Just saw these today. The Xantrex FREEDOM e-GEN is essentially an integrated system that is designed and engineered as a package that should make it easier for RV manufacturers to get it right.
http://www.xantrex.com/email/egen/fl...-flyer-web.pdf
The Coachmen Class B system flyer states it is based on a 600 Amp-hour lithium battery system (looks like 12 Volts) which makes it about 7.2 kWh. The inverter/charger is a 3,000-watt unit that can run everything including Air Conditioner and microwave. The engine-driven alternator is rated at 280 Amps, with 180 Amps available at idle.
It looks like luxury Class B manufacturer, Midwest, is also offering the Xantrex FREEDOM e-GEN.
Midwest Offering Lithium Ion System By ‘Xantrex’ | RV Business
Both of these ditch the conventional generator and back up the larger lithium battery bank with an engine-driven alternator that exceeds 3 kW. Unfortunately, both are displaying Mercedes Sprinter vans that makes adding a second stand-alone alternator much easier than most other motorhomes. In my opinion Ford should follow Mercedes' lead on this and offer a bracket option, or better yet a second HD alternator, on gasoline motorhome engines.
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