thanks for the replies, I suppose it was inevitable.
I'ts just that I bought a battery one, tried it and it took about 20 minutes and even then I had to finish the job with a foot pump as it wasn't blown up properly. So great, I'll take the battery one back and get the cigarette lighter one.
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.