Configuring Powerwall to maintain 100% stored energy for backup
Follow these steps in your Tesla app
Step 1:
From the home screen open the ‘Settings’ menu.
Step 2:
Select ‘Powerwall’ at the top of the screen.
Step 3:
You can adjust your backup reserve to 100% at the top of the screen. For Operational Mode, select ‘Self-Powered.’
Step 4:
If you have Powerwall 3 or Powerwall+, be sure that "Permission to Export" under "Advanced Options" is set to "Yes."