Tesla Powerwall › internal inverter and control board
Powerwall idle standby loss roughly doubles after update
reported more than once
Symptoms
Two idle Powerwalls in mild weather lose about 5% of charge per day with zero delivery to the home in the five-minute data, working out to a continuous internal draw around 60W per unit, about double the loss seen before a specific firmware version
The cause and the fix
Subscribers see the cause, the fixes that worked and who did them, part numbers and recent prices when a part is involved, and the field reports behind this entry.