How to Reset ADT Panel After Replacing the Battery

Quck answer

To reset your ADT panel after a battery replacement, follow these steps:

1. Disconnect the power supply by unplugging the panel from the wall outlet.

2. Remove the old battery from the panel.

3. Insert the new battery into the panel, making sure it is properly connected.

4. Reconnect the power supply by plugging the panel back into the wall outlet.

5. Wait for the panel to power up and initialize, which may take a few minutes.

6. Once the panel is powered up, enter your security code to reset and reconfigure the system.

By following these steps, you will successfully reset your ADT panel after a battery replacement.


If you need to reset your ADT alarm panel after changing the battery, it is assumed that you have already successfully replaced the battery. It is normal to still see the message “low batt” or “bat” for up to 48 hours as the battery charges. This is not a problem and will resolve itself, with all settings remaining the same as before the new battery was installed. However, if you still want to reset the system, it can be easily done.

First, Check if Test Mode is Over

If you followed the recommended instructions from ADT for battery replacement, you should have put the system in test mode through the MyADT.com website (specifically the “my alarm” section). After changing the battery, you should have logged on to the website again and selected “stop test” from the “system management” option under “my alarm.”

If you did not engage test mode at all or are unable to disengage it for some reason, there may have been an issue during the battery replacement. In this case, call 800-ADT-ASAP for assistance with test mode. You may still see the low battery indicator for the 48-hour period it takes for the 12-volt battery to fully charge.

Before Resetting the System

ADT does not manufacture their own alarm systems; they rebrand products from other manufacturers and offer various models, such as the ADT Chime. This means that there is no one-size-fits-all solution for resetting systems; it depends on the specific make and model you have. One reliable option is to contact ADT directly for assistance when making changes to the system. They may recommend having an ADT technician perform a factory reset.

Prior to attempting any reset codes, ensure that you have your phone nearby and are prepared to receive a potential call from the ADT team if any issues arise. You will need to explain your actions and provide your code in case they suspect unauthorized access.

Retrieve or download the user manual for your panel. Look for instructions on how to reset the system after a power outage, as the process is the same. You will need your reset code, as you cannot proceed without it, and you may require a technician’s assistance if you do not know it.

Resetting the System

If your system is beeping or not arming correctly, a reset may help resolve the issue. Since ADT rebrands various makes and models of monitoring systems, this is a common solution, although it may not work universally.

Typically, resetting the system involves entering the reset code and then pressing “off,” “disarm,” or “1” depending on your specific system. The system should reboot after this. To ensure it is functioning properly, arm and disarm the system by entering your security code to arm it and then immediately disarm it with the same code once it activates.

If you make a mistake with the code at any point, press “#” and carefully reenter it. Ideally, you will resolve the issue before the security center contacts you. If replacing the battery and resetting the system does not resolve the problem, your next step is troubleshooting or contacting ADT’s customer service.

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