Designate the Powerwall 3 Leader

The Powerwall 3 connected to the Backup Gateway / Backup Switch / Gateway 3 over 12V/CAN wiring is designated as the Leader Powerwall 3. Before connecting to any Powerwall 3, note which unit is the Leader; any other units are Followers.

Connect to Each Powerwall 3 Unit and Update Software

1. Scan the QR code on the Leader Powerwall 3 unit in the Tesla One app to connect to the Leader Powerwall 3. See Launch Device Setup in Tesla One.
2. Select Networking from the landing page and connect to a reliable Wi-Fi network (if one has not already been configured). See Configure Internet Connection for instructions.
3. Select Software, then Check for Update and allow the system to download and install the update. See Update Powerwall 3 Software for instructions.
4. Wait for the unit to reboot after the update is complete.
   Note

   Do not perform any other commissioning steps.
5. Before proceeding, confirm on the landing page that the software version has updated. It is critical that the system be on the latest software version to ensure any Follower Powerwall 3 and/or Expansion units can be identified.

   

6. Repeat the above steps for each Follower Powerwall 3 units to update their software version to 24.20 or later.

Connect to Leader and "Scan for Devices" to Pair Followers and/or Expansion Units

1. Scan the QR code on the Leader Powerwall 3 unit in the Tesla One app to connect to the Leader Powerwall 3. See Launch Device Setup in Tesla One.
2. On the landing page, select Stop System.

   

3. If the system has Expansion units, plug in the DC harness to connect the Expansion units to the Leader Powerwall 3 unit.
4. Select System > Scan for Devices.

   

   Note

   Confirm all Follower units appear before proceeding. A green checkmark indicates the device has successfully paired. If the Follower unit does not appear, it has not successfully paired (see Troubleshooting: Follower unit does not appear on the Devices page after selecting Scan for Devices).
5. If the system has Expansion units:
   1. Confirm the Expansion units appear in the Devices tab.

      

      Note

      See Issue: A Powerwall 3 Expansion is not appearing when scanning for devices during Device Setup if the Expansion does not appear in the Devices tab.
   2. Confirm the Expansion serial numbers in the Tesla One app match those on the installed units (found on left side of unit).

      

   3. Select Update Expansions.
      Note

      It should take a few minutes to update each Expansion.

      

   4. Confirm the aggregate Battery State of Charge (SOC) for Powerwall 3 and Expansion units is healthy (>10%).
      • If the SOC is <10%, ensure Device Setup has been successfully completed. If Device Setup could not be completed, turn the Powerwall 3 switch OFF and leave the Powerwall 3 breaker closed to enable charging.
6. While connected to the Leader Powerwall 3, return to the landing page and select Start System.
7. Wait for all device firmware updates to complete (to view progress, select System then review the Devices tab).
8. If the system includes Expansion units, Balancing will automatically begin, with the system balancing (1) Expansion unit at a time. Within approximately one minute, Tesla One will display Balancing in Progress...
   Note

   Expansion units have an internal relay that is initially opened. To close the relay, the voltage of each Expansion unit must be the same as the other units. The balancing process charges OR discharges the Powerwall 3 to match voltages across the units.
   Note

   No installer action is necessary during balancing; as it may take from a few minutes to a few hours, it is not necessary to remain at the site until balancing is completed.

   

9. Confirm there are no alerts and both solar and battery are operating for all Powerwall 3 units.
10. Perform Backup Test to confirm the system is operating as expected. See Perform Backup Test for instructions.
    Note

    The Backup Test is required and can be performed during balancing.
11. Select Registration and register the system to the customer.
    Note

    This will register the Leader Powerwall 3 and any Follower(s) to the customer.