Using non-rechargeable batteries on old HP calculators

[Katie Wasserman]

(12-03-2014 02:35 PM)Dieter Wrote:  

(12-02-2014 04:42 PM)Katie Wasserman Wrote:  I did this to virtually all the rechargeable calculators in my collection (abut 200 of them).

Alkaline batteries have a slightly higher voltage than NiCds or NiMHs. So I wonder if there is a maximum battery voltage that is known to be safe with the good old Classics, Woodstocks and Spices.

Dieter

I use Energizer lithium cells in and they're up to 1.7 volts per call, so quite a lot higher than nicad's. I've never had a problem doing this with any HP calculator: classics, woodstocks, spicse, stings, etc.