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The Cummins 6.5HGJAB-904 is a 6.5 kW liquid-propane RV generator built for Class A motorhomes and large fifth wheels. It runs on LP vapor, so it avoids gasoline varnish and carburetor problems, and its 653 cc air-cooled V-twin delivers 6,500 watts continuously at 120V. Digital voltage regulation and self-diagnostics set it apart from simpler Onan-style rivals, and owners report it starts reliably and carries one or two air conditioners with power left over. The trade-offs are weight, noise and propane appetite: at 299 lb dry and about 70 dB at 10 ft, it is a fixed-installation unit, not a portable one.
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Lowest price we've seen: $7,718.07 on Nov 11 at AP Generator Parts. Tracked across 3 stores since Nov 11.
Owners rate it highly, praising reliable starting, steady voltage and enough output for two air conditioners. Complaints center on noise and propane consumption under load.
The Cummins 6.5HGJAB-904 is a 6.5 kW RV generator that runs on LP vapor. It produces 6,500 watts of continuous AC output at 120 volts and 60 hertz, with a peak output of 6,500 watts. It can run one or two air conditioners with power to spare.
It has an air-cooled, overhead-valve (OHV) Cummins V-twin engine with a displacement of 653 cc and 11.6 horsepower. The generator starts electrically and is enclosed, with a muffler. Digital voltage regulation and self-diagnostic capability are built in, and a low oil shutdown is included.
The generator weighs 299 lb dry. Noise level is 70.0 dB measured at 10 feet.