How to Change the Battery in Home Alarm System


A home security system is one of the best ways to protect your family and property. The system is only as good as the batteries in the monitor box are. Batteries should be changed at least twice a year and more often if needed. You may have heard that when the time changes each year in April and November, it's a good time to change out batteries in smoke alarms and security systems. All systems are different but most give you access to the battery compartment, so that you can change them when needed.

Things You'll Need

  • Screwdriver (either flat- or Phillips-head)
  • Fresh batteries in the correct size
  • Locate the battery compartment on your home security system. Most of the time it is located under the keypad cover.

  • Use a flat-head screwdriver to gently pry off any covers over the battery compartment, if necessary.

  • Determine which size of batteries your system uses by looking at the old batteries in the compartment, or by checking the instruction manual that came with the system. Also notice the position the batteries are in. Get the size of battery you need.

  • Check to see if the old batteries have leaked into the battery compartment. Use caution when removing them and cleaning the compartment.

  • Once the old batteries have been removed, immediately discard them so that you won’t mistakenly put them back in the compartment.

  • Install the new batteries, making sure you put them in properly.

  • Run the battery check test, following the instructions in the manual for the system.

Tips & Warnings

  • Most battery compartment covers can merely be lifted off without using a screwdriver. If you must use a screwdriver, be careful.
  • To clean up after a leaked battery, mix about 1 teaspoon baking soda in a pint of water. Wet a clean rag or sponge, wring it out until it is just damp, and wipe the compartment clean. Dry it with a clean rag, and replace the batteries.
  • Throw away anything you used to remove batteries that have leaked. Battery acid is highly corrosive and can be fatal if accidentally swallowed. It can also cause severe burns if it comes in contact with skin or mucous membranes.
  • If there is evidence that the old batteries have leaked, leave them in the compartment until you can either put on rubber gloves or find something (a pair of pliers, old kitchen tongs, hemostats or something else that the batteries can be grasped with) that you can use to remove the batteries.
  • Dispose of old batteries properly, even if they have not leaked. If your area requires that even small household batteries be carried to a disposal place or disposed of in a particular way, or recycled, follow the disposal/recycling directions.

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