OK... 
How stupid am I ??
Not nearly as stupid as those measurements, there is obviously something wrong with Gary's tape measure.
How can this battery measure 380 x 320 x 300...
...when this pack is twice the Ah capacity, more than twice as heavy, yet its total volume
(11.115 litres) is apparently less than a third of the above battery's 36.48 litres?
I somehow don't think that's correct.
If you compare it against the size with the Magic Pie's hub
(which is approx 300mm diameter) you can see its height is a lot shorter than any of those measurements, and don't forget the bag is also slightly larger.
The total volume
(according to those measurements) would be 5.4 time more than this 6.75 litre pack.
Gary, have you got a tape measure that is not made of elastic that you can measure the actual height, length and width with a bit more accuracy please?
Alan
