RV Lithium Batteries for Off-Grid Adventures

WattCycle 12V LiFePO4 batteries for RVs, vans, and trailers. Power your fridge, lights, and gear past cell service and far from the crowds.

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Explore the 628Ah Ultra
  • 12+ Years of Experience
  • 400+ Certifications
  • 50+ R&D Experts Team
  • 5+2 Years Warranty

Find the Right RV Lithium Battery for Your RV

Select your RV type to see the best-matched 12V LiFePO4 batteries, from Class A motorhomes to travel trailers and food trucks.

CLASS A · FULL-SIZED MOTORHOME

Keep your AC, refrigerator, kitchen appliances, and everyday essentials running with reliable battery power for extended trips and off-grid living.

CLASS B · COMPACT CAMPER VAN

Make the most of your space with reliable power for your fridge, lights, electronics, and everyday essentials on the road.

CLASS C · FAMILY-READY MOTORHOME

Enjoy every road trip with reliable power for your refrigerator, lighting, water pump, and essential appliances, from weekend getaways to extended adventures.

TRUCK CAMPER · GO ANYWHERE

Explore further with compact, reliable power for your lights, fridge, water pump, and essential devices on remote off-grid adventures.

TRAVEL TRAILER · UNHITCH AND STAY

Enjoy more freedom wherever you park with reliable power for your refrigerator, lights, water pump, and everyday essentials.

5TH WHEEL · FULL-TIME LIVING

Bring home-like comfort to every destination with reliable power for your appliances, entertainment, and everyday essentials during extended stays.

FOOD TRUCK · POWER THAT KEEPS SERVING

Keep refrigerators, freezers, lighting, ventilation, and POS systems powered with reliable energy for busy days on the go.

Choose Your RV Battery by Trip Length

From weekend getaways to months on the road, compare WattCycle LiFePO4 batteries by capacity, monitoring features, and how long you'll be off-grid.

    Flagship 12V 628Ah Ultra

    Our biggest RV battery: 8 kWh of lithium power with a 300A smart BMS and Bluetooth monitoring, built for long trips and full-time living.

    Go longer. Worry less.

    One 12V 628Ah battery powers your fridge, lights, inverter, and appliances for days, with 300A of output ready when you need it.

    8038Wh

    Capacity

    300A

    Smart BMS

    ECE R10

    Europe Certified

    IP67

    Waterproof Metal Case

    Which WattCycle Battery Suits Your RV?

    Pick the right power, size, and features for your setup.

    BATTERY

    12V 314Ah Mini Super

    12V 314Ah Mini Self-heating

    12V 314Ah Mini Bluetooth

    12V 314Ah Mini

    Energy4019Wh4019Wh4019Wh4019Wh
    BMS200A200A200A200A
    Bluetooth
    Active Balancing
    Dimension15.22 × 8.12 × 10.74 inches (including handle)15.12 × 7.64 × 9.76 in15.12 × 7.64 × 9.76 in15.12 × 7.64 × 9.76 in
    Weight60.30 lbs59.52lbs 59.52 lbs59.52 lbs
    Self-heating
    Price
    $509.99 $899.99
    $529.99 $699.99
    $489.99 $679.99
    $469.99 $629.99

    Battery Runtime Calculator

    Enter your battery specs and the devices you'll run at once to estimate how many hours it will last.

    Devices Running at Once

    Device Power (W)
    Total Energy 0 Wh
    Total Power Draw 0 W
    Estimated Runtime 0 hrs

    · Estimated at 95% usable capacity, assuming all devices run continuously and simultaneously. Actual runtime varies with startup surge, temperature, and wiring losses.

    WattCycle at RV Shows & Events

    From trade shows to outdoor expos and local meetups, see where we show up to talk lithium power with the people who use it.

      Jun 26–28, 2026 · Redmond, Oregon · Booth A339

      Overland Expo Pacific Northwest

      Thanks to everyone who stopped by Booth A339 in Redmond, Oregon. Among 300+ exhibitors, we met overlanders and adventure travelers and talked off-grid power for their rigs, vans, and campers.

      Jan 17–25, 2026 · Quartzsite, AZ · Booth #650A

      Quartzsite RV Show

      Thanks to everyone who stopped by Booth #650A in Quartzsite, Arizona. We showed off our 12V LiFePO4 lineup, from 100Ah to the 628Ah Ultra, and swapped real-world power tips with RVers.

      Jun 23–25, 2026 · Munich, Germany · Booth C4.251

      Intersolar Europe

      Three days in Munich with solar pros, RV owners, and creators. We showed our new balcony storage system and the 12V 314Ah under-seat RV battery, and talked real-world power needs.

      Oct 28–29, 2026 · Melbourne, Australia · Booth RR151

      All Energy Australia

      Two days in Melbourne with Australia's clean energy community. At Booth RR151, we shared our LiFePO4 battery solutions and talked storage needs with professionals, partners, and customers.

    Real RV Setups and Real Off-Grid Power

    Watch real WattCycle customers and creators put these batteries to the test.

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      Delta 2 and Wattcycle powering a few days of van camping

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      Van Battery Upgrade with Watt Cycle 314Ah Batteries

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      Is a Rooftop AC Worth It? DIY Install & Wiring Walkthrough

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      Garden Growth & WattCycle Powering Off-Grid Life 🔋🌱

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      Big power in a smaller package! Wattcycle's 12V 314Ah Mini battery

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      The Active BMS Arrives on the WattCycle 12V 314Ah Mini Super Lithium Battery

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      THE BEST LITHIUM BATTERY FOR RV AND VAN?? Wattcycle 12V 314Ah Mini & Super Battery, Testing, Review

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      I Built A Completely WATERPROOF DIY Power Station With Over 1200kw Of #WattCycle POWER!

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      Wattcycle 12V 314Ah Battery Discharge Test: Is This Lithium Battery Actually 314ah?

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    RV Power Guides

    Everything you need to plan, size, and troubleshoot your RV's power system.