind words. Best. Diego. "Do not suppose, check it twice." |
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08-19-2023, 06:12 PM
Post: #44
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RE: More power (literally) for the HP-41, follow-up.
The battery indicator is finally visible!
It took ...
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08-19-2023, 06:22 PM
Post: #45
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RE: More power (literally) for the HP-41, follow-up.
Hi Sylvain,
And thanks for confirming it works! I was starting to think that the low battery detection circuit was not properly designed. :-) Note however that the "BAT" annunciator is activated when the battery capacity is about 22-25%, so there's still some "life" in it, though it is highly advisable to recharge it before it runs under 20% to extend functional life span. Best wishes. Diego. "Do not suppose, check it twice." |
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08-21-2023, 06:50 PM
(This post was last modified: 08-25-2023 02:50 PM by Sylvain Cote.)
Post: #46
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RE: More power (literally) for the HP-41, follow-up.
Test round #2 → 41CL Flash update
Flash upgrade setup
Flash upgrade to 2023-07-25 Code: CL Board :: FDBVER? :: CDBEXP All my units has been updated and the battery is not depleted. So I will simulate a lot of update by doing a downgrade/upgrade loop until the BAT light-up between 2023-07-25 and 2018-12-28 Flash downgrade setup
Testing on my 41CL v5 #2 ... Code: FDBVER? :: CDBVER? :: CDBEXP Switching to my 41CL v4 Code: FDBVER? :: CDBVER? :: CDBEXP Switching to my 41CL v3 Code: FDBVER? :: CDBVER? :: CDBEXP Switching to my 41CL v5 #1 Code: FDBVER? :: CDBVER? :: CDBEXP Final results on a single charge are ... Code: FLCHK? edit: last update 2023-08-25 10h50 UTC-4h |
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08-22-2023, 06:28 AM
Post: #47
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RE: More power (literally) for the HP-41, follow-up.
Thanks Sylvain for a thorough report. I just picked up my PowerPack from the post office and it is now powering my CL, purring like a wild cat - kudos to Diego, as always!
I was thinking of doing some tests but but you've beat me to it ;-) it's a great thing not needing to worry about alkaline batteries anymore! "To live or die by your own sword one must first learn to wield it aptly." |
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08-25-2023, 02:53 PM
Post: #48
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RE: More power (literally) for the HP-41, follow-up.
Test round #2 → 41CL Flash update
Final results on a single charge are ... Code: FLCHK? |
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09-13-2023, 01:11 PM
(This post was last modified: 09-13-2023 01:16 PM by KimH.)
Post: #49
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RE: More power (literally) for the HP-41, follow-up.
Hi Diego,
Just got my 82120D - works great, I am one happy camper Thank you for making this - much needed option - available!! /KimH PS: Ready for one more if/when you make a second batch |
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09-13-2023, 02:33 PM
Post: #50
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RE: More power (literally) for the HP-41, follow-up.
(09-13-2023 01:11 PM)KimH Wrote: Just got my 82120D - works great, I am one happy camperSame here! (09-13-2023 01:11 PM)KimH Wrote: PS: Ready for one more if/when you make a second batchI already have a beta unit, a production unit and three more in the pipeline. (one per production batch) Sylvain Côté |
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09-14-2023, 08:00 AM
Post: #51
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RE: More power (literally) for the HP-41, follow-up.
Just finished a marathon test with Diego's 82120D (Beta).
Setup: HP41CL with TIME module and the PPC rom plugged. Running PNG (Prime Number Generator) from the PPC manual examples, slightly modified to print the prime with the time indication and testing flag 49 for battery status, print this when BAT is low. Printing using the YPRT ROM to print into the serial port with a PC connected, printing to the HP82240 simulator in HP82143 mode. Running in TURBO 50 mode all the time with the serial port active. Running time until BAT appearance: 59 hrs 23 minutes Running time from BAT until OFF: 12 hrs 28 minutes Total running time 71 hrs 51 minutes, highest prime found is 455921 Compared with my own built 1100 mAh battery solution: total running time 36 hrs 35 minutes (no BAT indication) Compliments to Diego for another fine HP41 necessity! Here is the program used: Code: 01◆LBL "PNG" Regards, Meindert |
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09-15-2023, 07:25 PM
Post: #52
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RE: More power (literally) for the HP-41, follow-up.
Hi Meindert,
Thanks for sharing this test results and your kind words. :-) Special interest the running time after "BAT" annunciator, which gives an overall idea about the total capacity of the 82120D. Needless to say that this is a *one time* test and it is always recommended to charge the Power Bank early after the "BAT" is on, to extend the battery life. All the best from the Caribbean. Diego. "Do not suppose, check it twice." |
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09-17-2023, 05:35 AM
Post: #53
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RE: More power (literally) for the HP-41, follow-up.
Very interesting information!
Do you also know the Running time until BAT appearance by using LR1 NiMH with each ~ 500mAh in your HP41CL? I have to change the batteries every 2 weeks. And I am happy to get the new solution from Diego. +++++++ (09-14-2023 08:00 AM)MeindertKuipers Wrote: Just finished a marathon test with Diego's 82120D (Beta). |
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09-17-2023, 02:09 PM
Post: #54
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RE: More power (literally) for the HP-41, follow-up.
(09-17-2023 05:35 AM)Uli Wrote: Very interesting information! I do not have these batteries anymore, and in my setup I do not get a low battery at all. I now exclusively use 2 homebuilt packs of 1100 mAh each (the battery taken from a giveaway USB powerbank) and Diego's new product. Regards, Meindert |
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