Hacker In Harrison 🐗 on X: "I've got an old Hewlett-Packard HP-28S that needs a battery cover. I've replaced the calculator with a HP-35S but I'd like to get this old one
It's a Miracle! - The Amp Garage
Anyone have a photo of a broken HP28S battery cover? - Printable Version
Order the HP-28S Battery Compartment Lid – TeaWea
Battery Compartment Door for Hewlett Packard HP18C, HP28C, HP28S Calculator | eBay
National Museum of American History
HP 28S - A solution for battery and broken sliding door
HP-28S Battery Compartment Door – TeaWea – Calculators
HP-28S Battery Compartment Door – TeaWea – Calculators
NOS/NIP Hewlett-Packard HP-28C from 1987! : r/calculators
HP 28S Scientific Calculator for sale online | eBay
HP-28S Battery Compartment Door – TeaWea – Calculators
HP 28S - A solution for battery and broken sliding door
HP 28S - A solution for battery and broken sliding door
Champion Series
Hewlett Packard HP-28S Scientific Calculator with Owner & Reference Manual Works | eBay
HP 28S Scientific Calculator for sale online | eBay
HP-28S Battery Cover
The Concept | Details | Hackaday.io
HP-28S Battery Compartment Door – TeaWea – Calculators
HP 28S Scientific Calculator for sale online | eBay
HP-28S
HP 28S LiPo Battery | Hackaday.io
