Yes you are correct.
I use between 50 and 80 kw a week. I pay 8 pence per kw between 12 and 7. I charge up when low and it works out about every 4 to 6 days and around 40kw.
my electric bill is now about a third less on our ev tariff. And we use double. Last month we used 340 kw at 8pence.
