I agree with all the previous posts, 98% 'should' give 200 miles plus even on a cold winters day. Now with temperatures up in the mid to high 20's then 230 miles is easily obtainable.
Regarding the granny lead, it 'is' sensitive to bad connections in a wall socket and extension leads, I have a 'proper' extension lead, by that I mean 2.5mm2 cable, not the 1.5mm2 usually found in 13amp extension cables, and even this gets warm with the 3Kw flowing through it, and VERY warm if left in a loop!
I have a Juice Booster 2 which gives fault codes and the current that can be taken by the car when charging with a 13amp plug.
10amps max out of a standard 13amp socket.
A friend has a 32amp supply, except it isn't capable of delivering 32amps, only 20amps is 'safely' possible!
The Juice Booster 2 is a great bit of kit, pricey but has got me out of trouble quite a few times.
As for charging in France, do your homework! CCS DC charging isn't as common place as the UK, and often the charge points are out of action!
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