On January 14, 2021 at 04:56 jra@baylink.com (Jay R. Ashworth) wrote:
Well, it probably gets way worse: if it's a "permanent" battery, it will be harder to find, and harder to replace...
No, you don't replace the permanent batteries in these 10 year smoke detectors, you toss the whole smoke detector and buy a new one. Heroic efforts aside. So you don't need to find the right battery. FWIW many smoke detectors bought in the past 10-15 years (I dunno but something like that) even with typical replaceable batteries have some sort of timer in them so when they hit 10 years they begin beeping in a slightly different pattern (like two short beeps every 60 seconds) and replacing the battery doesn't help. It just begins doing that on the fresh battery until you figure out that you need to toss the detector and buy a new one. Ran into that, looked it up on their web site as I was confused why a new battery wasn't helping and they confirmed that means the detector has expired buy a new one. I assume these 10 year sealed smoke detectors somehow came out of that.
----- Original Message -----
From: "William Herrin" <bill@herrin.us> To: "jra" <jra@baylink.com> Cc: bzs@theworld.com, nanog@nanog.org Sent: Wednesday, January 13, 2021 11:52:47 PM Subject: Re: End-user Alert Delivery (was Re: NDAA passed: Internet and Online Streaming Services Emergency Alert Study)
On Wed, Jan 13, 2021 at 7:58 PM Jay R. Ashworth <jra@baylink.com> wrote:
Last time I looked, consumer residential smoke detectors were still running off 9V alkaline batteries, which are expected to run the device for 6 months of 1/99 duty cycle (or less, probably *way* less).
Ordinary ionization-based smoke detectors use a 10-year lithium battery, which is about the same lifespan as the americium-based detector circuit as it begins to decay into neptunium.
You may now resume your argument over how much battery drain is too much.
Regards, Bill Herrin
-- Hire me! https://bill.herrin.us/resume/
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