Exotronic 12V 300Ah JK Smart Bluetooth Lithium Battery

Ultra High Energy Density Lithium

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Exotronic 12V 300Ah JK Series Smart Deep Cycle LiFePO4 Lithium Battery with Bluetooth and On/Off Button

300Ah JK Series Expansive Features Include:

  • Sleek, Space-Saving Profile
  • Real Time Bluetooth Monitoring
  • IP66 Water Resistance and Dustproof
  • On/Off Button
  • JK BMS with 2A Active Balancer
  • A Grade Aluminium-cased Prismatic Cells featuring Safety Rupture Disc
  • 0-100% Useable Capacity
  • IEC 62619 Certified Cells

Proudly Australian Made: A Commitment to Quality and Innovation

Crafted with precision and pride on Australian soil, the Exotronic 12V 300Ah JK Series Smart Deep Cycle LiFePO4 Lithium Battery represents the pinnacle of local manufacturing excellence. This product showcases the innovative spirit of Australian engineering, our commitment to quality, safety, and environmental responsibility. Designed to meet the diverse demands of both adventure and reliability, each battery integrates globally recognized safety standards with robust, homegrown ingenuity. By choosing Exotronic, you're supporting Australian innovation and contributing to a sustainable future, all while ensuring your energy needs are met with world-class performance tailored for Australia's unique landscapes and conditions.

Versatile Applications for Every Need

  • Ideal for Travel and Adventure: Exotronic Lithium Batteries are a perfect match for Caravans, RVs, and 4x4 vehicles. Whether you're hitting the road or exploring off the beaten path, these batteries provide reliable power to keep your journey going.
  • Marine-Grade Durability: Boaters will appreciate the robust design. Our batteries have undergone rigorous vibration testing and are machine-sealed for optimal waterproofing, making them an excellent choice for marine environments where reliability is key.
  • Reliable Backup Power: Ideal for emergency power solutions, these batteries ensure that your critical systems stay operational when you need them most. They're perfect for home backup systems, ensuring peace of mind during power outages.
  • A Trustworthy Choice for Rugged Conditions: Their durability makes them particularly suited for off-road applications, where resilience against harsh conditions is essential.

Not Designed for Engine Starting: Please note that these batteries are not intended for under-bonnet applications or as cranking/starting batteries. Their strengths lie in providing steady, reliable power in stationary or mobile applications, where endurance and resilience are crucial.

Ultra-Compact Powerhouse Design

Despite its compact footprint, this battery packs a powerful punch, offering 300Ah of dependable energy storage and up to 250A discharge, perfect for a powerful 3000W inverter. Perfect for space-conscious setups without compromising on performance.

Unmatched Safety Standards

  • Inherently Safe Battery Chemistry: Our batteries use LiFePO4, one of the safest lithium technologies available. This ensures exceptional safety against a wide range of potential hazards including over-discharge, over-charge, short-circuits, physical impacts, extreme temperatures, and even in rare cases like nail penetration or seawater immersion.
  • Robust and Durable Casing: Each battery is encased in heavy-duty ABS plastic, designed to withstand tough conditions and safeguard the internal components, enhancing both durability and safety.
  • Advanced Pressure Release System: The cells in our batteries are equipped with rupture discs. In the unlikely event of an internal failure, these discs relieve pressure, preventing any risk of high-pressure build-up and ensuring the highest safety standards.
  • Protection Against Overcharging: One of the most common causes of lithium battery fires is overcharging. Our Exotronic Battery Management System (BMS) is specifically designed to prevent this, ensuring your battery remains safe and operational under all conditions.

Comprehensive BMS Protections:

  • Overcurrent in Discharge and Charge: Safeguards against excessive current that can damage the battery.
  • Short Circuit Protection: Immediate response to any short circuit incidents for enhanced safety.
  • Temperature Regulation: Monitors and manages extreme high and low temperatures to prevent damage.
  • Voltage Control: Maintains optimal cell voltage, preventing overcharge and overdischarge, ensuring the longevity and safety of the battery.

Reliability You Can Trust

Our batteries are not just reliable; they're built to ensure your peace of mind. We use top-tier A Grade prismatic aluminium-cased LiFePO4 cells, known for their stability and longevity.

Active Balancing

Traditional balancers address voltage differences on a cell-to-cell basis, which might seem sufficient at first glance. However, this method can overlook the cumulative impact of these small differences across the entire battery pack. For instance, a seemingly minor difference between each cell can add up to a substantial discrepancy across a four-cell pack. This level of imbalance, if not properly managed, can significantly impact the battery's performance and longevity.

Expand Your Power with Parallel Connection

Easily scale up your power storage by connecting up to 4 batteries in parallel. This flexibility allows you to tailor your energy reserves to meet your specific needs, ensuring you have the power you need, when you need it.

Maintenance Made Simple

Our LiFePO4 batteries are designed for hassle-free storage. With no memory effect, they maintain their efficiency over long periods of inactivity. To keep them in peak condition, all they require is a charge once every 3 months – a minimal maintenance effort for maximum reliability.

Exceptional Lifespan for Lasting Performance

Engineered to endure, these cells are built to last up to 3,000 full discharge cycles. That means it can last an impressive lifespan of 10-12 years or more in many applications, providing you with a long-term energy solution that's not just reliable, but also cost-effective over time.

Intuitive On/Off Button for Easy Control

  • Simple Activation: To power up your battery, simply hold the on/off button for 5 seconds. The button LED will remain illuminated while on. This intuitive design ensures you can easily turn on the battery whenever needed.
  • Effortless Shutdown: Turning off the battery is just as straightforward – press the button for 5 seconds. This feature adds an extra layer of safety, allowing you to quickly power down the system.

Bluetooth Smart

The JK BMS includes Bluetooth, allowing real time viewing of the individual cell voltages, battery temperature, current, state of charge, state of the charge/discharge MOSFETs and alarms.

Exotronic BMS App on the Android Play StoreExotronic BMS App on the Apple App Store

Experience the Future of Power Storage Today!

Upgrade to the Exotronic 12V 300Ah JK Series Smart Deep Cycle LiFePO4 Lithium Battery for unparalleled performance and reliability. Perfect for a wide range of applications, from adventurous off-roading to dependable marine use. Empower your adventures with Exotronic's cutting-edge technology!

Introducing the Feature Packed Exotronic Lithium Batteries for Caravans and 4x4

Discover the game-changing lithium battery designed specifically for caravan and 4x4 enthusiasts...



Battery Capacity


Battery Nominal Voltage


Maximum Discharge Current (30 minutes)


Peak Current (1s)


Trip Current (300s)


Maximum Inverter Size (Single Battery)


Maximum Number of Parallel Batteries

See manual for acceptable wiring

4 of the same model

Maximum Number of Series Batteries

See manual for acceptable wiring

4 of the same model

Low Voltage Trip


High Voltage Trip


Balance Current










Mounting Orientation

Upright or long sides down

Nominal Continuous Charge Current


Maximum Continuous Charge Current


Absorption Voltage

14.0 - 14.2V

Float Voltage


Cycle Life (0.3C)

>3000 100% cycles at 25C

to 70% Capacity within 5 years

Case Material



M8 Bolt - 10mm depth

Terminal Torque

14Nm Max (12Nm Recommended)

Capacity Measurement

14.6V to 10V at 0.3C at 25C

Operating Temperature Charging

Operating Temperature Discharging

Operating Temperature Storage

5C – 45C  

-20C – 55C

-20C – 60C

Ideal Storage Conditions

25C, 40% SoC (approx. 13V)

Battery Ventilation Required

10mm Clearance on all sides

SKU Exo-Li-300-jk
MPN # Exo-Li-300-jk

Warranty Statement

Exotronic warrants its lithium batteries, to be free of defects in workmanship and materials and be equal to or greater than 70% of rated capacity for a period of 60 months from the date of the authorised dealer's invoice to the original purchaser. This warranty is applicable for mobile and marine applications, provided that:

  • The product is correctly installed and used under normal operating conditions for which it was intended.
  • The battery does not exceed rated cycles
  • All warranty claims are received by an authorised Exotronic Dealer and approved by Exotronic.

Exotronic reserves the right to repair, replace, refund, or compensate for any decrease in value due to a defect.

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