Lovely, thats the future now!
Just out of interest, slightly O/T, why did you chose the 2.4kWh batteries and not the 3kWh in the first place? On a £ per kWh basis the 3kWh seem to offer the best value.
I found the £/kWh to be the same. Getting the 2.4kWh ones into the loft was enough of a performance, I don’t think I’d have been able to get the 3.5kWh ones up there...