|>> > Also, read somewhere that a Duracell Ultra PP3 will last 4 years in a |>> > smoke alarm, and might be cheapest in the long run. Opinions ? |>> >
|>> I have 3 smoke alarms bought from Screwfix. I use good alkaline batteries |>> (not Duracell), and find that they last little more than 1 year. If |>> Duracell's "blurb" is genuine, their batteries still won't last more than |>> 18 |>> months. |>> Perhaps other smoke alarms are more economical? |>
|> I don't want my smoke alarm to be economical as much as I want it to |> work! Duracell ProCells are about a pound each, and I change them once a |> year; old tip, change them on your birthday and then you can be fairly |> sure it's done. | |Use more than one smoke alarm and change them at different times of the |year. |You don't want them all going flat at the same time.
They have an irritating beep when the battery is nearly flat. Also I check mine every time the local BBC news says "if this house had been fitted with smoke alarms ??? people would not have died. I also have a stock of at least one PP9 battery.