Calculator collection : How to power calcs without constantly opening?

[Eric Rechlin]

(11-29-2021 09:45 PM)John Keith Wrote:  Lithium AA and AAA cells do have a higher voltage than alkaline cells, about 1.7V no load. Probably not a big deal but I've always been hesitant about using them with older electronics.

I measure the lithiums at 1.65 V and fresh alkalines at 1.59 V so there isn't much of a difference. But yes, if something is particularly sensitive it is worth noting the slight increase in voltage.