Life span of an HP Calculator

[rprosperi]

(09-13-2024 06:14 PM)Alder Statesman Wrote:  I have my Dad’s HP-65 that he bought new when they were introduced. Works on A/C adapter like new including the card reader. That make thsi example one half of a century old.

My son has my HP 48GX I purchased when they came out in ‘93. Still runs like a tank after 31 years.

FYI - Running the card reader on A/C power only is specifically recommend against in the Owner's Handbook. Various theories have been proposed here (which some readers can follow while others can't, but no matter since they're only theories) but the important thing is to let you know you should probably stop doing that. A new battery is a small price to pay to keep an HP-65 that's still being used healthy and safe. Just a comment in case you didn't know.

See pages 87-88, which include this comment:

Quote:Since you cannot operate the card reader/writer without a
charged battery, even with the charger plugged in, the battery
should not be removed while running from the ac line.