Maximum energy density for mid-size compartments.
The Expion360 EX1 12V 368Ah LiFePO4 Lithium Battery is the definitive, high-capacity power solution for overlanders, van builders, and marine enthusiasts who demand serious off-grid endurance without the bulk of a massive battery bank. Utilizing advanced 4.5Ah cylindrical cells, Expion360 has engineered a battery that packs a staggering 368 Amp-Hours of deep-cycle capacity into a single, compact footprint—offering a massive 22% increase in energy density over standard lithium configurations. Whether you are running a 12V portable fridge, a heavy-draw inverter, or field-testing high-draw electronics, this single battery replaces multiple smaller units to streamline your rig's power grid. Available at the Overland Truck Store in Bremerton, it is built to handle the constant vibrations of corrugated trails so you can confidently "Rub Some Dirt on It."
Technical Engineering & Performance
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Optimized Capacity Density: By utilizing premium, stainless steel encased 26650 cylindrical cells rather than standard prismatic cells, this battery achieves an impressive 32% increase in energy density. You get 368Ah of usable power in a space-saving chassis.
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SmartTalk™ Bluetooth Monitoring: Take the guesswork out of your power management. The built-in Bluetooth telemetry pairs directly with the Expion360 mobile app, giving you instant, precise technical feedback on your State of Charge (SOC), voltage, current draw, and cell temperature from up to 50 feet away.
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Robust Internal Architecture: Designed to survive the low-frequency vibrations of rugged backcountry washboards, the internal cells are securely welded via thick copper/tin machined collector plates. This creates an incredibly durable mechanical backbone that minimizes internal resistance and prevents heat buildup during heavy discharges.
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Smart Internal BMS Protection: A commercial-grade internal Battery Management System continuously balances individual cells and monitors the pack for short circuits, overcharging, thermal anomalies, and deep discharging to safeguard your investment.
Durability & Field Resilience
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Oversized Solid Brass Terminals: Engineered for maximum mechanical strength and electrical conductivity, the oversized terminal pads are 96.7% larger than standard battery posts, significantly minimizing cross-polarity risks and resisting trail-induced loosening.
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IP55 Weatherproof Housing: Encased in a ruggedized, reinforced ABS shell rated for IP55 protection. It seals out trail dust, grit, and low-pressure water ingress, making it ideal for exterior vehicle storage boxes, truck beds, or marine compartments.
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Integrated Boltdown System: Designed with a reinforced base structure and integrated mounting feet, allowing you to bolt the unit directly to your vehicle floor or battery bay without needing to purchase expensive, flimsy aftermarket trays.
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Industry-Leading 12-Year Warranty: Built to pass rigorous UL1973 safety standards for the entire battery pack, ensuring complete peace of mind and long-term reliability on multi-week expeditions.