Caravan & RV 400Ah LiFePO4 Battery | 380A BMS

🔋 CUSTOM LITHIUM CARAVAN & RV 400AH LiFePO4 BATTERY – AUSTRALIAN MADE

400Ah • 12.8V LiFePO4 • 380A Continuous Discharge • 130A Recommended Charge • 37.5kg • 7 Year Warranty

The Custom Lithium Caravan & RV 400Ah Battery is built for high-demand off-grid systems where serious capacity, high-current performance and reliability are required.

Designed for caravans, motorhomes, 4WDs and off-grid installations, this 400Ah battery can support substantial 12V systems and appropriately designed inverter setups powering equipment such as air conditioning, refrigeration, Starlink, coffee machines, induction cooking and washing machines.

Built in Brisbane using premium A-grade automotive LiFePO4 cells, it combines a modified Heltech BMS, active cell balancing and a high-strength ABS and aluminium enclosure with a stated 380A continuous discharge capability.

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⭐ KEY FEATURES

🔋 Massive 400Ah LiFePO4 Capacity
Provides substantial stored energy for larger caravan, motorhome and off-grid electrical systems.

⚡ 380A Continuous Discharge
High-current capability supports demanding DC loads and appropriately engineered high-power inverter systems.

🇦🇺 Australian Made
Built in Brisbane and supplied as a certified Australian Made product.

🧠 Modified Heltech BMS
The integrated BMS helps protect against overheating, over-discharge and low-temperature charging conditions.

⚖️ Active Cell Balancing
The active balancer helps manage individual cells and maintain consistent battery performance.

🔋 A-Grade Automotive LiFePO4 Cells
Built using premium lithium iron phosphate cells selected for demanding auxiliary and off-grid applications.

🛡️ ABS & Aluminium Enclosure
The custom high-strength housing is designed to protect the internal battery components while maintaining a compact overall footprint.

🚙 Built for Touring & Corrugations
Internal components are insulated against vibration to help protect the battery during remote-area travel and rough-road use.

🧪 Individually Bench Tested
Each battery is individually tested before supply as part of Custom Lithium's quality-control process.

🛡️ 7 Year Warranty
Backed by a full 7-year manufacturer warranty.

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🚐 BUILT FOR HIGH-DEMAND CARAVAN & RV SYSTEMS

The 400Ah Caravan & RV battery is designed for customers who want to spend longer away from powered sites while continuing to run higher-demand equipment.

It can form the foundation of a system powering compatible equipment such as:

• ❄️ 12V fridges & freezers
• ❄️ Air conditioning through a suitably designed inverter system
• 📡 Starlink
• 🍳 Induction cooking
• ☕ Coffee machines
• 🧺 Washing machines
• 💨 Air compressors
• 🛠️ Tools & battery chargers
• 💡 Caravan & camp lighting
• 🔌 Compatible 240V appliances through an appropriately sized inverter

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🔋 PREMIUM LiFePO4 CELL TECHNOLOGY

The battery is constructed using A-grade automotive LiFePO4 cells, combined with a high-current BMS and active cell balancing.

The supplied product information describes LiFePO4 as a suitable chemistry for demanding caravan and off-grid environments where safety, reliability and performance are important.

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📊 TECHNICAL SPECIFICATIONS

Capacity: 400Ah

Nominal Voltage: 12.8V

Continuous Discharge: 380A

Peak Discharge / Protection: 1200–1600A as specified by manufacturer

Recommended Charge Current: 130A

Charge Voltage: 14.2–14.6V

Absorption / Float Voltage: 13.4–13.6V

Low-Voltage Cut-Off: 10.5V

Operating Temperature: 0°C to 65°C

Terminals: M10

Battery Body Dimensions: 406 × 235 × 262mm

Overall Dimensions: 456mm L × 235mm W × 262mm H

Weight: Approx. 37.5kg

Battery Chemistry: LiFePO4

BMS: Modified Heltech High-Current BMS

Cell Balancing: Active Balancer

Enclosure: High-Strength ABS & Aluminium

Warranty: 7 Years

Manufactured: Brisbane, Australia

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⚡ HIGH-CURRENT PERFORMANCE

The stated 380A continuous discharge capability gives the 400Ah battery substantial current capacity for large caravan and RV electrical systems.

This makes it suitable for appropriately designed high-power inverter systems, but actual inverter compatibility must still be assessed against inverter current demand, surge requirements, battery state of charge, cable size, fuse ratings, connection quality and BMS limits.

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🔌 CHARGING REQUIREMENTS

The supplied specifications recommend a charge current of up to 130A.

• Bulk / Charge Voltage: 14.2–14.6V
• Absorption / Float Voltage: 13.4–13.6V

Compatible lower-output chargers can also be used, but charging times will increase substantially with a 400Ah battery.

Your DC-DC charger, solar controller and 240V charger should all be configured for the battery's required LiFePO4 charging profile.

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📐 COMPACT HIGH-CAPACITY DESIGN

Despite its 400Ah capacity, the battery has stated overall dimensions of 456mm L × 235mm W × 262mm H.

This makes it suitable for caravan, motorhome and custom off-grid installations where substantial capacity is required but available battery space remains limited.

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🇦🇺 AUSTRALIAN MADE

Custom Lithium states that its Caravan & RV batteries are Australian Made and built in Brisbane.

Each battery is individually bench tested before supply and backed by a 7-year manufacturer warranty.

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🛠️ INSTALLATION

Due to the high-current capability of this battery and the potential use of large inverter systems, professional installation is recommended.

⚠️ Custom Lithium recommends installation by a qualified auto electrician. Correct cable sizing, fusing, isolation, mounting and charging configuration are essential for safe system operation.

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❓ QUICK FAQ

Can I replace an AGM battery bank with this 400Ah lithium battery?

Potentially, but your complete charging system must be lithium compatible. Check your DC-DC charger, solar regulator, 240V charger and other connected equipment before changing from AGM to LiFePO4.

What charging profile does the battery require?

The supplied specifications call for a 14.2–14.6V charge voltage and 13.4–13.6V absorption/float voltage.

What charge current is recommended?

The stated recommended charge current is 130A. Lower-output compatible chargers may also be used, but will take longer to recharge the 400Ah battery.

Can this battery run air conditioning or induction cooking?

It can be used as part of an appropriately engineered inverter system powering high-demand appliances. Actual runtime and compatibility depend on appliance wattage, inverter efficiency, surge demand and the complete electrical system.

Can it run a large inverter?

The stated 380A continuous discharge capability provides substantial current availability. Suitable inverter size still depends on continuous DC current, surge demand, cable sizing, fuse protection and BMS limits.

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🔋 400AH OF SERIOUS OFF-GRID POWER – BUILT FOR CARAVANS & RVS

With 400Ah of lithium capacity, 380A continuous discharge capability, active balancing, a modified Heltech BMS and Australian manufacture, the Custom Lithium Caravan & RV 400Ah is designed for high-demand systems built to spend serious time away from mains power.

More capacity. More capability. Built for serious Australian touring.