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  • Price: $85,500
  • Year: 2022
  • Model: MONTANA 3781RL
  • Property ID: 7027659
  • Partner ID: 5040045838
  • Posted On: Apr 17, 2026
  • Updated On: Sep 11, 2026

RV Description

2022 Keystone Montana 3781RL

Ultimate Off-Grid Setup | 1,600W Solar | 1,000Ah Lithium

Price: $85,500

Location: Lewiston, Idaho

Mileage: Roughly 10,000 miles

Proven Ultimate Boondocker: This rig was meticulously built and fully proven to live completely off-grid. This exact setup allowed us to park in the desert for 6 months at a time (twice) without ever having to move the unit, using the included custom gear to easily haul fresh water and dispose of waste. Clean title in hand, extended transferable warranty included.

ULTIMATE POWER & SOLAR SYSTEM ($25k Value)

       Solar Panels: 1,600 Watts of Solar (8x 200W premium panels). Added panels were specially ordered and perfectly matched to the factory OEM panels to guarantee peak system efficiency and balanced voltage. All panels are on adjustable tilt brackets to allow for maximum efficiency.

       Batteries: 10x 100Ah Battle Born Lithium Batteries (Massive 1,000 Amp-Hour Bank).

       Components: Complete premium Victron Energy power system (Inverter/Charger & Controllers).

       Battery Monitor: Victron BMV-712 Smart Monitor with built-in Bluetooth (Track precise battery bank % and power usage straight from your phone).

       Power Cables: Massive 70 ft total power reach via 1x 35-ft hardwired cable and 1x 35-ft extension cable, both neatly organized on smooth crank-up storage wheels.

       Surge Protection: Upgraded Power Watchdog Smart Surge Protector (In-line/Hardwired) with Bluetooth to protect the high-end electrical system from bad shore power.

       Power Management: Upgraded Furrion F50 Automatic Transfer Switch (ATS) for safe, hands-free power source switching.

       Air Conditioning: Custom Soft Starts (Slow Starts) added to the AC units to eliminate startup power surgesallows AC to run flawlessly off the battery bank or a single generator.

       Monitoring: SeeLevel II Tank Monitor system for 100% precise tank readings.

Detailed solar component description and breakdown available upon request.

INCLUDED CUMMINS BACKUP GENERATOR PACKAGE

       Generators: 2x Cummins 4500-Watt Inverter Generators (Quiet, reliable backup power).

       Capability: Parallel-capable setup includes the parallel connection cable to combine power for up to 9,000W of peak output.

️ BRAND NEW MAINTENANCE & RUNNING GEAR

       Dealer Certified: Fresh out of the shop with all warranty work fully completed by the dealer.

       Verified History: The dealership service manager is willing to speak directly with serious, qualified buyers to verify the rig's excellent condition and completed work.

       Braking System: Brand new complete brake assembly replaced on all 4 wheels. (Only one factory brake shoe lining was showing wear while the others were still at 70%+, but the entire system was completely replaced on all wheels to ensure perfect safety and balance).

       Wheel Bearings: Brand new wheel bearings (replaced strictly as proactive preventative maintenance to ensure they were 100% new, not due to any damage or failure).

       Hot Water: Girard On-Demand Tankless Water Heater (endless hot water).

       Custom Storage: Replaced the electric fireplace with custom matching doors to create highly usable, much-needed extra living room storage.

       Upgraded Airflow: Custom lowered the ceiling fan to a functional height so it creates genuine, refreshing airflow through the main living area.

       Upgraded Hardware: New upgraded heavy-duty drawer slides installed in the bedroom (built to handle travel and daily use without bending or failing).

       Fridge Upgrade: Custom added 2x 4-inch cooling fans to the refrigerator compartment to maximize cooling efficiency and airflow on hot days.

️ EXTRA BOONDOCKING GEAR & SAFETY INCLUDED

       Waste Management: Included macerator pump and hose system for effortless, long-distance power dumping without moving the rig.

       Towing Security: Brand new Halo 3 camera system featuring a custom-installed antenna mount on the front of the 5th wheel to guarantee a crystal-clear, lag-free wireless signal to the truck.

       Cargo Storage: Rear receiver hitch cargo basket package featuring an integrated high-lift jack receiver mount.

       Safety: Upgraded full-size fire extinguisher installed (major upgrade over the small factory plastic units).

       Gear: Portable sewer tote (honey wagon) & fresh water tote for easy off-grid refilling.

CONDITION & EXTRAORDINARY CARE

       Exterior Protection: Premium dealer-applied ceramic coating (protects the finish, prevents oxidation/fading, and makes washing effortless).

       Laundry: Includes installed, residential-style stacked washer and dryer units.

       Mattress Upgrade: Features a premium, 2-month-old Firm Wilderness RV King size mattress (huge upgrade over standard factory mattresses).

       Smoking: Strictly non-smoking.

       Deep Detailed: While pets were occasionally inside, the rig has been meticulously cleaned down to the studsincluding using a dental pick and vacuum to completely clear out the Velcro under the furniture. It looks and smells brand new.

       Layout & Specs: Popular 3781RL floorplan featuring a front master bedroom, spacious rear living room, kitchen island, and residential amenities. Full factory build details, floorplan graphics, and factory specs are available directly on the Keystone RV website.

       Warranty: Extended warranty is fully transferable to the new owner for just a small transfer fee.

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