Exercising a generator without a battery installed

[JessJoe4168]

I have my FW battery in the garage on a battery tender and wanted to exercise my Honda 2200 and my Generac 5500 generator, without installing the 12V DC battery.
I would plan to extend slides and run the AC or heat for a good hour.
I was concerned that some of the systems (maybe heat) might need 10.5V DC to energize sail switch etc..

Would there be any negative consequences to exercising these generators without a battery installed?

Thanks

[JCR GD]

I think you are fine just be sure the battery cables are not touching anything as they will become energized from the converter.

[FT4NOW]

As another option, if you have an electric space heater you could use that to put a load on the generator and then you dont need to mess with the RV shore power cord or worry about battery wires touching each other. A 1500w space heater will draw about 12A.

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