A current issue with batteries for my HP-35 and HP-67 calculators

[teenix]

(05-28-2020 02:42 AM)johnhaley Wrote:  It’s been my experience that the 35 will function without the battery installed when used on the charger, but the 67 MUST have the battery installed even when using the charger

Thanks

Not sure if this is just experience or a question.

Page 312 of the HP67 user manual...

CAUTION
Operating the HP-67 from the ac line with the battery pack removed may result in damage to your calculator.

cheers

Tony