Thanks for the replys everyone.
It has the socket for a 12volt charge lead, but didnt come with lead itself, so I'll see if I can pick one up off eBay.
Or..... would putting a domestic surge protection socket onto the genny then running the van from the that, protect the voltage from spiking?
As for the noise and smell, if the fuel/oil is mixed correctly it wont stink or smoke, and the noise........ well, you may have a point 🙂
It wont get used very often, but for the stupidly cheap price I paid for it, I just could'nt refuse it.