Since October, I've charged 3270 kWh into my 3 poweralls and used 2811 kWh. This is about 86% efficient. Is this what others are seeing? The fans have rarely been on as I haven't used high current loads yet (that's coming with AC this summer).
I suspect my efficiency will drop quite a bit this summer as the powerwalls will expend a lot more energy to stay cool.
I suspect my efficiency will drop quite a bit this summer as the powerwalls will expend a lot more energy to stay cool.