First Alert’s BRK brand smoke detectors, manufactured prior to October 2000, are not compatible with Duracell batteries, according to WKMG Local 6 News out of Orlando, Fla. The two models identified are First Alert’s BRK brand 4120B and 4120SB. The only batteries that will work safely with these models are the Eveready or Energizer 9V batteries.
Local 6 Problem Solvers reporter Mike Holfeld says, “In fact, the wrong battery will expand, burst or explode.”
Orlando resident Dave Grewe says to look for scoring or smoke on the outside of the detector.
The Local 6 report urges homeowners, installers and fire officials to be aware of this problem for the sake of safety. This is important because fire alarms are credited with reducing home fire deaths by 50 percent.
