If you hear the beeping or chirping low-battery alarm, do not ignore it, and do not ever remove the battery without replacing it with a new one. Smoke detectors with fully-functional batteries are critical to the safety of your family and home.
Before replacing the batteries turn off the power to your smoke alarms at the circuit breaker/fuse box.
Most smoke detectors twist open, but some models have a plastic lock you open with a screwdriver, while others need to be popped open using your fingers. Once you remove the cover of the detector, it's easy to see how to change a smoke alarm battery. Simply remove the old battery and install the new one. Make sure the negative and positive connections match the labels in the smoke detector.
Before you finish re-installing the smoke detector, make sure its new battery or batteries work. Locate the test button and press it for a few seconds to engage the test. If your test alarm doesn’t sound, check battery connections and try different batteries.
If your smoke alarm fails the test with new batteries, then you need to call us on 0300 373 3000.