how to check smoke alarm battery

How to Test Smoke Detector Batteries. 1. Press and hold the test button on your smoke detector until the alarm sounds. This indicates a good battery. 2. Remove the battery from the battery compartment if your smoke detector uses the battery only as a . Press and hold the test button on the smoke detector. It can take a few seconds to begin, but a loud, ear-piercing siren should emanate from the smoke detector while the button is pressed. If the sound is weak or nonexistent, replace your batteries.

Learn how to test, clean, and maintain your Smoke and CO alarms. Testing with the "Test" button helps ensure that your alarms have a reliable power source. The test button is usually found on the side or top of your unit. What the Test Sequence Sounds Like: The test sequence varies by model, but it will usually be a loud alarm sound followed by a warning. Here's an example of a test sequence on a smoke and CO alarm with voice alerts.

In ionization smoke alarms, the test button puts an electric load on the sensing chamber, causing the alarm to react as though there was smoke present. This also tests the battery and the rest of how to check smoke alarm battery circuitry and wlarm an accurate method for testing the sensing chamber. In photoelectric smoke alarms, the test button causes a reflective material to go checj front of the light-emitting diode LEDcausing light to scatter throughout the sensing chamber like the way smoke particles would.

This tests the unit completely, not just the battery. In carbon monoxide alarms, the test button hdmi cable how to use you ensure that the unit is receiving power from battery or hardwired sources. Never test your First Alert alarm with real smoke, flames, or exhaust. Clean your alarms at least once a month. This ensures that smoke or CO can reach the alarm's sensing chamber. A can of clean compressed air sold at office supply stores may also be used.

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Expand search. Search Search. Information Title Provide a short description of the article. The title appears in the article and in search results. How to Test, Clean, and Maintain Alarms. URL Name. Our alarms are designed to be as maintenance-free as possible. There are a few things you can do to make sure the alarms work how to check smoke alarm battery best for a long time. Testing How to check smoke alarm battery Alarms Testing with the "Test" button helps ensure that your alarms have a reliable power source.

Testing with a UL-certified liquid smoke detector tester also known as "canned smoke" is acceptable. Number how to check smoke alarm battery Views Number of Views 4. First Alert Home. First Alert How to create javascript function in asp.net. Privacy Statement.

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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 Total Time: 2 hrs. This video will show how to test this smoke detector battery. Smoke detectors are essential for the safety of you and your loved ones. Smoke detectors save. You’ll likely notice a high-pitched chirping noise coming from your smoke alarm if the batteries need to be changed. It is best to be proactive and change the batteries in your smoke alarms before that noise occurs. When you change the batteries in one alarm, make sure you change the batteries in the rest of the alarms in your home as well. A helpful reminder to check your smoke alarms and change the batteries .

Last Updated: August 21, References. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness.

There are 14 references cited in this article, which can be found at the bottom of the page. This article has been viewed , times. House fires are a serious danger.

Many fatalities occur during fires at night, in homes that either don't have a smoke detector or have a non-functional one installed. Maintaining your smoke detectors properly can cut the chances of dying in a house fire significantly. Learn more about how to maintain your smoke detectors to protect your life and property. To change the batteries in your non-wired smoke detector, start by removing the detector from its mounting on the ceiling either by twisting or sliding it out.

Then, open the covering to access the battery inside. Make sure you check to see which type of battery your detector needs, since it will fail if you replace the existing battery with the wrong kind. When you install the new battery, make sure the negative and positive terminals match up with the markings on the detector before closing the cover. For tips on how to change a battery in a wire smoke detector, keep reading! Did this summary help you? Yes No. Random Article. Home Random Terms of Use.

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Part 1 of Check the battery type. Installing the new batteries incorrectly, or using the wrong type, will cause your smoke detector to not function. Always make sure you are using the correct type of battery and installing the batteries correctly to ensure the detector will work. Detectors that use lithium batteries will last for ten years. You generally cannot replace the battery, instead, replace the entire detector after its ten year life span is expired. Many detectors will make use of a 9v battery.

However, some may require different types of batteries. Use high quality, long lasting batteries. Using rechargeable or low quality batteries may cause your smoke detectors to fail. Remove the smoke detector. You will have to take your smoke detector down from its mounting on the ceiling. If your detector is hard-wired into your house's power system, you should turn the power off at the fuse box first. The method you use to remove your smoke detector from its mounting will vary depending on which model it is.

Most smoke detectors are removed by twisting or sliding the detector away from the mounting. Some detectors will not require you remove the entire detector. These models require that you remove only the section that covers the internal components and battery.

Not all hard-wired smoke detectors will have a backup battery. Open the battery compartment and install the new battery. To access the battery, you will have to remove the cover that contains it.

Exactly where the battery is located, and how it is secured, will vary from model to model. Generally, once you remove the cover of the detector, you will be able to see where the battery is located without trouble. The location of this cover will vary from model to model, and some may be secured with a screw or other fastening.

Most coverings will slide off and away from the smoke detector's body. Once open, you can remove the old battery or batteries. Make sure you install the new batteries correctly. Check that the negative and positive connections are matching the labels on the smoke detector Close the battery cover. Check your manual for the smoke detector if you are having trouble locating or removing the battery. If you don't have the physical copy of the manual, you may be able to find it online, at the manufacturers website.

Test the batteries. Before you reinstall the smoke detector, you will want to make sure that the batteries are working properly. Locate and utilize the button on your smoke detector that will test the batteries. The location of the test button will vary. Most test buttons require you to press the button for a few seconds to engage the test. If successful, the alarm will sound. Double check if the test fails. If the alarm doesn't sound during the test of the batteries, you will need to recheck them.

Never reinstall your smoke detector until it passes this battery test and has demonstrated that it is functioning properly. Make sure the positive and negative terminals are matching the correct terminals in the smoke detector. If the batteries are installed correctly, and the test failed, replace the batteries and try again with new ones.

If no new batteries are working, your detector may need replacing. You may want to contact the manufacturer, as they may replace the detector if it is under warranty. Some alarms have an LED-light that will indicate if the alarm is working properly. Generally a green light indicates that the alarm is working properly, a red light indicates an issue.

Review your smoke detector's instruction manual. If you still have the manual, review the information to help you better understand your model of smoke detector and to properly maintain its functionality. Finding where the battery is located, and how to access it, can vary from model to model. The manual may also indicate which type of battery is required by your smoke detector.

Don't throw the manual away. Keep it in a place that you can store it safely and still access it when needed. Part 2 of Turn off power to your wired smoke detector. Wired smoke detectors are connected directly into the power supply of your house, which is sometimes also called the mains. To cut power to your wired smoke detector, you'll have to press the circuit breaker in your home circuit box.

However, if you do not have a labeled breaker and cannot determine which circuit your detector is on, you can press the main breaker to cut all power to your house, including the smoke alarm. Wired smoke detectors frequently have a small green light that indicates it is receiving power from the mains.

When this light turns off, you know the power to the alarm circuit has been cut. Cutting the power to your wired smoke alarm might seem excessive, but this extra precaution will prevent accidental shocks. This can be especially important when dealing with old or excessively dirty smoke detectors. Remove the cover of your smoke detector.

Depending on the kind of smoke detector in your home, there are many different ways you might have to remove the cover for your detector. These covers are relatively simple, so through trial and error you should be able to get the cover off in less than a few minutes, though a manual might speed this process.

Some common covers include: Push-lock covers. These covers usually have a small, plastic lock that can only be opened by pushing on a specific point indicated on your fire alarm. Look for an arrow indicating the point you need to push, and use a thin screwdriver or pen to release the push-lock. Twist-lock covers. To unfasten these you'll have to twist the cover usually counterclockwise , or in some cases, push upwards and twist.

Hold the alarm as you remove this kind of cover. Once the lock is undone, the cover will fall downwards. Friction-lock covers. These covers are held in place by the friction of a plastic locking mechanism on the inside of your detector.

These can often be popped loose by prying the cover free with your fingers using firm, moderate-light pressure.

Replace the battery. Generally, most smoke detectors use a 9-volt battery for power, though you should always follow the directions that came in your smoke detector manual. Be sure the battery is new so that it lasts the full ten-year life expectancy of most home smoke detectors.

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