A little depends on what you're towing it with, what type of braking system you're using and how long a day you put in. If the only going a couple of hundred miles a day, I wouldn't worry about the battery. If your braking system draws its power from the battery, you may want to run a charging line from the motorhome. This isn't difficult and will prevent a discharged battery. Be sure to turn off the radio and heater fan.
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