I shouldn't be surprised but here I am, surprised. I've had my 3 powerwall 2 units up and running for 5 days. I finally got around to writing some scripts to query the backup gateway APIs and log the state of charge, load, solar, and grid power figures periodically and noticed a couple things that I'm not thrilled about and curious if others have seen.
1. My powerwalls are using ~ 7 watts of power continuously from the grid when in backup mode. This is no biggie until you see #2
2. My powerwalls are losing about 0.1% of charge every hour or 336Wh per powerwall every 24hrs. So my 3 powerwalls consume 1kWh per day sitting around doing nada.
Wtf are they doing with 1kWh/day? The powerwalls are in a temperature controlled area that is a steady 64 F. Can't get more ideal than that at idle. When you combine the 10% round trip efficiency loss on the inverter plus this, you are loosing a nice chunk of power.
I'm going to try shutting off the powerwalls and see what their state of charge is after a full day. I can't imagine their electronics are actually using that much power. That more power than running a mackbook all day watching YouTube (25watt/hr)
Anyone else tracking their idle drain?
1. My powerwalls are using ~ 7 watts of power continuously from the grid when in backup mode. This is no biggie until you see #2
2. My powerwalls are losing about 0.1% of charge every hour or 336Wh per powerwall every 24hrs. So my 3 powerwalls consume 1kWh per day sitting around doing nada.
Wtf are they doing with 1kWh/day? The powerwalls are in a temperature controlled area that is a steady 64 F. Can't get more ideal than that at idle. When you combine the 10% round trip efficiency loss on the inverter plus this, you are loosing a nice chunk of power.
I'm going to try shutting off the powerwalls and see what their state of charge is after a full day. I can't imagine their electronics are actually using that much power. That more power than running a mackbook all day watching YouTube (25watt/hr)
Anyone else tracking their idle drain?