Q:

How do you change the batteries in a smoke detector?

A:

Quick Answer

To change batteries in a smoke detector, remove the plating, take out the old battery, and place a new battery in the compartment. Most smoke detector batteries accept 9-volt batteries.

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Full Answer

  1. Remove the cover

    Detach the plate of the smoke detector by twisting it.

  2. Remove the old battery

    Remove the old battery from the compartment.

  3. Install the new battery

    Place the new battery in the compartment, and ensure that the plus and negative terminals are properly aligned. Place the cover on the unit.

  4. Test the detector

    Make sure the detector is working by pressing the button on the unit to hear a beeping sound.

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