28 Battery door needed

[Matt Agajanian]

(10-25-2022 11:31 AM)Steve Simpkin Wrote:  Also as a general public service announcement. When buying "N" size batteries (aka E90) be sure not to accidentally purchase 12 Volt "A23" batteries instead. At a casual glance they look almost the same size but they will instantly kill a HP-41C or HP Clamshell calculator.

There should be a special place in "you know where" for the people that decided it would be a good idea to make the 12 Volt A23 battery almost the same size as the existing 1.5 Volt "N" battery.

I know that all too well.

I wrote a message about that in an earlier post.