Strange: Different timekeeping behaviour of 2 WP34S calculators

[rkf]

(05-22-2019 05:34 PM)burkhard Wrote:  ...
My WP34S is likewise reporting 2.7V on BATT as well, but as I key something in, I can see the "low battery" light flashing on... It still has correct time and date (I also have a crystal), but maybe trouble soon?

What does BATT report on the "good" calculator?
Why not try swapping the batteries between them?

The "good one" reports 2.8V, that's not really much more. I'll give a try to the suggestion of swapping batteries.