2GIG GC3 - Replace the Backup Battery

Before we get started, it's important you know about two critical components of your alarm system.

We advise giving the battery 24 hours to fully recharge. 


  • This is a large plug located in an electrical outlet. It is often secured with a screw to keep it from falling out. 
  • This plug is the main source of power for your alarm system.
  • As long as there is power in your home, your system should always have power.
  • If the transformer stops supplying power, then the system will be kept running by the system’s backup battery.

Backup Battery

  • The backup battery will keep the system running for a period of time in the event of a power outage.
  • This time depends on the age of the battery and the number of devices it has to support during the outage. 
  • The location of the battery depends on the system type.
  • These backup batteries are rechargeable.  Once power is restored, the battery will recharge on its own. 

1. Remove the bottom screw and pull front from the back-plate


2. Hang front on back-plate with plastic strap then unplug and remove old battery


3. Replacement batteries can be found online GC3 Battery from All2gig.com


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