Post Reply 
A current issue with batteries for my HP-35 and HP-67 calculators
05-28-2020, 02:42 AM
Post: #1
A current issue with batteries for my HP-35 and HP-67 calculators
Hi everyone,
I’d like some help concerning a current issue with batteries for my HP-35 and HP-67 calculators. I’ve been using battery packs marketed online by Mark Hoskins and been very pleased with their performance, but he has recommended me to this forum for tech help.

Some history, in case it’s important:

Both calculators use the same battery pack, so I bought one for each of them in August 2015 (usually good for at least 3 yrs, which has been found to be true). In case it matters, the 35 was bought new with its charger in 1974. The 67 was bought new with its charger in 1979 and was refurbished by HP when its card reader wore out. 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
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
A current issue with batteries for my HP-35 and HP-67 calculators - johnhaley - 05-28-2020 02:42 AM



User(s) browsing this thread: 1 Guest(s)