Hp 41c battery.

Hp 41c battery 1 Answer stopped working after wrong battery installed. The configuration of the HP-41C is very much like a computer system. Shipping included in price for EU customers. Save PDF. IIRC HP-41C includes a diode in the CPU board to prevent damage to circuits due to errors in battery polarity. Apr 9, 2023 · this is coming from a new member and absolute HP-41C beginner, so please forgive me for any stupid questions / wrong jargon, etc. Send to HP to get it repaired. , in response to message #2 by Randy. As soon as I insert the serial battery pack the wand worked fine and read the lines. Does the adapter provide enough current to run the card reader? May 6, 2009 · I realized that this spring is very (VERY!) close to the gold plated traces on the underside of the P. Requirements: A small size screw driver Aluminium for connecting the batteries Two wires for minus / plus connectors Cohesive scotch Page 2 The HP 41C calculator not working anymore Page 3 The broken strip (battery corrosion HP made the battery contacts out of thin copper foil stretched over formed hard plastic. batt. > > I would put them back in and try again tonight. > > That's the recommended approach when a 41C locks up. I am new to this forum, and I hope somebody can help me. The BAT annunciator will also show in the display when this flag is set Message Flag. Free download of a black-and-white scan of the English-language book 'HP-41C/CV/CX Service Manual' by Hewlett-Packard, which is an advanced user's guide or advanced user's reference for the HP-41C, HP-41CV and HP-41CX calculators. The HP-41C series are programmable, expandable, continuous memory handheld RPN calculators made by Hewlett-Packard from 1979 to 1990. a couple of months ago someone here said that some kind of handheld game (pokemon mabye) uses n cells, so as long as kids are using battery operated noisemakers we have batteries. The terminals in the battery compartment are clean and uncorroded, and there are no rattling sounds from within the case. Because your HP-41C uses so little power, the batteries should normally last about 9 to 12 months, depending on how much you use the calculator. Each series uses its own type of battery pack. RE: HP 41C series battery issues Try measuring the voltage of the battery pack by placing a metal rule across the two inner batteries and your DVM leads on the outer two batteries to confirm that the calculator is being powered. You could also use a 1N4735A Zener diode, which has a higher power rating and is only slightly larger. Das erste Modell der 41er-Serie kam 1979 auf den Markt (09-23-2014, 01:10 PM) Eddie W. I used to have a card with an autoexecute program on it. Re: N batteries for HP 41's Message #16 Posted by Dieter on 12 Jan 2012, 4:04 p. Elle disposait également d'un écran à affichage LED très clair, offrant une visibilité optimale, même dans des conditions de faible luminosité. It provides 5 volts via 4 2/3C NiCds. Re: Replacement battery for HP-41C rechargeable pack Message #2 Posted by Ron Meek on 11 July 2002, 1:29 p. On trouve ensuite assez facilement en France des piles de Type N qui durent très longtemps, par exemple des piles Type N Duracell à 0,84 € pièce (plus 4,90 € pour le port pour 12 piles), ici : DURACELL MN9100 / LR1 / LADY / N / E90 / 910A The HP-41C represents both an evolution of capabilities and system architecture and a significant departure in technology and configuration. The HP 41c is a calculator that was first introduced by Hewlett-Packard in 1979. The original model, HP-41C, was the first of its kind to offer alphanumeric display capabilities. Recharger 82059D. 3 Score. , in response to message #5 by Jon. Shore Wrote: Is there anything I can use to clean off corrosion (or rust?) the golden battery contacts of the HP 41C without having to take the calculator apart? HP-41C: Serial Number: 2340S40265, 1983 Singapore: Accessories: Pouch: Quad memory module 82170A, s/n 2215 installed (made in Singapore) Manual: "Bedienungs- und Programmierhandbuch HP-41C" (German, 260 pages, Printed in USA, August 1978) (09-23-2014 01:10 PM) Eddie W. 92266B. The models of the Classic series are supplied by a battery pack that is build from 3 AA size NiCd cells. Re: Batteries for a HP 41 CX Message #7 Posted by db on 21 July 2000, 8:29 p. Early 41C units had spring-loaded contacts in the side "tunnel" that were intended for an external power adapter that HP never sold. Thanks for the answer! I thought the shield was meant to stay in the calc, and not on the battery pack. Using alkaline batteries, near the end of the battery lifetime, the BAT annunciator in the display will turn on, reminding you that about 10 to 30 days of operating time remain. Shore Wrote: Is there anything I can use to clean off corrosion (or rust?) the golden battery contacts of the HP 41C without having to take the calculator apart? The problem here is taht the copper layer on the flex circuit is quite thin, so there are a lot of chances that it has been completely destroyed by the (09-23-2014 01:10 PM) Eddie W. I. I have a HP-41C (square display edges, so "full nut"?). Refurbishing a 82120A today usually is done with 1/3 AAA cells, and NiMH instead of NiCd. Mar 21, 2025 · Includes a USB-C cable for easy connection to any USB power source (USB adapter not included). It is actually mentioned in step 10 in this book too. Later on, HP switched to a battery holder that uses the N alkaline batteries. HP Pavilion DM4t / DV3-4000 / DV6-3000 mfl 4400 mAh. Computers HP-75/D Battery HP 82001B Same pack as the classics. RE: Looking for a 82120A, HP 41C rechargable battery pack - quantalume - 01-05-2016 (01-05-2016, 02:22 AM) Nate Martin Wrote: The LiPO pack is still a work in progress with also the first prototype today, looks like everything fits so now I just need to lay out the circuit. On my 41C and 41CV the BAT announciator comes on as soon as the voltage of the battery pack has dropped to quite exactly 4 V, which means 1 Volt per cell - the usual final discharge voltage of a completely empty NiCd/NiMH battery. Chargers HP 82059B/C/D - not A, (82066B, 82068B 230VAC only) Output 8 V AC, 3 VA max. Board index HP41C Corroded Battery Flex PCB - Help. by hpbrian » Mon Sep 23, 2013 4:54 am . 8Vcc nominal). Today I decided to open it up and discovered the blue crud. It is made of a flexible circuit, already collated to an 3D-printed battery-expansion ports module, ready for assembly within your HP41c . 00 € IIRC HP-41C includes a diode in the CPU board to prevent damage to circuits due to errors in battery polarity. What I see people doing since long time ago is to either rebuild these 82120A packs with new NiCd batteries to keep using them, as usually NiCd batteries will soon or later die in Free download of a color scan of the English-language book 'HP-41C/41CV Owner's Handbook and Programming Guide' by Hewlett-Packard, which is an owner's manual (user's guide, operating manual, owner handbook) for the HP-41C and HP-41CV calculators. Shore Wrote: Is there anything I can use to clean off corrosion (or rust?) the golden battery contacts of the HP 41C without having to take the calculator apart? The problem here is taht the copper layer on the flex circuit is quite thin, so there are a lot of chances that it has been completely destroyed by the Adhesive circuit for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. 99. Nov 10, 2010 · The HP 41CX Calculator comes with 4 expansion slots, which can be utilized to drive a printer, accept print instructions from a barcode, or add a magnetic card reader. hi bas, i have currently two working prototypes on my bench. 0 volts so the 41 would see its input voltage drop from a good level quickly to 0 volts with little or no warning in time to change Jun 18, 2020 · IIRC HP-41C includes a diode in the CPU board to prevent damage to circuits due to errors in battery polarity. Not sure if cleaning the crud will revive this old friend. The HP-41C can use either one HP82170A Quad Memory Module or up to four HP82106A Memory Modules. Hello, Hopefully Dec 14, 2020 · hi bas, i have currently two working prototypes on my bench. I repaired two completely wor HP-41C: Serial Number: 2340S40265, 1983 Singapore: Accessories: Pouch: Quad memory module 82170A, s/n 2215 installed (made in Singapore) Manual: "Bedienungs- und Programmierhandbuch HP-41C" (German, 260 pages, Printed in USA, August 1978) The first HP-41C calculators came with a rechargeable battery pack. New Listing Hewlett Packard HP 82120A Rechargable Battery Pack for HP-41C - Manual ONLY. m. Assembled Battery-back port module r epair kit for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Re: HP-41C battery shield Message #3 Posted by Klaus on 12 Aug 2006, 12:29 p. Aug 10, 2023 · HP-41C questions - HP 41C Switching On Problem - Need Help With HP 41C Calculator Repair - stopped working after wrong battery installed - Decimal points going to 2 places - Restore to original status - HP-41CV Calculator not turning on - Where to buy battery contacts for hp 41cx? HP-41C/CV/CX. Mar 6, 2025 · This is a very well done 3D printed battery pack for my HP 41C. I've acquired an MT3068 DC-DC converter. On my 17 yr old CX, the flex circuit which makes up the battery contacts and module port contacts had problems at the area that makes contact with the main circuit board. Page 1 HP-41 C repair guide A simple instruction to get a HP 41C working when battery contact strip is broken. Re: HP-41C/CV/CX Battery Pack Circuit (burnt diode) Message #3 Posted by John Keith on 24 Jan 2008, 8:55 p. 055 FF puis 1. I re-discovered it about a decade later and saw that it had battery damage from leaking cells. The main issues for me is leakage, the CX or a C/CV with a timer module draws enough current to slowly flatten nicad bateries to the point where they leak chemicals without even indicating "lowbat". 17 "hp 41c" 3D Models. I recharge them with an old Motorola pager that had been run over, but still had the charger and the cradle. Peel up the feet and remove the screws. The battery voltage won't be added to the USB voltage, but you definitely don't want the USB to charge alkaline batteries Re: HP-41C: +3V inner battery contact Message #3 Posted by Luiz C. This will leave a flat end to the battery that matches the original HP battery pack's design. , in response to message #1 by thib. I popped it in my calculator and started using it again. (09-23-2014, 01:10 PM) Eddie W. Shop AAA, coin cell and more batteries to get high-performance power for your device. The HP-41C uses CMOS (complementary MOS) circuits throughout and has an alphanumeric liquid crystal display. 83; Brand: Energizer Cleaning or Replacing Battery Contacts My HP-41CX had badly corroded battery contacts because the last set of cells had been left in it for several years. Page 4 HP-41CV Decrement and skip if equal or less. here's my take on it. Assembled HP-41c battery bay and expansion ports module Flat. Hello Jon & all! As requested, I propose a few pics of an Hp-41 battery pack recelled with 1/3 AA: Hp-41C battery pack recelled with 1/3 AA. The problems, that I have met were poor contacts due to corrosion. Find the right batteries for your Hewlett Packard HP41C Calculator Battery at Batteries Plus. Skip to content. $39. Re: HP-41CV battery pack Feb 26, 2024 · HP released the 82120A Rechargeable Battery Pack (and an AC Charger) as an alternative to the standard non rechargeable Battery Pack using dry N sized batteries. Verified purchase. USER Mode Annunciator Parts for battery-back port module repair kit, or module assembled for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. For many people, the HP-41C was their introduction to computer programming. Shore Wrote: Is there anything I can use to clean off corrosion (or rust?) the golden battery contacts of the HP 41C without having to take the calculator apart? The problem here is taht the copper layer on the flex circuit is quite thin, so there are a lot of chances that it has been completely destroyed by the leak. It is a programmable scientific calculator that offers a wide range of mathematical functions and capabilities. Hi Erik, Good idea! I've used the same stuff for several difficult to repair electrical contacts (e. Nicely bagged parts. BTW, though I am a Canadian I bought my 41C when visiting relatives in San Francisco. Finns i lager Köp 529 kr. HP 41C Repair. All modes described there are supported except for the ‘TRACE with stack’ option. g. Edit 1: Got the batteries (they are NiCd batteries after all), charged them and when I put them in my HP-41CX, I don't get any low battery indication. Hi Todd, the main difference is the trim around the screen. Jan 23, 2017 · I've just received an HP-41CV and a few modules, for the cost of shipping. The HP-41CV does not use any memory modules. HP41c perfectly working, with Sep 7, 2017 · All about the HP-41C caclulators. That worked for me once too. (60+ HP-41 links on the links page, This calculator has been sitting in my cupboard for well over 15 years unused. HP-41C Price at introduction: $295 HP-41CV Re: hp 41c battery pack replacement Message #3 Posted by donald wallace on 11 Oct 2005, 4:39 p. Past 6 months. HP41 battery installation Message #1 Posted by pete gianakopoulos on 15 May 2012, 11:53 a. What I see people doing since long time ago is to either rebuild these 82120A packs with new NiCd batteries to keep using them, as usually NiCd batteries will soon or later die in Dec 11, 2020 · when reviving my HP-41CL's configuration for the umpteenth time after an unforseen power loss (or getting an unresponsive HP-41C just because CLONIX is a tad picky when it comes to inrush current), i was no longer having it and decided to do my own rechargeable battery pack. Mar 6, 2025 · (Fits HP-95, HP-97 and 41C Printer. 4. Re: "allbugs" HP 41C Message #2 Posted by Steve on 1 Oct 1999, 9:08 p. Even though there are significant differences between the HP-67/HP-97 calculators and the newer HP-41C, the HP 82104A Card Reader enables you to use nearly all current HP-67/HP-97 Application Pac Programs, as well as most of the programs in the vast HP-67/HP-97 Hewlett-Packard User’s Library. , in response to message #4 by Marx Pio. It's black but still looks great when installed. , attaching leads to solar cells and fixing rear window defroster contacts), but never for a contact that's likely to see some wear and tear. HP 82120A (Hurricane) - Rechargeable battery pack. , in response to message #15 by Garth Wilson. I absolutely love my little calculator (PX-41c) that I assembled out of the kit that Alex designed. 09. The battery holder has new stainless steel springs and battery retention wings. , in response to message #2 by Raymond Del Tondo. The back will come away easily. BAT - Annunciator support: Indication of near empty battery is working. , in response to message #1 by Russ Henderson. „DSE nn Feb 14, 2008 · On en trouve sur eBay depuis quelques minutes un neuf en achat immédiat pour 24,50 euros avec les 4 piles neuves (et un port très raisonnable de 5,5 euros pour la France) : NEW BATTERY CASE & BATTERIES HP-41C, HP-41CV & HP-41CX. it is right now commencing a 2000 h stand-by test to figure out as to whether real-life battery drainage complies with calculations. Battery Pack HP 41C/CV/CX Calculator Replace 82120A with Alkaline N-cells. Feb 22, 2024 · HP released the 82120A Rechargeable Battery Pack (and an AC Charger) as an alternative to the standard non rechargeable Battery Pack using dry N sized batteries. Good luck. , in response to message #1 by Erik Wahlin. C. After the control was transferred to a 68000-based HP9000-series computer, I kept using the HP-41cx daily, but not constantly, and a set of batteries lasted a couple of years. The calculator was in a drawer for 15+ years and would not turn on. Der HP-41C und die Nachfolgemodelle HP-41CV und CX waren programmierbare Taschenrechner von Hewlett-Packard. 3 Answers . When this flag is set battery power is low. HP-41C. 8V. This calculator will not work properly if the case halves are not held securely together. At $295, it was less expensive than a personal computer, and—through the HP Interface Loop (HP-IL0)—it could be hooked up to a printer, plotter and mass-storage device. I have been using "N" rechargeable batteries in my calculator since it was new. MEMORYLOSTdisplay indicates that ContinuousMemoryhasbeencleared. Apr 9, 2025 · See the HP-82160A HP-IL Module manual section ‘Flags and the Printer’ on pp. Also mentioned (in step 12) is to put the calculator on a hard surface, lift up one end about an inch, and set it down fairly firmly. RE: Hurricane II: An HP-41C Battery Pack w/ USB - Massimo Gnerucci - 12-11-2020 (12-11-2020, 06:39 PM) Hans Brueggemann Wrote: with its anemic energy content, utterly long charging time, short lifespan, and inability to supply the card reader about just every time you would need reading a magnetic card, the HP 82120A Hurricane truly belongs into the "most disappointing HP accessory of all Re: battery holder for HP 41C - Steve (Australia) - 02-17-2001. It will hold the output voltage as set until the input voltage falls somewhere below 2 volts. This Alkaline battery is a replacement for HewlettPackard(HP) HP41CX Calculators. Playing with the unit some more I find if I insert the battery pack just right it will come on for a few minutes before locking up again. 00 shipping "Remove this shield before using rechargeable battery pack HP82120A" I am not sure if it is a product of HP, because the construction is a bit unfortunate: It has four rivets with sharp heads that make contact with you HP-41C's battery contacts. After eBay came into being, I got a double extended memory module, and battery life dropped to six months. , in response to message #1 by Ignacio Moratinos. HP 12c Financial Programmable (Beginning with Serial# CN11500001) HP 12c Platinum Financial Calculator; Battery Chemistry. I also have a Card Reader Handbook and several application pac Assembled Battery-back port module r epair kit for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Used internally and always tests clear Alpha Mode Flag. Eddie W. Computers HP-94D/E/F Battery HP 82430A The 94 battery pack is a sealed unit which screws onto the side of the computer and also serves as a handle. (09-23-2014 01:54 PM) ElectroDuende Wrote: (09-23-2014 01:10 PM) Eddie W. HP-41C flex circuit problems Message #1 Posted by Brian on 30 Sept 2001, 7:44 p. Extended-use rechargeable battery 92266B Extended use charger 92266A HP-41C : Prix à l'introduction en France : 2. There it eventually shorts out signal traces or even the supply traces; the result can be a temporary short of the battery, leaving the battery drained down, and producing strange effects & memory losses. Every Day new 3D Models from all over the World. Nov 12, 2018 · (11-12-2018, 10:02 AM) grsbanks Wrote: Does anyone have a reference for the Ni-Cad cells in the HP-82120A battery back for HP-41C? Originally the pack had four 1/2 N sized NiCds. Hi. Featuring a compact and portable design, the HP 41c offers flexibility and convenience for users on the go. 37 was - ILS 21. My original intention was to buy a 29C but was blown away with this LCD, alphanumeric, expandable portable computer. 2) Battery use and calculator care instructions. MemoryExtensions Caution: Turnthe HP-41C offprior to removingor insertingplug-inextensions. All LED calculators and the HP-41 series are supplied by rechargeable battery packs. I've installed a known good battery pack from another 41 that I use, but the HP-41 mentioned above does not turn on. About the 5Vcc, the HP41 works with 5Vcc somehow because you can use four N-size rechargeable batteries (aprox. or Best Offer. (12-13-2020 01:38 PM) HP-Collection Wrote: Seems to become a new mass product: I suggest: Maybe there is a nice 3D printer where the PCB and the recharging batteries fits perfect, contacts between the batteries and to the calc can be done by old Siemens Gigaset Battery springs (at least that's my best goal) Feb 14, 2018 · I have some close relationship to them, because the HP-41C was the first thing, that I have programmed in the end of the 1970s. Vieira (Brazil) on 18 Mar 2012, 10:37 p. A dime made a good spacer and let La HP 41c était dotée d'un processeur rapide et d'une mémoire extensible, ce qui permettait aux utilisateurs de stocker et de manipuler une grande quantité de données. 5; Weight: 4. Specifications: Chemistry: Alkaline; Voltage: 1. This is not ideal for use in an HP-41 as many lithium-ion batteries have protection circuitry that shuts off their output at 3. HP 41C Switching On Problem. Alkaline 1 Filter Options for Voltage Availability: Ships within 1 business day Product #: E90BP. Just click "Start slideshow" to get bigger pictures. I believe the calculator was redesigned because the electronics got smaller and they could redo the 41C* so that all the electronics could get in just one Sep 19, 2024 · Battery Pack HP 41C/CV/CX Calculator Replace 82120A with Alkaline N-cells (#225057243292) u***a (865) - Feedback left by buyer. Overtightening the screws can strip the threads and lead to a malfunction. In the HP-41CX, where it had been used, it destroyed the battery contact foil. Bumps do not appear to be symmetrical, so I suspect they are due to damage from the back side. i'm looking for battery droop in mV / day figures. Sort by: Spacer set for repairing old HP41c. The only external power solution HP offered was the 82120A rechargeable pack, which would accept an 82059A charger (or the equivalent for other regions). I purchased a 41CV from eBay. Filter. Re: HP-41C battery contact fix Message #2 Posted by Katie on 3 Dec 2000, 1:28 a. - There are two variants of the 82033A battery pack. The contacts inside the calculator look very clean. There are four screws underneath the feet that are held on with adhesive. It came complete with springs AND batteries! It fits great n my 41C. Click to find the best Results for hp 41c Models for your 3D Printer. Sep 23, 2013 · All about the HP-41C caclulators. -- Karl S. Are programs from the HP User's Library still available? Tragically, many years ago, the entire User's Library was dumped into the trash. Hp-41c. $35. (Refer to Batteries, page 240). . HP-19C printer overhaul discoveries; Spice Service Tips (HP-31E, 32E, 33E/C, 34C, 37E, 38E/C) HP-41 Series and Peripherals Repairing an HP-41CX; Resetting an HP-41C; Repairing the HP 82104A Card Reader. The HP 82120A is a rechargeable battery pack for the HP-41 series calculators. 10. Cut a 1/4" (6mm) long piece for each terminal and solder over nasty, rotted battery connection points. I hope I can repair it. Post: #1. Capacity: 2200 mAH. All three calculators had leaking batteries and the liquid has oxidized the copper of the battery contact block. 37. 50. 55. Durable Design: Professionally 3D printed in Nylon for a strong and lightweight construction. This HP scientific calculator comes with a 12-character high contrast alphanumeric LCD and a completely customizable keyboard. This is my original HP-41C that I bought in 1980. ILS 17. The board takes a CR2025 and I only had a thinner battery. Shore Senior Member: Posts: 1,621 Joined: Dec 2013 HP 41C Battery Contacts (Cleaning?) Hewlett Packard HP Battery Holder for HP-41C 41CV 41CX - Tested. Howard Owen wrote: > > I removed the batteries from the calculator since last night. Please look to the attached manual. These are no longer available. Here is a perfect chance to fix something! The HP41 nicad pack isn't the easiest to open, but isn't too hard either. Table of Contents. You insert the A/C supply in the side port to charge the battery pack while using the calculators. when reviving my HP-41CL's configuration for the umpteenth time after an unforseen power loss (or getting an unresponsive HP-41C just because CLONIX is a tad picky when it comes to inrush current), i was no longer having it and decided to do my own rechargeable battery pack. 9-10 for use and meaning of the various Printer modes and controls described above, activated using Flags 15, 16 and 21. Re: hp 41c battery pack rebuild with 1/3AA Message #7 Posted by Etienne Victoria on 28 Sept 2005, 12:46 p. Seems inevitable that it will fail. For the 82019B, 82109A and 82052A battery packs remove the end tabs before inserting into the plastic pack. Methods to repair the battery bay corrosion - probably the most frequent failure mode for HP41 calculators (HP41c, HP41cv and HP41cx) New HP Voyager connecting cable for USB C - now taking orders Search Dec 4, 2003 · Bumps do not appear next to the SST key on the HP-41C. Apr 25, 2010 · I'm also looking at some batteries to replace those in the rechargeable battery pack, mainly the Varta 422-371 but I need to find someplace that has international shipment options. It appears very solid and well made. Please choose option! New  price: cheaper circuit translating to 10% lower price! Battery-back Jun 30, 2021 · All about the HP-41C caclulators. Background an Information. This pack contains 4 small (1/2 N size) rechargeable batteries and an electronic circuit to charge these batteries. Aug 23, 2020 · 1) Repair kit for HP-41c battery bay and expansion ports 2) Assembled HP-41c battery bay and expansion ports module 3) Assembled HP-41c battery bay and expansion ports module Flat The battery type for the HP 41CV is a NiMH (Nickel-Metal Hydride) battery with a capacity of 170 mAh and a voltage of 4. proto #1 is feeding a HP-41CX plus CLONIX. Green Cell-batteri för HP Pavillion 14, 15, etc, ersätter HT03XL, L11119-855, etc. imho, of course. Sanding the contacts merely got right down to the plastic under the contacts. The best way to repair 41 battery contacts is with 1/8" (3 mm) brass channel that is available in hobby stores. This HP business calculator uses reverse Polish Rechargeable battery pack 82120A. It is the real deal, in any way imaginable, just a lot better, compared to the legendary HP-41c: much longer battery life, more memory, backlit/better display, easier to configure, in-built clock, running much faster and a more compact form factor that allows you to carry it anywhere and not Hurricane II: An HP-41C Battery Pack w/ USB with its anemic energy content, utterly long charging time, short lifespan, and inability to supply the card reader about just every time you would need reading a magnetic card, the HP 82120A Hurricane truly belongs into the "most disappointing HP accessory of all times" category. HP 95, HP-97 and 41C Printer. Because the HP-41C uses so little power, the normal battery life should be 9-12 months, depending on the freshness of the batteries installed and how much you use your calculator. Hello all, I'm new to the forum, but have been following it for a few months and rejoined the fray quite recentky when I acquired a 41CV with Time Module, X-Functions Module & Quad Module (like many other, my dream machine of the 80s). Upon opening it, it turned out that the battery contacts were corroded. 650 FF, HP-41CV : Prix à l May 16, 2005 · HP Xpander Battery Compartment / Changing, Eric 6 responses; New HP49g+ ROM operating system!!!!!, Boco 2 responses; 48SX ON/OFF button, Seb 3 responses; hp 41c battery pack replacement, Russ Henderson 9 responses; Finding RPN Calulators example program!, peter 2 responses; HP 19B not working, GChu 0 responses (09-23-2014 01:10 PM) Eddie W. ) HP 41C Card Reader Repair; HP 9114 repairs; Pioneer Repairs; ElectroStatic Discharge: a possible solution for the HP48 (09-23-2014, 01:10 PM) Eddie W. It is a Schottky diode, whose forward voltage drop is less than the forward voltage drop of an ordinary silicon diode, a not-so-usual and nice engineering detail. The calculator is in very good condition- cosmetically, that is. Dec 3, 2021 · The most recent case of that was the PX-41C, a replica of the classic HP-41C. Later came the HP-41CV and HP-41CX, offering more memory and functionality. Re: HP 41C Battery Contacts Repairable? Message #5 Posted by Randy on 13 June 2004, 9:04 p. Jun 2, 2010 · Par exemple ici à 28 euros avec le port : NEW BATTERY CASE HP 41C HP 41CV HP 41CX CALCULATORS. Pre-Owned · HP. 00 € In stock Assembled HP-41c battery bay and expansion ports module Flat. , in response to message #1 by AlbertTocarLoseggs. Designed to be folded in shape, it has an adhesive back with a 3M Very High Bond surface. (For the HP-41C. Jun 18, 2020 · IIRC HP-41C includes a diode in the CPU board to prevent damage to circuits due to errors in battery polarity. The program was simply STO c. , in response to message #1 by Todd Popovich. I used it heavily and then about 1990, it went into storage. The bugs are of interest because: a) they're there b) they allowed the internal structure of the calculator to be probed c) they allowed new "synthetic" instructions to be coded d) only the earliest calculators have the really interesting bugs (that HP fixed really quickly) and are thus HP 41C Battery Contacts (Cleaning?) 09-23-2014, 01:10 PM . There are plenty of HP-41 experts on this Forum; I personally have an early fullnut 41C, a halfnut 41CV, and a late fullnut 41CX, plus a few peripherals and ROM Pacs. The best thing to do when BAT turns on is to put HP-41C batteries on your shopping list. Included was a dry cell battery case; the problem is that there is no polarity depiction of how the batteries are supposed to be installed. (09-23-2014 01:10 PM) Eddie W. It installs and removes very much like the original. A 12 euros environ les 4 piles, le total semble une assez bonne affaire. Extended use charger 92266A. The HP-41C did not have a volume I or II owners manual, just an Owner’s Handbook and Programming Guide and quick reference guide. To replace the batteries, use the following procedure (you may want to read through the entire battery replacement procedure prior to replacing the batteries): This Alkaline battery is a replacement for HewlettPackard(HP) HP41C Calculators. Remove the battery pack. When the HP-41C is in alpha mode flag 48 is set, otherwise flag 48 is clear Low Battery Flag. 2) If so, is the motor from the HP-41C card reader identical? 3) I haven't yet rebuilt the battery, so the calculator was running from its adapter (which supplies regulated power to the 67, unlike some of the newer calculators where the battery acts as the regulator). I finally found some batteries for it (N size) and live video'd the powerin Re: HP-41C* Halfnut vs Fullnut Message #2 Posted by jbssm on 19 July 2006, 4:31 p. There are four battery contacts. [] actually the HP-41CX manual recommends shorting the battery terminals > Another trick is to reverse polarity on the batteries and briefly > plug The earliest known HP-41C has a prefix of 1926 (1979 week 26), according to the HP Museum. Was: ILS 21. Our replacement Calculator Batteries deliver longer, more dependable run time and meet or exceed all OEM specifications. Extended-use rechrgbl. New Listing NOS Vintage 1981 HP-41C/CV Calculator Overlay Kit 82152A SEALED. Shore Wrote: Is there anything I can use to clean off corrosion (or rust?) the golden battery contacts of the HP 41C without having to take the calculator apart? The problem here is taht the copper layer on the flex circuit is quite thin, so there are a lot of chances that it has been completely destroyed by the 41CV Battery Life Message #1 Posted by Francois Fornier on 7 Mar 2006, 8:16 a. Part number P092 (no T suffix) are flat-top cells without tabs. $5. , in response to message #1 by Dave Mabry. thebasicHP-41C). To charge the battery pack a dedicated charger must be used. HHC 2023, October 7-8, 2023, Orlando, Florida: Sylvain Côté presents "82120D Rechargeable Battery Pack for HP-41C", describing Diego Díaz's lithium ion batte HP Calculator Literature Aug 26, 2022 · All about the HP-41C caclulators. xrjb wgyl xbfns bmpex fnyy frldg dhqi bfay tuus ups