I agree you have to disconnect the battery from the RV system or it will go dead from small drains like the LP gas detector.
You can also ask if they would connect the RV to electricity to power a battery tender.
If they won't/can/t plug it in you could add a small solar battery charger, again after disconnecting it from parasitic loads.
Lots of posts all over the forum.
This is a good time to learn more about batteries, maintenance and which one to buy. Dealer installed batteries are usually lowest dollar quality anyway.
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2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
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