Very nice aaa battery pack for Classic Calculators

[Dieter]

(06-03-2016 12:42 AM)Waterhosko Wrote:  I am still curious about the voltage issue. I have a friend who heard that alkalines will ruin the calculators. He does not know for sure this is true. I have measured voltages on charged battery packs over 4 volts.

Near the end of the charging process NiCds and NiMHs can and will reach voltages of 1,4 V per cell and more, in some cases even beyond 1,5 V. That's close to the output of a new Alkaline battery.

(06-03-2016 12:42 AM)Waterhosko Wrote:  So I'm not at all convinced that alkalines will hurt the calculators.
Does anyone know for sure?

Noone can say this for sure unless the electronic specification of the particular calculator is known. But this topic has been discussed here several times over the years. I only remember posts that say Alkalines are fine. After all, if a new Alkaline has 1,55 V and a fully charged NiMH 1,45 V, that's merely 7% difference. But again, I do not think there can be a definitive answer, unless...

Dieter