I have one of these beasts that is a arc welder up to 250Amp which also has power outlets both 240 and 110v. It has a Lombardi diesel air cooled engine and although old it does what it says on the tin. What I would like to know is has these machines got a battery charge system fitted as, when it is running, I do not get an increase in volts to the battery. There is no alternator as such like on a car so I assume there should be a feed from the main electric generator somehow.