Looking for a true RV off-grid power system? In this video we walk through a complete Mastervolt lithium power system installed in a Grand Design Lineage 25FW, designed for reliable boondocking and camping without hookups.

In this video, Josh from ABC Upfitters walks through a professionally designed Mastervolt off-grid power system installed in this coach. This setup is built for reliable off-grid camping and boondocking, delivering quiet, dependable power without needing shore power.

If you're researching RV lithium battery upgrades, solar, or off-grid RV electrical setups, this walkthrough shows how a properly integrated Mastervolt system works together to power your RV.

Mastervolt Off-Grid System Highlights:
• 3000W Mastervolt inverter/charger
• 460Ah Mastervolt lithium battery bank
• 50A Mastervolt DC-to-DC charger for alternator charging
• Mastervolt touchscreen system monitor

This type of setup is ideal for RV boondocking, off-grid travel, overlanding, and extended camping without hookups.

ABC Upfitters specializes in turnkey off-grid power systems for RVs, designed around premium components and professionally integrated installations.

🌐 Learn more about our RV off-grid power systems:
https://www.abcupfitters.com/

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#RVLithiumBattery
#RVInverter
#RVElectricalUpgrade
#Mastervolt
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#ABCUpfitters

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We recently completed a major electrical upgrade on this Thor Sprinter 19P, turning it into a true off-grid powerhouse.

This build now features 920Ah of Mastervolt lithium battery capacity, giving the owner double the usable energy for extended boondocking and everyday comfort. To support that capacity, we added a 250A secondary alternator, providing fast, reliable charging while driving.

All system connections are cleanly organized on a dedicated component board inside the van, making the system easier to service, troubleshoot, and expand in the future. Solar charging is handled by a 25A Mastervolt solar controller, rounding out a well-balanced, integrated Mastervolt power system.

At ABC Upfitters, we specialize in turnkey electrical upgrades that prioritize reliability, serviceability, and real-world performance.

If you’re considering a battery or alternator upgrade for your Thor Class B RV, this is a great example of what’s possible.

🌐 Learn more: https://www.abcupfitters.com

📞 Call us: 574-333-3225

📍 Installed by ABC Upfitters
🔋 Mastervolt Lithium Systems
🚐 Built for serious off-grid travel

Don’t forget to like, subscribe, and reach out if you have questions about upgrading your own rig.

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This rig features a fully integrated Mastervolt system with a massive 24kWh lithium battery bank, dual 3500W inverters, dual 200A chargers, 2660W of solar, and dual 50A DC-DC chargers. If you’re researching RV lithium upgrades, solar RV systems, or off-grid power solutions, this build shows what a true high-end system can do.

Interested in upgrading your RV power system?
We design and install turn-key 12/24/48v Mastervolt off-grid systems at our shop in Elkhart, Indiana.

📍 Elkhart, IN
📞 574-333-3225
🌐 www.abcupfitters.com

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