So, I bought a 41CV

[Dieter]

(01-20-2018 07:09 PM)BobVA Wrote:  - The HP-41 uses 1.5 volt "N" (LR1) cells. DO *NOT* INSTALL THE SIMILAR SIZED 12 volt BATTERIES THAT ARE USED IN CIGARETTE LIGHTERS / GARAGE DOOR OPENERS. Many an HP-41 has been lost to that sad mistake.

AND ALSO DO *NOT* INSTALL THE SIMILAR SIZED 6 V BATTERIES THAT ARE USED IN MANY CLASSIC CAMERAS!

(01-20-2018 07:09 PM)BobVA Wrote:  You'll have fun with it!

Definitely. ;-)

Dieter