HP-41 rechargable battery

[Massimo Gnerucci]

(09-11-2017 05:36 PM)HP-Collection Wrote:  Did you realize that there are two different battery packs for the HP-41? One has 2 charging pins, the other has 3 pins. Both are coded HP82120A.
I'm currious as the charger for this unit has only 2 pins... the middle pin of the 3 pin version is absolutly "useless".

Matthias

Of course we know, Matthias.

My first one was a 3-pins design.