HP-97 on charger only

[aurelio]

(03-18-2020 11:31 AM)teenix Wrote:  

(03-18-2020 08:02 AM)Moggul Wrote:  Mine did not like it at all.

When I got my HP-97 the battery did not hold any charge so when connected to the charger the calculator would disply just gibberish. Afeter I installed a fresh battery pack the calculator operated normally again.

It seems the battery plays a part even down to basic calculator operation, but probably not damaging like the Woodstocks. I would imagine it behaves as a large capacitor, when charging is taking place, to smooth out the raw rectified AC.

I met years ago a 97 which was equipped with capacitors in place of the battery pack, it works regularly if connected to the main.....

Edit. I found the capacitor pack I was talking about....