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Custom System Design
Custom RV Solar & Lithium Power Systems
Looking for a custom RV solar system, lithium battery upgrade, or complete off-grid RV power solution? Big Beard Battery, located in Athens, designs and installs custom RV power systems for customers across Texas and nationwide — including Dallas, Waco, Tyler, Texarkana, and beyond.
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We specialize in RV solar installation, Victron Energy systems, lithium battery upgrades, inverters, generators, and complete off-grid power systems for fifth wheels, motorhomes, toy haulers, travel trailers, vans, and mobile living setups. Whether you need basic backup power or want to run your RV completely off-grid, our team designs a system specifically for your RV, travel style, and energy usage.
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Why RV Owners Choose Big Beard Battery
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Custom RV solar system design
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Lithium battery upgrades for RVs
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Victron Energy authorized dealer and installer
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Off-grid RV power systems
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RV inverter and charging systems
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Nationwide shipping and support
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DIY-friendly system plans and wiring diagrams
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Professional RV solar installation in Texas
Flexible RV Solar Installation Options
DIY RV Solar Installation
Perfect for hands-on RV owners. We design your system, ship components nationwide, and provide detailed wiring diagrams and support.
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Professional Installation in Athens, Texas
Bring your RV to the Big Beard Battery team at the Road Life Complex in Athens for a complete professional RV solar and lithium battery installation.
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DIY Solar Install Clinic
Learn while you build with our hands-on DIY Solar Install Clinic. Install your own RV solar and lithium system alongside our experienced team with access to tools, equipment, campsites, and guided instruction.
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Mobile RV Solar Installation
Need installation at your location? We can connect you with trusted mobile RV solar installers throughout the United States.
​Step 1: Request Your Free System Design
Complete our Free System Design form and tell us about your RV and power goals. We’ll gather important details like:
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RV type and size
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Current electrical setup
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Camping style and power usage
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Desired battery capacity
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Solar needs
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Generator integration
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Off-grid goals
This allows our team to design the right RV solar and lithium battery system for your specific needs.
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Step 2: Consultation with an RV Power Expert
A member of the Big Beard Battery team will contact you to review your project and discuss recommendations for your custom RV power system. We’ll help guide you through options for:
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RV lithium batteries
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Solar panels
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Victron inverters and chargers
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Battery monitoring systems
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Generator compatibility
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Future expansion options
Our team includes experienced RV technicians and off-grid power specialists who understand real-world RV camping and travel.
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Step 3: Receive Your Custom Quote
After your consultation, you’ll receive a detailed written quote outlining the recommended components for your RV solar and lithium system. Your quote may include:
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Lithium batteries
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Solar panels
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Inverters and chargers
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Victron components
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Wiring and protection equipment
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Installation options
We provide transparent pricing, expert recommendations, and ongoing support throughout the process.