My 2011 Renault Kangoo has a type 1 socket and only charges slowly. Quotes to install a 7kW charger were exorbitant (£1,500 and more) so I've decided to just use a £170 granny cable. I’m reluctant to leave it outside the house, but I don’t want to take it inside every morning either, so I’ve put it in a box on the wall. I left the 13A plug on it so I can take it when I visit Granny. Inside the box is a socket supplied through a WiFi-controlled 16 Amp Sonoff switch. I used the eWeLink app on my phone to make the socket live during my Economy7 hours (00:30 to 07:30 in my case, check with your supplier for yours) so my van charges overnight at 8p/kWh rather than 12p. Of course anybody with a screwdriver could remove the front panel, unplug the charger and walk off with it, but I’m hoping that having it hidden in a box will deter any opportunist thief.