Business

Sep 23 2017

DIY Alarm System Battery Replacement #how #do #home #alarm #systems #work, #alarm #system #battery


#

DIY Alarm System Battery Replacement

How to Test an Alarm System Battery

Open the alarm system panel box, and locate the battery. Most panels just have the battery sitting on the bottom of the “can”. If there is a date written on the battery, and it’s at least 5 years old, replace the battery.

If there’s no date written on it, continue with testing. Position the alarm system battery so that you have access to the terminals on the top. This usually means laying the battery on its side.

Disconnect AC power by unplugging the low voltage transformer, if possible. If you can’t easily reach the transformer (or if you don’t know where it is), you’ll need to disconnect one of its wires inside the panel.

The circuit board will have at least one row of screw terminals. At one end or the other, look for 2 screws marked “AC”, “Trans(former)”, or “XFMR”. Loosen one of these 2 screws, and pull the wire free. Be careful not to let the wire touch anything, or you could fry the transformer. By the way, don’t be concerned about electric shock, since the transformer only puts out around 18 volts.

Set your DMM to measure “DC Volts”, within the range of 12 volts. Touch a probe to each battery terminal, and check the voltage reading. You’ll notice the voltage dropping, hopefully not too rapidly. A good battery will drop steadily for a few minutes, then level off and even begin climbing slightly. If yours behaves this way, and stays above 12 volts, the battery is good.

If after 5 minutes or so the voltage continues to drop, or if it ever goes below 12 volts, the battery should be replaced.

How to Replace an Alarm System Battery

If the battery fails the test, reconnect transformer power so the system will run when you take out the battery.

Remove the connectors from the battery terminals. They are the quick-connect spade type, and simply pull-off and push-on. Take the unit to a battery store, where they will sell you a replacement battery of the same size.

Note that the new alarm system battery must have the same rated voltage as the old one. The amp-hour rating should be the same or higher.

Label the new battery with the date, for future reference. If you use a black Sharpie, it won’t show up well if the battery casing is also black. In that case, add a short piece of masking tape, and write on that.

Install the new alarm system battery, making very sure to match the positive and negative terminals to the correct wires: red to red, and black to black.

Using your multimeter, check the battery voltage. It should climb slowly but steadily, as the alarm panel’s charging circuit does its job. If the voltage doesn’t increase after 5 minutes or so, check the AC power connections again. If they are good, you may have a blown transformer.

Allow 24 hours or so for the replacement alarm battery to reach full charge. During this time, the keypad may still show a trouble light or low battery indication, but this will reset when the battery reaches a full charge.

To check the plug-in transformer, set your DMM to the “AC Volts” position, and touch a probe to each AC terminal on the circuit board. You should see 16-18 volts or so. If not, you’ll need a new transformer. These are available online, or you can get a comparable unit from Radio Shack or other electronics supplier.

Replacement is done by simply swapping out the old transformer for the new one. Unlike the battery, AC connections aren’t polarity-sensitive. There is no “positive” or “negative”, as the leads are interchangeable.

If You’re Looking For:


  • A new alarm system installed
  • Reactivate an existing system
  • Alarm equipment only, no monitoring


Why not get a few FREE alarm quotes from companies in your area?

No credit card info is needed, and you’re not obligated to buy anything!

An eBook by Jim Stauffer
Home Surveillance Pioneer and founder of
the Easy Home Surveillance System

How would you like the ability to check in on your house,wherever you are, from your cell phone or computer?

This book shows you how!

Here is just a small portion of what you will discover
in Easy Home Surveillance:

  • How to get started without having to buy any hardware!
  • Free software that will allow you to view your webcam from anywhere
  • Instructions on how to view your webcam from your cell phone!
  • A list of free and paid applications that make remote viewing even easier
  • How to have complete remote access to any computer

So How Much Does This Incredible Opportunity Cost?

This package is regularly priced at $49.99 but if you act now you can catch our introductory price of.

Just $29.99!

Ordering is fully secure (web encrypted for your security), easy, and safe. You also get Jim’s personal support. Ask him any questions by using the confidential contact form, or see our frequently asked questions.

All trademarks are the property of their respective owners.

This site is supported through affiliate marketing. A small commission is earned from purchases which funds site research & upkeep. Lee Russell is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com, amazonsupply.com, or myhabit.com.

Copyright © 2011-2017 Home-Security-Systems-Answers.com

Powered By
Solo Build It!


Written by admin


Leave a Reply

Your email address will not be published. Required fields are marked *