The 2GIG GoControl requires a special battery pack available for purchase from the manufacturer. 

Note: The standard backup battery that is included with all 2GIG Control Panels does not support UL 985 installations. To comply with the secondary supply requirement in UL 985: Household Fire Warning System Units, install the 2GIG Console Battery Pack (This is a high‐capacity 2600mAh Ni‐MH replacement battery pack).

To replace the battery in a 2GIG GoControl:

If desired, put the system in test mode with the monitoring station before proceeding.

1. Disarm the panel.
2. Power off the panel. 
   1. Unplug the AC adapter.
   2. Unscrew the top to remove the back cover.
      
      
       
   3. Disconnect the battery pack's connector, and remove the old battery.
      
      
       
3. Plug the new battery pack’s connector into the connector on the Control Panel’s circuit board.
4. Reinstall the back cover.
5. Restore AC power.
   
   Important: The Control Panel does not recognize that the battery is connected until AC power is connected to the power supply.