What are the dimensions and weight?

Dimensions: 14.8" L x 13.0" W x 10.4" H. Weight: Approximately 100.4 lbs (45.5 kg). Group Size: Custom "EX1" footprint, designed for high-density storage.

12V 368Ah LiFePO4 Lithium Battery – EX1, Bluetooth

Name: 12V 368Ah LiFePO4 Lithium Battery – EX1, Bluetooth | Expion360
Brand: Expion360
SKU: EX-EX1-12368-B
Price: 3999.0 USD
Availability: InStock

Expion360 12V 368Ah LiFePO4 Battery – EX1 Extreme Density & Bluetooth

Power your off-grid lifestyle with the Expion360 EX1 368Ah, a beast of a battery engineered for extreme energy density. By utilizing advanced UL1642 recognized cylindrical cells, this single unit delivers a massive 368 Amp-Hours of capacity—equivalent to four standard Group 27 batteries—in a compact, proprietary footprint.

Designed for high-demand applications in large RVs and off-grid cabins, the EX1 features an IP55 water-resistant case and an integrated mounting system for secure installation. To handle the immense power output of this extreme density battery, we utilize oversized brass terminals that maximize electrical connectivity and reduce heat buildup for enhanced safety. With UL1973 compliance and SmartTalk™ Bluetooth monitoring, it is the safest and most reliable foundation for your high-capacity power bank

Best For:

RV house battery systems
Overland and off-grid vehicles
Marine and boat power systems
Backup power and mobile work setups
Off-grid cabins and remote installations

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Pairs well with

Extreme Energy Density: 368Ah in a Single Unit Maximize your off-grid potential with the EX1. This single battery unit packs a massive 368Ah capacity, replacing nearly four standard 100Ah batteries. It is the ideal solution for large RVs, skoolies, and marine vessels where maximum power storage is required in a consolidated footprint.
SmartTalk™ Bluetooth Monitoring Stay connected to your power system. The integrated SmartTalk™ Bluetooth technology allows you to wirelessly monitor state-of-charge, voltage, and battery health directly from your smartphone, ensuring you always know how much power is available for your adventure.
Rugged IP55 Construction & Oversized Terminals Built to perform in demanding environments. The EX1 features an IP55-rated case that protects against dust and low-pressure water jets. It utilizes oversized brass terminals to handle high-current loads efficiently, ensuring cool operation even during heavy discharge cycles.
High-Density Cell Technology Engineered with UL1642 recognized stainless steel encased 26650 cylindrical cells. This advanced internal structure provides superior structural integrity and safety compared to prismatic cells, allowing for greater energy density with minimal weight.
12-Year Warranty & Integrated Mounting Invest with confidence backed by an industry-leading 12-Year Warranty. The battery also features a built-in mounting system (feet) that simplifies installation, allowing for secure fastening without the need for complex aftermarket brackets.

Technical Specifications

Nominal Voltage	12.8V
Capacity	368Ah
Weight	100.4 lbs (45.5 kg)
Dimensions	14.8" L x 13.0" W x 10.4" H (375mm x 330mm x 266mm)
Charge Voltage	14.4V - 14.6V
Terminals	Oversized Brass
Communication	Bluetooth 5.0 (SmartTalk™)

Product Spec Sheet and User Manual

User Manual

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Product Spec Sheet

View Spec Sheet

Advanced LiFePO4 Lithium Chemistry for Unmatched Longevity

Experience the pinnacle of energy storage with our high-grade LiFePO4 (Lithium Iron Phosphate) chemistry. Unlike traditional lead-acid batteries that fail after a few hundred cycles, the Expion360 e360 series is engineered for long cycle life, providing over 3,000 to 5,000 cycles at deep depths of discharge. Utilizing robust stainless steel encased 26650 cylindrical cells, this battery offers superior thermal stability and structural integrity, ensuring your power investment lasts for a decade or more of adventure.

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Real-Time Monitoring with SmartTalk™ Bluetooth

Eliminate "range anxiety" with integrated SmartTalk™ Bluetooth monitoring. By syncing your battery with our intuitive mobile app, you gain a high-tech window into your power system’s health. Track real-time metrics including State of Charge (SOC), voltage, current, and temperature directly from your smartphone. Whether you are managing a single unit or a massive bank, our smart BMS (Battery Management System) ensures you have the data you need to stay off-grid longer with total confidence.

SmartTalk™ APP

OEM-Ready Design for Scalable Power Systems

Whether you are a DIY enthusiast or a professional upfitter, our OEM-ready design offers the ultimate flexibility for scalable power systems. Featuring standard BCI group sizing for a direct drop-in fit and integrated CAN Bus communication, these batteries are built to grow with your needs. Seamlessly network multiple units in series or parallel to power heavy-duty inverters and sophisticated off-grid electronics, making it the preferred choice for high-end van builds and marine power grids.

Scalable Solutions

EX1 - 12V 368Ah LiFePO4 Lithium Battery – Features

Massive 368Ah Capacity

The ultimate power upgrade. This single EX1 unit provides 368 Amp-Hours of deep-cycle lithium power, equivalent to running four standard Group 27 batteries in parallel. It is the ideal solution for extended boondocking and high-power inverter setups.

Advanced Battery Management System (BMS)

The intelligent BMS acts as the brain of the battery, actively monitoring cell health 24/7. It provides fail-safe protection against overcharging, deep discharging, short circuits, and excessive currents, ensuring your battery operates safely for its entire 12-year warranty lifespan.

Integrated Mounting System

Secure installation made easy. The EX1 housing features structural mounting points molded directly into the base. This allows you to bolt the battery securely to the floor of your RV or boat, ensuring it stays safely in place even on the roughest roads.

Bluetooth® Enabled

Stay connected to your power system wirelessly. Integrated Bluetooth® technology syncs seamlessly with the Expion360 SmartTalk™ app, allowing you to monitor real-time voltage, current, temperature, and remaining capacity directly from your smartphone without needing a separate monitor.

Oversized Brass Terminals

High-current ready. To handle the massive power output of the 368Ah bank, the EX1 is equipped with oversized brass terminals. These ensure maximum conductivity and low resistance, perfect for connecting heavy-gauge cabling and high-output inverters.

UL1973 Compliant Design

Engineered for safety. We utilize UL1642 recognized stainless steel cylindrical cells and a robust BMS to ensure the entire battery meets UL1973 compliance standards. This guarantees protection against thermal runaway, short circuits, and over-voltage events.

EX1 12V 368Ah LiFePO4 Lithium Battery Technical Specifications

Battery Chemistry	LiFePO4 (Lithium Iron Phosphate)
Nominal Capacity	368 Ah
Nominal Voltage	12.8 V
Group Size	Custom EX1 Form Factor
Dimensions	14.8" L x 13.0" W x 10.4" H (375mm x 330mm x 266mm)
Weight	100.4 lbs (45.5 kg)
Communication	Bluetooth® (SmartTalk™ App)
Moisture Rating	IP55 (Dust & Water Jet Resistant)
Cell Type	UL1642 Recognized 26650 Cylindrical
Safety Compliance	UL1973 Compliant, UL1642 Recognized Cells
Mounting	Integrated Mounting Feet
Warranty	12 Years

FAQs

Technical Specifications

This is a 12V (12.8V nominal) battery with a high capacity of 368 Amp-hours (Ah). This capacity is roughly equivalent to four standard Group 27 lead-acid batteries in a single unit.

Dimensions: 14.8" L x 13.0" W x 10.4" H.
Weight: Approximately 100.4 lbs (45.5 kg).
Group Size: Custom "EX1" footprint, designed for high-density storage.

The battery uses UL1642 recognized 4.0Ah stainless steel encased cylindrical cells (26650 form factor). These cells are mechanically robust and designed for optimal thermal management and power density.

Expion360 provides a 12-year warranty for this battery, ensuring long-term reliability.

Features & Connectivity

Yes, this model features built-in Bluetooth connectivity. You can monitor the battery's status (voltage, state of charge, temperature, etc.) via the Expion360 SmartTalk™ app.

It is equipped with Oversized Brass Terminals. These are designed to handle high amperage with minimal resistance and heat buildup, improving safety and efficiency.

The battery has an IP55 rating, which protects it against dust ingress and low-pressure water jets from any direction. It is suitable for wet environments but should not be submerged.

Installation & Safety

The EX1 features an Integrated Mounting System. The case is designed with built-in tie-down points or feet that work with Expion360's mounting kits to securely fasten the battery to your RV or vessel floor.

Yes. It features an Advanced Battery Management System (BMS) that protects against short circuits, overcurrent, and high/low voltage. The battery is UL1973 compliant (system-level safety) and uses UL1642 recognized cells.

Absolutely. It is specifically engineered for high-demand applications such as RVs, overland vehicles, marine vessels, and off-grid cabins where maximizing power in a limited space is critical.

12V 368Ah LiFePO4 Lithium Battery – EX1, Bluetooth | Expion360