In my part of Los Angeles there was a 2 hour outage yesterday due to a big rain storm. No problems with the Powerwalls kicking in. I got a notification that they were delivering power and were at 100% charge. 2 hours later the power returned, my 4 Powerwalls were shown at 54% capacity.
Assuming 13.5 usable kWh per Powerwall, that should mean about 25 kWh was discharged: 4 times 13.5 times 46%.
But the Tesla app shows that the Powerwalls only delivered 14 kWh during the outage. I could eyeball this by looking at the graph showing about 7 kW home usage during the 2 hour blackout, and I confirmed it by downloading the stats which Tesla provides for every 5 minutes.
Disappointing, implies Powerwalls would have fully drained in 4 hours and nowhere near the 54 kWh total capacity I expected.
I called into Tesla Powerwall support to ask why nearly half the lost charge was not delivered. They are researching.
Anyone else had this experience?
Assuming 13.5 usable kWh per Powerwall, that should mean about 25 kWh was discharged: 4 times 13.5 times 46%.
But the Tesla app shows that the Powerwalls only delivered 14 kWh during the outage. I could eyeball this by looking at the graph showing about 7 kW home usage during the 2 hour blackout, and I confirmed it by downloading the stats which Tesla provides for every 5 minutes.
Disappointing, implies Powerwalls would have fully drained in 4 hours and nowhere near the 54 kWh total capacity I expected.
I called into Tesla Powerwall support to ask why nearly half the lost charge was not delivered. They are researching.
Anyone else had this experience?