Any innovative solutions for adding more batteries?

smkettner wrote:
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If you just add two batteries you might fit a Honda 1000 in the space but again you need access for ease of use. The 1000 is taller than the Onan.

I'm not familiar with where the CS generator is normally located. I assume it is outside and under the floor. Wouldn't a Honda Inverter generator get very dirty there? Wouldn't road gunk mess up the pull start cord and the controls? How would you fill the gas tank? What about exhaust? Could you reach the pull cord?