Smoke alarms

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sanity clause
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Smoke alarms

Post by sanity clause » Fri Oct 09, 2020 11:04 am

When smoke alarm batteries start to get low, why is it always around 3:00am when they start beeping? :evil:

expressman33
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Re: Smoke alarms

Post by expressman33 » Fri Oct 09, 2020 2:06 pm

Because the temperature drops at night - Cold temperature increases the internal resistance and lowers the capacity.
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AAAlphaThunder
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Re: Smoke alarms

Post by AAAlphaThunder » Fri Oct 09, 2020 6:17 pm

expressman33 wrote:
Fri Oct 09, 2020 2:06 pm
Because the temperature drops at night - Cold temperature increases the internal resistance and lowers the capacity.
WOW, that's really clever. I thought it was "just cause they do" but you have a scientific theory for it.
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