Re: 240V "stacked" eu2000i generator???
Welcome to the forum.
Short form: the EU200i's do not stack in series for 240 VAC.
However, the do stack in parallel to double the capacity ( 3200 Watts) and should be able to power an autotransformer to produce 240 VAC output. I've not tried it but it should work.
You would not have enough generator power to feed a 6.6kW charger. It will try to pull its full current and cause the gens to fault and shut down.
Since there would be no fuel saving to running two small generators flat out to try and power that much demand, you'd be better off buying a bigger gen if that is the main purpose of it.
1220 Watts of PV, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.
Ohm's Law: Amps = Volts / Ohms
Power Formula: Watts = Volts * Amps