No need for Pea-ing matches here........
The OP is simply trying to decide whether to disconnect the chassis battery or not, and is probably open to other battery related maintenance issues. Best thing you can do is suggest to the OP specific products that will do the job.
Get a 120v powered battery tender, something that charges, watches battery voltage, turns off an on as needed to keep the battery fully charged, and probably has a desulfating cycle to help extend the life of the battery. Either run the tender off the power pedestal or an external receptacle on the MH and use a simple, cheap 16 gauge extension cord for that purpose.
The OP is not looking for million dollar ideas I suspect.
Northern Tool has a fairly highly rated Battery Minder that is 2 amp max, does a good job of keeping the battery charged and desulfating it. It comes with alligator clips and also adapters so it can be hardwired if desired. Its a little pricey at $80 but is a good unit. This will also be useful in the future when the MH is in storage and batteries need to be kept up.
http://www.northerntool.com/shop/tools/product_200483764_200483764
Charles
