Power hungry? Just cut to the chase and wheel in our most powerful generator: 12,000 watts should be enough to satisfy whatever you need to power up-120 or 240 volts. The EF12000DE's brush-type AVR AC alternator draws its motivation from a powerful, reliable 635cc twin-cylinder engine that'll run up to ten hours between fill-ups. We wouldn't send our flagship out there without the full complement of features: Oil Watch Warning System, Auto Voltage Regulation, Transistor Controlled Ignition, Noise Suppressor, G.F.I Electric Starting* and Economy Idle-you name it, this powerful generator's got it.
Battery not included.
View specs: http://www.yamahamotorsports.com/powerproducts/products/modelspecs/450/0/specs.aspx