HP-41 Articles

HP-41 Battery Shield

HP-41 Battery Shield

Mar 26, 2021

This battery shield is designed to fit the battery location on a HP-41 calculator and protects somewhat the calculator in the event the batteries leak. The shield can only be used with alkaline batteries, it can not be used together with the 82120A rechargeable battery.

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AC Adapter HP-82059B

AC Adapter HP-82059B

Mar 20, 2021

Fully tested AC adapter HP-82059B. 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.

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HP-41 Card Reader

HP-41 Card Reader

Feb 28, 2021

The HP-41 family card reader (HP82104A) is a very useful accessory for storing and retrieving programs and data. The card reader presented here is in excellent condition, in original box with its manual. The device is recognized by the calculator as seen in the images. It comes with a number of used cards which will be very useful when testing it.

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HP-41 Blanknut

HP-41 Blanknut

Feb 11, 2021

The HP-41 Blanknut version is a variant of the HP-41CV made by HP for customers who needed to sell the calculator bundled with their own software.

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