Citroen Ami EV Ran Out of Power after 37 Miles - in a Thunderstorm!

Set out in warm sunshine, in my Citroen Ami Electric Quadricycle, for a trip into the Ochil Hills of Perthshire. I intended to drive down Dunning Glen and onto Auchterarder where I could recharge the car for the return journey.
Unfortunately the weather turned nasty and I decided to return when I got (the 18.5 miles) to Dunning Village. In theory I would have enough range (24 miles) to get back home. However, the road back from Dunning to Muckhart is long and steep and the Ami used 14 miles of range on this stretch (it only used 8 miles range on the way down). I got the 3 mile range warning in Saline which is about 1.5 miles from my house. This reduced the speed to 10 mph of the steep hill out of Saline and range dropped to 1 mile before I reached the house. On arriving the range was showing zero miles! Phew - just made it. All the time the car had been running through torrential rain.
The journey was 37 miles and the Ami used all 46 miles of range. Driving time was 1hr 45 minutes. Recharge time was just over 4 hours.