Quote:
Originally Posted by Rainger99
That explains why my detector started chirping (low battery) within the first year!
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My new house batteries lasted 4 years. I don't know what is meant by "bulk batteries", but every First Alert detector comes with a new battery preinstalled in the detector. You pull out a plastic tab to activate the battery. And, the device is designed to chirp when the battery level is low, so you know when to replace it.