The Honda EU2000 Companion is exactly that. A great companion to the "standard" EU2000i. capacity to handle the doubled output. Enter the Companion. This generator includes a heavy duty 30 amp outlet that can handle the full output of two EU2000 generators connected for double the output. There is a trade off. This model loses the DC battery charging system for this 30 amp outlet.
If you are interested in buying just one EU2000 and won't be connecting them together to produce double the power, then the Companion is not the model for you. It does not include the 12 volt battery charger.
The bottom line: If you want an EU2000 with 12 Volt battery charger and you don't intended to hook two of them together, follow the link below: Specifications are listed below.