The indoor part of the inside/outside thermometer has again had problems with the Nickel-Zinc batteries. Once again I noticed it because the illumination was weak. And once again the voltage of one of the batteries had dropped to just over 1.0 V. Looking at my records, I see it was the same one I had problems with last time. Here part of my records:
|5||15 October 2012||1.765||1.896|
|10||15 October 2012||1.007||1.848|
|5||23 October 2012||1.798||1.867|
|10||23 October 2012||1.024||1.797|
So clearly there's something wrong with battery 10. More importantly, batteries of differing quality really don't mix. I wonder what I can do with a single flaky battery, apart from throw it out. I think it would work OK without being in series with a more powerful one.