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. Shipping included in price for EU customers. Please choose option!

New price: cheaper circuit translating to 10% lower price!

Two long screw for the lower screw posts of HP41c calculators

Two long screw for the lower screw posts of HP41c calculators + two long screws for upper posts.

Two long screw for the lower screw posts of HP41c calculators - black

Set of 8 pairs of spacers for nut-screwed full-nut HP41c calculators. Substitutes the nuts that are screwed on the lower posts to secure the circuit, 

HP41CL with the latest version of Systemyde circuit

HP41c perfectly working, with all port covers and battery holder in HP 3D printing process. The battery holder has new stainless steel springs and battery retention wings. 

It has a couple of small nick in the lower part of the body (see pictures) and the USER key feels soft (but registers 100%)

The HP-41C series are programmable, expandable, continuous memory handheld RPN calculators made by Hewlett-Packard from 1979 to 1990. The original model, HP-41C, was the first of its kind to offer alphanumeric display capabilities. Later came the HP-41CV, with 4 times the memory space.

This is a very good sample, perfectly working, with a small crack in the screen (see pictures) and name written in original battery box. Comes with all port covers (the side cover is The Calculator Store's 3D printed part). Comes with no case

HP41c perfectly working, with all port covers and battery holder in HP 3D printing process. The battery holder has new stainless steel springs and battery retention wings. 

The screen has a small glass indent in the top right corner, as seen in the pictures, not affecting readability or performance.

HP41c Tall Keys, perfectly working, with all port covers and no traces of rusting. Back and side ports and case are originals and included

Set of pieces needed to repair successfully the lower posts of HP41C, 41CV and 41CX full nut calculators, including zebra connectors, lower post part, and keyboard support for clothes' pegs to protect the keyboard

This piece is for repair of HP41c full nut calculator, substituting the damaged or corroded zebra connector that links the main board with the processor circuit. Pair

Battery holder case for the HP41 family of calculators, made with 3D printing and springs in stainless steel 304 alloy

HP41c back port cover - 3D, new - set of 4.

Stainless steel 304 springs for HP41C battery holder

HP41c back port cover - original and used.

Zebra Holder to keep the elastomeric zebra connectors in the contacts between main board and processor circuit in the HP41c calculator family, full nut versions.

1 Piece for repairing HP41c back cases.

This piece is for repair of HP41c back halves, specifically the support of the upper screw heads that is often damaged, and very difficult to repair in a lasting way.

HP41c side cover.

Adhesive circuit for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Shipping included in price.

Repaired back side of HP41c. It can be used in case the original backside has the screw supports broken.

4 pieces for repairing HP41c back cases.

This piece is for repair of HP41c back halves, specifically the support of the upper screw heads that is often damaged, and very difficult to repair in a lasting way.

The HP 82143A is a thermal printer that was connected to a slot of the HP-41 series calculators. This printer was introduced with the first hp 41c. At the time, it was the first calculator that could use an external printer - in the line of endless expandability.

This unit works flawlessly and comes with a nearly complete paper roll and a new one.

HP Original charger in excellent shape, valid for HP41c, HP67, HP92, HP97, and printers HP82162A (HP-IL) and HP82143A

Thermal Paper for HP calculator printers: (HP 82240a & b, HP-92 & HP-97, 82143a & HP-IL printer) single roll

Extended Memory for HP41c, HP41cv and HP41cx calculators 

Battery holder case for the HP41 family of calculators

Memory for HP41c calculators (64 registers)