Check out Viair portable 12v compressors. Not battery powered but has long leads with alligator clips to quickly connect to your RV or Truck batteries. The new RVS series are specifically designed for RV users. They are pricey but very high quality.
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2019 Montana HC 310RE
2010 Wildcat 29RLBS
2014 Ford F-350 Lariat 6.7
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