It is well known that the Freightliner/Journey has many parasitic drains and will kill the chassis batteries after some days if you don't have them on a trickle charger. I got a little battery minder for my chassis batts and have no problem. I do have a shore line where I store my rig.
Later versions of the Journey came from the factory with a Trickle Charge device that would keep those batteries charged as long as you have the coach connected to shore power.
It does sound like your's are draining a bit more quickly than most have described.
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'07 Country Coach Allure 470 Siskiyou Summit #31578, Cummins ISL 425; 2014 Ford F150 toad; Air Force One Toad Brake.
Glen Allen, VA; Smith Mountain Lake, VA.
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