Smoke alarms, approx fitting costs
On 19/03/2018 08:52, Thomas Prufer wrote:
They are supposed to be installed with 10-year lithium batteries, ideally not
user-exchangeable so the alarms will be renewed after 10 years.
My experience with 10-year lithium batteries in smoke alarms is that
they don't last 10 years - more like 5.
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