Hp 41c battery HP released the 82120A Rechargeable Battery Pack HHC 2023: 82120D Rechargeable Battery Pack for HP-41C (Sylvain Côté) Jose Mesquita RadioMuseum. - The 82120A (41C) rechargeable battery pack uses 4 1/2-N cells. The battery holder has new stainless steel springs and battery retention wings. HP-41C/CV/CX Programming. MattiMark Member: Posts: 76 Joined: Dec 2014 Wanted: Battery pack for HP-41C/CV/CX . $35. He then sends you a new one. Jun 16, 2021. The problems, that I have met were poor contacts due to corrosion. HP Forums / HP Calculators (and very old HP Computers) / General Forum Threaded Mode | Linear Mode. The HP-41C series is complex and extensible. 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. Hp-41C battery pack recelled with 1/3 AA The Continuous Memory of your HP-41C will normally be preserved for about 30 to 60 seconds while the batteries are out of the calculator. I DON'T KNOW IF IT CATCHES. 3. Find many great new & used options and get the best deals for Hewlett-Packard Genuine Battery Holder/Carrier for HP 41C/41CV/41CX Calculator at the best online prices at eBay! Free shipping for many products! Skip to main Battery pacs are sometimes repaired while you wait. (NO Battery Pack) Pre-Owned · HP. Decimal points going to 2 places. Hello all, As a student, I was one of first HP 41c buyers. answer accepted (01-10-2020 02:15 PM) Craig Bladow Wrote: (02-26-2019 12:04 PM) Artur - Brasil Wrote: I just have one doubt about my project: what will happen when battery discharge too much Best wishes! Artur, did you find out what happens when the battery is discharged to a low voltage? From looking a lithium polymer battery pack specifications on line, if they have 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 41c battery pack replacement could feasibly fit in the battery compartment. Low Battery Flag (flag 49). PeterP Member: Posts: 231 Joined: Jul 2015 RE: USb Charging & rechargable batteris HP41 . 3. When you execute the ON function ( XEQ ALPHA ON ALPHA ), the turn-off feature is disabled and the HP-41C will no longer automatically turn itself off. yesteryear (21) 100% positive; Seller's other items Seller's other items; HP-41C questions - HP 41C Switching On Problem - Need Help With HP 41C Calculator Repair - stopped working after wrong battery installed stopped working after wrong battery installed. . IR Printing. My HP 41C is dead. There are also sections on calculating machines and slide rules as well as sections for buying and selling HP calculators, an HP timeline, collecting information and a software library. The low-battery indicator goes on when the batteries are down to about 1. Peel up the feet and remove the screws. Download Table of Contents Contents. Yay! It works! Great job on the design, the 3D HP41 battery installation Message #1 Posted by pete gianakopoulos on 15 May 2012, 11:53 a. Message Flag (50) Assembled HP-41c battery bay and expansion ports module Flat. An AC adapter is available as an HP 41C (RPN, programmable) - not turning on even with batteries. Specifications: 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. After the control was transferred to a 68000-based HP9000-series computer, I Battery Pack HP 41C/CV/CX Calculator Replace 82120A with Alkaline N-cells (#225057243292) h***s (68) - Feedback left by buyer. HP-41C. Home. Personally I don't think it makes a lot of sense to use a 41C with an AC adapter or NiCd they are 150mAH instead of 75mAH of the 41 rechargeable pack, and you don't have to rebuild any battery packs should they ever You put it into you HP-41C, and it protects the battery contacts. m. Hewlett Packard HP Battery Holder for HP-41C 41CV 41CX - Tested. I would like to offer rebuilt battery packs that I have for HP 41 series calculators. 5-volt button-cell 2 Repairing an HP-41CX. Shipping included in price for EU customers. Replace SPRINGS HP 41C/CV/CX Calculator N-cell battery pack. waterhosko (8281) 99. Verified purchase. g. Spice (HP-31E, 32E, 33E, 33C, 34C, 37E, 38E, 38C) Battery HP 82109A 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. cartIcon. Our replacement Calculator Batteries deliver longer, more dependable run time and meet or exceed all OEM specifications. All about the HP-41C caclulators. HP-41C Handbook Fold Out: Contents: Introduction Getting Started Display Control Memory Stack HP-41C Functions Storing Recalling Insert the battery holder into the calculator such that the exposed ends of the batteries are pointed toward the input/output ports. I finally found some batteries for it (N size) and live video'd the powerin Need Help With HP 41C Calculator Repair. Wiederbelebung eines HP All about the HP-41C caclulators. Wayne. 00. Re: HP-41CV battery pack Message #4 HP-41CV battery pack Message #10 Posted by Paul Kronfield on 26 Apr 2004, 5:25 a. 12. Display Format Control: There are three functions, FIX, SCI, and ENG, that allow you to control the manner in which numbers appear in the HP-41C display. Battery Test. 00 g This was pulled out of a working HP-41C calculator and is in very good condition as can be seen in the photos. HP Forums > HP Calculators (and very old HP Computers) > General Forum > 41C battery contact repair. ILS 50. 26. accepted HP-41C 1 Answer . User/Grad-Rad Mode Annunciator. When this flag is set battery power is low. They look to be the same diameter as a I've just received an HP-41CV and a few modules, for the cost of shipping. Operations Flags HP-41C Functions Storing Recalling Functions Functions cont. zelez @zelez_2150528 Follow Following. Držák baterií pro kalkulačku HP-41C . Remove the battery pack. , HP-41C/CV/CX. Sign In Upload. 20 mm . 8% positive; Seller's other items Seller's other items; Contact seller; 45 thoughts on “ HP-41C, The Forth Edition ” Olaf says: October 21, along with a wickedly long battery life. I e-mailed all my colleagues to see if any of them had any old HP calculators lying around, and one of them did. Corroded Battery contacts Instructions for battery and ports module Open the calculator. Search. HP41c perfectly working, with all port covers and battery holder in HP 3D printing process. thenicadlady. All registers that are not allocated as Primary or Extended data storage registers are part of program memory. 3d 15h. 5-volt N-cell 3 Duracell MN9100. Hi Erik, Good idea! I've used the same stuff for several difficult to repair electrical contacts (e. HP 12c Financial Programmable (Beginning with Serial# CN11500001) HP 12c Platinum Financial Calculator; HP 12c Prestige Financial; Battery Chemistry. They are 4. Schematic Diagram. 1× print file . Panasonic LR44 HP 6s. Battery Pack HP 41C/CV/CX Calculator Replace 82120A with Alkaline N-cells (#225057243292) See all feedback. This calculator has been sitting in my cupboard for well over 15 years unused. Seems inevitable that it will fail. components. Share. HP41C Corroded Battery Flex PCB - Help. Wake Forest, NC / Closes at 8 HP 12c Financial Programmable (Beginning with Serial# CN11500001) HP 12c Platinum Financial Calculator; HP 12c HP Battery Information Warning! The easiest way to revive an old HP-41C is to buy N cells for the standard holder. When the HP-41C is in ALPHA mode, flag 48 is set, when not, flag 48 is clear. 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. I hope I can repair it. HP 82120A (Hurricane) - Rechargeable battery pack. Low Battery Flag (49) When this flag is set battery power is low. Component Location Diagram for Logic PCA. YEAR OF MANUFACTURE: 1980. The back will come away easily. • Corrosion can be cleaned off the battery/port connector and the damaged connectors tinned with solder but beware of melting the plastic. BATTERY PACK FOR HP-41C. Showing 1 of 1 CHUI HT wrote:Hi Where can I buy a battery contact unit for my HP 41CX. Accepted an answer. 31. In my calculator, The HP 41C was one of many Hewlett-Packard calculators to blur the line between calculator and computer. 5-volt button-cell 1 HP 12c platinum and prestige series. 5 1 Filter Options for Size. Send to HP to get it repaired. This Alkaline battery is a replacement for HewlettPackard(HP) HP41C Calculators. This pack contains 4 small (1/2 N size) rechargeable batteries and an electronic circuit to charge these batteries. SST Flag 51 x Not applicable. MEMORYLOSTdisplay indicates that ContinuousMemoryhasbeencleared. Turn the calculator over in your hand and Battery description # Common P/N. I assume that the shiny substance on the inside is battery leakage, but I have not yet cleaned it, out of fear of damaging it. Restore to original status. 59 shipping. Enter your search keyword HP made the battery contacts out of thin copper foil stretched over formed hard plastic. First remove the rubber feet. Today, 01:23 PM . This printer was introduced with the first hp 41c. 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 I am interested in a rebuilt battery pack for the HP-41. 40 mm . If you have a charger that charges n-size, that's the this is coming from a new member and absolute HP-41C beginner, so please forgive me for any stupid questions / wrong jargon, etc. Around the time of the HP-67, an article in the Hewlett-Packard Journal, stated that electronic technology was no longer the only limitation of pocket calculator progress. the. Repair kit for HP-41c battery bay and expansion ports. It is actually mentioned in step 10 in this book too. Contact thebasicHP-41C). 7%. Skip to main content. 4. the web which suggested that this problem was due to a break-down of the capacitor C1 which holds the memory during a battery change. Panasonic CR2032 1. Cleaning or Replacing Battery Contacts. Remove the battery case, by first sliding the case towards the top of the calculator until the bottom end of the battery case pops free. Bumps do not appear to be symmetrical, so I suspect they are due to damage from the back side. cncjerry Junior Member: Posts: 4 Joined: May 2017 41C battery contact repair . In order to conserve battery power, the HP-41C will automatically turn it­ self off after ten minutes of inactivity. Does anyone have a reference for the Ni-Cad cells in the HP-82120A battery back for HP-41C? I've just acquired a 41CV that has one of these and, unsurprisingly, the cells in the battery pack are dead. 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. 0 Score. Assembled HP-41c battery bay and expansion ports module Flat. Fully tested AC adapter HP-82059B. The Hewlett Packard 82143A Peripheral Printer connects to the venerable HP 41C series of calculators (41CV & 41CX). This calculator will not work properly if the case halves are not held securely together. Thanks, Matti. NOTE: IT DOES NOT HAVE BACK BATTERY COVER. 00 shipping. I guess this has happened to many HP-41CV users before Mine has suffered total corrosion in the golden contacts that connect the battery holder to the flexible circuit board. I have been using "N" rechargeable batteries in my calculator since it was new. battery holder for HP 41C Message #1 Posted by Christian on 16 Feb 2001, 4:34 p. The low battery flag is used to indicate low battery power. Check out Prusa's Black Friday Deals. accessibilityLabel. 04-06-2024, 11:59 PM. I opened the 41 up and changing C1 looked straightforward so I 48: Alpha Mode Flag. I used to have a card with an autoexecute program on it. I recently used a trimmed piece of 3M adhesive-backed, copper tape. 82. IIRC HP-41C includes a diode in the CPU board to prevent damage to circuits due to errors in battery polarity. HP Calculator Battery Pack Rebuild by Chris Codella, W2PA; Forum discussion about renew battery pack HP-97; Using 4/5 AA cells as power source for spice BAT (Battery) Low Power Annunciator: If the BAT annunciator is displayed, this means you have about 10-30 days of operating time left (using alkaline batteries). Here's a list of what I use for replacement nicad batteries in all the rechargeable HP calculator battery packs. Take care. Pre-Owned · HP. Be careful not to damage the Availability: Ships within 1 business day Product #: E90BP. It can be turned on again by pressing the HP 41c Locking Up Message #1 Posted by Art Wong on 13 Sept 2000, 7:02 a. Panasonic AM5 19b, 19bII, 28c, 28s HP 30s 1. The program was simply STO c. Leather Case included in any HP15c CE order until 12. Carefully remove the four rubber feet, using a pointed knife to pry up one corner of a foot and a pair of tweezers to lift the foot from the case. Find the right batteries for your Hewlett Packard HP41CV Calculator Battery at Batteries Plus. key on the HP-41C. oldturkey03 805. 0. I am interested in a rebuilt battery pack for the HP-41. Here you can find software, accessories, modules, overlays, spare parts and repair techniques. Držák baterií pro kalkulačku HP-41C | Download free 3D printable STL models. 111 sold. 139 sold. These small LiPo's are 130mAh and with the BEC would yield a major increase in over-all pack capacity. 00 Free download of a grayscale scan of the English-language document 'HP 82120A Rechargeable Battery Pack Instruction Card' by Hewlett-Packard, which is a quick reference guide or quick reference card for an accessory for the HP-41C, HP-41CV and HP-41CX calculators. CHUI HT wrote:Hi Where can I buy a battery contact unit for my HP 41CX. Also for: Hp-41c. Calculator HP HP-41 C Repair Manual The Museum of HP Calculators displays and describes older Hewlett-Packard calculators. org member. If any HP 82106A Memory Modules are also plugged in (HP-41C only), the time module must be in a port that is numbered higher than any port containing an HP 82106A Memory Module. 61 shipping. Making New Battery Packs for the HP-35 Calculator by Douglas W. 115 sold. Looping Subroutines Ind However, certain battery manufacturers may arrange for the repair of the calculator if it is damaged by the batteries. We wrote the HP41 repair book! Leather Case included in any HP15c CE order until 12. It was the first Hewlett-Packard handheld device to feature an alphanumeric keyboard and expansion ports for peripherals. When the HP-41C is in alpha mode flag 48 is set, otherwise flag 48 is clear 49: Low Battery Flag. It is made of a flexible circuit, already collated to an 3D-printed battery-expansion ports module, ready for assembly within your HP41c. I think that my NiCd-package gave up working. 50 each. The battery contacts has corroded. (you may want to read through the entire battery replacement procedure prior to replacing the batteries): 1. Shop AAA, coin cell and more batteries to get high-performance power for your device. Hello Jon & all! As requested, I propose a few pics of an Hp-41 battery pack recelled with 1/3 AA: . This guide covers basic operations of the calculators, card readers, and wands. 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). $5. HP-41CV calculator pdf manual download. I purchased a 41CV from eBay. Shop by HP-41Cs were supplied with a battery holder, four I/O port covers, and a side charger port cover. The contacts inside the calculator look very clean. 0 reviews . Browse our selection now. FIX displays numbers in fixed decimal point format, while SCI permits you to view numbers in scientific notation format. Frequently it can be fixed by turning it off and briefly removing the battery pack to interrupt the power. If anyone is interested 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. 1 bid. Sticky or unreliable keys: Dirt, spilled HP 41C, 41CV, 41CX rebuilt rechargeable battery packs. this is coming from a new member and absolute HP-41C beginner, so please forgive me for any stupid questions / wrong jargon, etc. Hewlett Packard Calculator Battery 2200 maH for HP-95, HP-97, 41C Printer (#224183554792) 9***9 (133) - Feedback left by buyer. Push the upper edge of the battery 41C battery contact repair - cncjerry - 04-06-2024 11:59 PM I see where you can purchase new battery contacts either fully or just the flex PCB. When allocated as program memory, the standard HP-41C registers provide space for 200-400 fully-merged lines of programs. Background an Information. 1 Answer . The HP-31C series of calculators HP-41C/CV/CX. 1. Looping Subroutines Ind. Vintage Hewlett-Packard HP 45 Calculator + HP 41C Soft Case . Battery pack was received fully charged. I see where you can purchase new battery contacts either fully or just the flex PCB. What I would like to find is a battery holder replacement that when installed would power the HP-41C direct from a USB cable plugged in through the normal power port. Size. It wouldn't be worth fooling with them, especially since they have a pretty high self-discharge rate, unless you were constantly using the card reader or the optical wand (or both). 5-volt button-cell 2 Duracell PX76A/675A. Discontinued models. , 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. (Clonix, NoV, 82120D, etc. by hpbrian » Mon Sep 23, 2013 4:54 am . Should your HP-41C require service, the calculator should be returned with the following items: 1. , in response to message #1 by Russ Henderson. 41C battery contact repair. 15 shipping. It seems like once the corrosion gets under the plastic coating on the flex PCB it keeps going. Find the perfect HP laptop battery for your device. The HP-67 was an excellent example of the problem. 8V NiMH 230mAH rechargeable battery packs. Posted by Stefan Vorkoetter on 2 Apr 2000, 9:20 p. Message Flag 50 x Not applicable. HP 41C/41CV/41CX 82153 WAND & MANUALS, FINANCIAL DECISIONS PAC & HP—18C TRAINING. 00 €-20% (09-23-2014 01:54 PM) ElectroDuende Wrote: (09-23-2014 01:10 PM) Eddie W. miller1987 (8057) 99. The BAT annunciator will also show in the display when this flag is set. The HP-41C represents both an evolution of capabilities and system architecture and a significant departure in technology and configuration. Refer to Batteries, appendix B, for battery replacement instructions. Full Version: 41C battery contact repair. It had three shift keys and most of its other keys had Page 1 HP-41 C repair guide A simple instruction to get a HP 41C working when battery contact strip is broken. Install fresh batteries. 7% positive; Seller's other items Seller's other items; Contact seller; US $45. Other possibilities: Buy n-size nicads from www. Are programs from the HP User's Library still available? Tragically, many years ago, the entire User's Library was dumped into the trash. Jones. 13. Please indicate price with shipping to Sweden. 6. The HP-41C series are programmable, expandable, continuous memory handheld RPN calculators made by Hewlett-Packard from 1979 to 1990. (01-10-2020 02:15 PM) Craig Bladow Wrote: (02-26-2019 12:04 PM) Artur - Brasil Wrote: I just have one doubt about my project: what will happen when battery discharge too much Best wishes! Artur, did you find out what happens when the battery is discharged to a low voltage? From looking a lithium polymer battery pack specifications on line, if they have Free download of a color scan of the English-language book 'HP-41CX Owner's Manual Volume 1: Basic Operation' by Hewlett-Packard, which is an owner's manual (user's guide, operating manual, owner handbook) for the HP-41CX calculator. Low Battery Flag 49 x Not applicable. All three calculators had leaking batteries and the liquid has oxidized the copper of the battery contact block. A recent repair of an HP-41C pac cost $12. Works perfectly. Upon opening it, it turned out that the battery contacts were corroded. 12 Month Replacement Warranty. (Refer to Batteries, page 240). Post: #7. Adhesive circuit for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. It replace the old 82120A Ni-Cd battery pack made by HP in the 1980's. The HP 82120A is a rechargeable battery pack for the HP-41 series calculators. Contacts on Keyboard PC Board. The BAT annunciator will also show in the display when this flag is set 50: Message Flag. 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. When allocated as program memory, each memory module adds 200-400 lines. Charger 82059A/B (82066B, 82068B 230VAC only) Output 8 V AC, 3 VA max. 12. Re: hp 41c battery pack rebuild with 1/3AA Message #7 Posted by Etienne Victoria on 28 Sept 2005, 12:46 p. Related Manuals for HP 41C. The best thing to do when BAT turns on is to put HP-41C batteries on your shopping list. Alphanumeric Full Performance Programmable Calculator. Please choose option! New price: cheaper circuit translating to 10% lower price! Battery-back Wanted: Battery pack for HP-41C/CV/CX. 2V, which is almost what you'll get from NiCads when they're fully charged. I gently cleaned all I could easily access and loaded new/fresh N batteries. Good luck in your pursuit of a suitable replacement for the 41C. My desk has a HP41CX, a HP48, and a HP11c close by, Cleared each time the HP-41C is turned on. Recently, my HP-42S broke down (the "9" key stopped working) and I found to my horror that there was no way to disassemble the calculator. Condition:--not 3000 maH NiMH Hewlett Packard Battery Pack HP 35, 45, 55, 65, 67, & 80 Charged (#324039833908) See all feedback. or any other part of the calculator except the battery slot. Hewlett Packard HP HP-82200A HP41C HP41CV HP41CX Calculator Keyboard Cover. Logic PCA Replaceable Parts. This video (part 2) covers accumulated pri The HP82182A Time module can be plugged into any HP-41 port. 2009 1:29 am . To do so, use a small, flat screwdriver and introduce it beneath the rubber, taking care of pulling also the adhesive sheet that glues the rubber to the calculator. Product data sheet. RE: Hurricane II: An HP-41C Battery Pack w/ USB Q1A in the schematics tracks the eneloop voltage and proportionally controls the output voltage by steering the voltage divider R5, R6: the lower the eneloop voltage gets, the higher the feedback voltage at HP 41C Batteries Message #1 Posted by Willis Wilson on 12 Nov 2004, 10:20 p. Re: N batteries for HP 41's Message #16 Posted by Dieter on 12 Jan 2012, 4:04 p. It has the following text on it: "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. VTG Hewlett-Packard HP 41C Calculator with Soft Case, Memory & Manual - Untested. Contacts at I/O Port. Designed to be folded in shape, it has an adhesive back with a 3M Very High Bond surface. C $49. The human interface was becoming an even greater barrier to adding more functionality. The battery holder has HP 41C CALCULATOR. Past 6 months. BTW, All about the HP-41C caclulators. Turn the calculator off. $62. 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. The calculator is in very good condition- cosmetically, that is. HP41 is the most sold HP scientific calculator. Is it possible to fix or is it permanently damaged from overload. Unfortunately, they began selling these items at about the same time HP stopped selling the 41C series. The HP 82143A is a thermal printer that was connected to a slot of the HP-41 series calculators. Post: #2. Wanted: Battery pack for HP-41C/CV/CX. The original model, HP-41C, was the first of its kind to offer alphanumeric display capabilities. Skip to content. This Alkaline battery is a replacement for HewlettPackard(HP) HP41CX Calculators. Getting a charger for this would be very easy, however refitting this into the existing battery holder may be the (07-08-2016 07:14 AM) isanchez Wrote: I have refurbished an HP41c battery pack with new batteries and what makes it more special is that it can be connected to any mobile phone charger or to a laptop through a micro USB connector implemented. HHC 2023 2 Diego Díaz for his great hardware creations. When clear, power is sufficient. 01234 Flag Status Annunciators Battery store installed too powerful a battery (somehow same size as N type so fit} in HP 41CV and it never worked again with N Type. Sponsored. I repaired two completely wor Find many great new & used options and get the best deals for HP 41C Scientific Calculator at the best online prices at eBay! Free shipping for many products! Skip to main content. Please look to the attached manual. Some HP-41C accessory prices that have been seen on eBay: Card reader : $25-60; Optical wand : $15-50; IL module : $5-50; Blank card set : $10-30; Battery HP 82109A, Chargers HP 82087A/B (HP 82089B, 82090A/B 220-240 VAC only) Do not use A models on continuous memory calculators HP-41C Handbook Fold Out: Contents: Introduction Getting Started Display Control Memory Stack HP-41C Functions Storing Recalling Functions Functions cont. Posted by Katie Wasserman on 4 Mar 2003, 5:55 p. When set, power is low. That worked for me once too. Very fast shipment. Please indicate price with shipping to HP 41C USB Power Adapter Available? (No Batteries) - Craig Bladow - 08-02-2023 10:41 PM I'm aware of a way to power a HP-41C from a module as documented in this old forum thread. Specifications: Rebuild YOUR 41C Rechargeable Battery Pack 82120A. 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. The HP-41C uses CMOS (complementary MOS) circuits throughout and has an alphanumeric Search internet for documentation of original HP-41C calculator and related modules and utilities. ENG displays numbers in engineering notation, with exponents of 10 shown in multiples of three Find many great new & used options and get the best deals for Hewlett-Packard Genuine HP 82120A Battery Pack for HP 41C/CV/CX Calculator at the best online prices at eBay! Free shipping for many products! Skip to main content. About $30 if you send your old 41c rechargeable battery pack to him. 3-volt CR2032 1 Duracell DL 2032. One or two units. I recharge them with an old Motorola pager that had been run over, but still had the charger and the cradle. HP-41C: Serial Number: 2340S40265, 1983 Singapore: Accessories: Pouch: Quad memory module 82170A, s/n 2215 installed (made in Singapore) Battery pack: Manual: HP82104A Card Reader Owner's Handbook, bound printout The Calculator Store. here's my take on it. Good luck. Hello, Hopefully someone can point me in the right direction. I have a HP-41C (square display edges, so "full nut"?). Since I do not find my original battery holder for my calculator I am not able to use my HP 41 C any more. The HP-41C can use either one HP82170A Quad Memory Module or up to four HP82106A Memory Modules. 04-06-2024, 11:59 PM . A completed Service Card, including a description If your HP-41C is damaged by battery leakage, you should first contact the battery manufacturer for warranty information. At the time, it was the first calculator that could use an external printer - in the line of endless expandability. Person said it was “fried” and gave a different model replacement. , in response to message #1 by Erik Wahlin. N, LR1 1 Apply Filters. $9. Programming Program Editing Prg Interruptions Prg with ALPHA Branch. URL of this page: HTML Link: (Battery) Low Power Annunciator. 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. Thank you. Battery Pack HP 41C/CV/CX Calculator Replace 82120A with Alkaline N-cells. I/O Flag 53 IIRC HP-41C includes a diode in the CPU board to prevent damage to circuits due to errors in battery polarity. My HP-41CX had badly corroded battery contacts because the last set of cells had been left in it for several years. Re: HP-41C battery contact fix Message #2 Posted by Katie on 3 Dec 2000, 1:28 a. I just discovered battery corrosion in my 41C. , in response to message #5 by Jon. miniCartComponent. Thanks to HHC 2023 3 The 82120D for HP-41 is a new Li-Po battery pack made by Diego Díaz. MemoryExtensions Caution: Turnthe HP-41C offprior to removingor insertingplug-inextensions. I'm aware of a way to power a HP-41C from a module as documented in this old forum thread. Batteries for a HP 41 CX Message #1 Posted by easy to find, and will last for many months of regular use. Delete from my manuals. , in response to message #1 by Dave Mabry. 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. 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". 72. Please indicate price with shipping to IIRC HP-41C includes a diode in the CPU board to prevent damage to circuits due to errors in battery polarity. remembering. 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. com - these are about $1. CPU speed is 24MHz when running on battery (due to limited battery current) and increases to 80MHz when the USB cable is connected. The HP-41C did not have a volume I or II owners manual, The main source for HP calculator users worldwide: new and used HP calculators, accessories and spare parts, and repairs. Shop by category. This HP scientific calculator comes with a 12-character high contrast alphanumeric LCD and a completely customizable keyboard. This HP business calculator uses reverse Polish 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. Skip to Content. (For port numbering, see the back of the calculator). 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. I am new to this forum, and I hope somebody can help me. Replacement Nicads for HP Battery Packs. This AC adapter is used for many HP calculators and peripherals, among them HP-41C / CV / CX with rechargeable battery, printer HP-82143A, printer HP-82162A, cassette tape HP-82161A, the TopCat family of calculators (HP-91, 92, 97), HP-71 and HP-75. I. If set, the display contains some message (not the Alpha or X register) 51: SST Flag. Shop HP® for high-quality laptop battery replacements. 02-26-2024, 05:06 PM . The calculator was in a drawer for 15+ years and would not turn on. from United States. This flag is used for ALPHA mode control. 6k. Availability: Ships within 1 business day Product #: E90BP. , in response to message #15 by Garth Wilson. Opens in a new window or tab. Battery Works at 800-707-7000; TNR Technical Inc at (800) 490-8418; Mille Et Une Piles at 34 rue Delambre, 75014 Paris, France; Hobby stores such as Tower Hobbies and Horizon Hobby often have extensive catalogs of batteries. 55. Buy Original HP Battery 82120A - Rechargeable battery pack - For 41C, 41CV, and 41CX calculators from EMPR, HP Certified Partner. Additional You may remember from section 1 that the HP-41C automatically turns itself off after 10 minutes of inactivity to conserve battery power. Buy It Now +C $33. Search there. Post: #1. 33m . Back to home page Return to top. Skip to main content HP 41C CALCULATOR (WITHOUT BATTERY COVER) + PAC MODULE , VINTAGE 1980. I've installed a known good battery pack from another 41 that I use, but the HP-41 mentioned above does not turn on. Only valid until December 3rd! Battery holder for HP-41C . ILS 25. 11-18-2016, 06:39 AM (This post was last Posts: 1 Joined: Nov 2016 HP 41C, 41CV, 41CX rebuilt rechargeable battery packs . battery holder for HP 41C - Christian - 02-16-2001. In the worst case, thin wires could be soldered directly to the batteries and power points if you don't use power hungry peripherals often. Our offices will be closed for the holidays from 3PM December 24th to January 1st, resuming normal operations on January 2nd, 2025. PRGM Mode Flag 52 x Cleared each time the HP-41C is turned on. 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 HP 41C Battery Contacts (Cleaning?) 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? Thanks in advance, Eddie 09-23-2014, 01:54 PM . 2. There are four screws underneath the feet that are held on with adhesive. 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. Because the HP-41C uses so little power, the normal battery life should be 9-12 months, depending on 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. ILS 234. Voltage. PLA. 50. Refer to Batteries in appendix B of the HP-41C Owner’s Handbook and Programming Guide. Item exactly as described. Top Rated Seller Top Rated Seller waterhosko (8,407) 99. As I have removed all the circuit stuff OK, but where is the charging circuit then? Connecting the batteries directly to the 5 V of an 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. This is the FLAT version, when the screw head domes are broken and grinded down - see pictures. ILS 18. More to explore : HP Vintage Calculators, HP Car GPS Units with Calculator, Vintage Calculators, N (09-23-2014 01:54 PM) ElectroDuende Wrote: (09-23-2014 01:10 PM) Eddie W. Overtightening the screws can strip the threads and lead to a malfunction. If the LOW BATTERY display appears while you are operating the calculator/card reader system, remove the card from the card reader and replace the batteries in the HP-41C with fresh size N alkaline batteries. Re: hp 41c battery pack replacement Message #3 Posted by donald wallace on 11 Oct 2005, 4:39 p. Add to my manuals. 10 shipping. The HP-41CV does not use any memory 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. The battery pack included with the instru­ ment should last from nine to twelve months, depending upon the freshness of the batteries installed, and on how much the calculator is used. Re: Replacement battery for HP-41C rechargeable pack Message #2 Posted by Ron Meek on 11 July 2002, 1:29 p. ) his support and patience. Alkaline 1 Filter Options for Voltage. 93. Woodstock Battery holder 3D. The earliest known HP-41C has a prefix of 1926 (1979 week 26), according to the HP Museum. eepyb fzkire rrbqs kumihdg qegynba otvc azwzpq lcir rprvgq iptid