Ultra Slim 310Ah LiFePO4 Battery | 330A BMS

🔋 CUSTOM LITHIUM ULTRA SLIM 310AH LiFePO4 BATTERY – AUSTRALIAN MADE

310Ah • 12.8V LiFePO4 • 330A Continuous Discharge • Only 86mm High • Active Balancing • 7 Year Warranty

The Custom Lithium Ultra Slim 310Ah Battery delivers serious off-grid capacity in an ultra-low-profile format designed for installations where conventional batteries take up too much space.

At only 86mm overall height, its aluminium enclosure is suited to low-profile locations such as beneath false floors, inside canopy walls, behind suitable vehicle seats and other compact caravan, RV and 4WD installations.

Built in Brisbane using premium A-grade automotive LiFePO4 cells, it combines a high-current Heltech BMS, active cell balancing and a lightweight aluminium enclosure with a stated 330A continuous discharge capability.

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⭐ KEY FEATURES

📏 Only 86mm High
The ultra-slim design provides 310Ah of lithium capacity while keeping installation height to just 86mm overall.

🔋 310Ah LiFePO4 Capacity
Substantial energy storage for larger touring, caravan, RV and off-grid auxiliary systems.

⚡ 330A Continuous Discharge
High-current capability supports demanding 12V equipment and appropriately designed inverter installations.

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

🧠 High-Current Heltech BMS
The battery management system helps safeguard against overheating, over-discharge and short-circuit conditions.

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

🛡️ Lightweight Aluminium Enclosure
The custom aluminium housing reduces unnecessary bulk while helping protect the internal cells and components.

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

🧪 Individually Bench Tested
Each battery is individually bench 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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📐 310AH FOR LOW-PROFILE INSTALLATIONS

The Ultra Slim range is designed for installations where available battery height is restricted but substantial energy capacity is still required.

With overall dimensions of 620mm L × 373mm W × 86mm H, the 310Ah model can suit applications such as:

• Under false floors
• Inside canopy walls
• Behind suitable vehicle seats
• Under storage platforms
• Custom 4WD auxiliary systems
• Caravan & RV battery installations

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🚐 BUILT FOR HIGH-CAPACITY OFF-GRID POWER

With 310Ah of lithium capacity, this battery can form the foundation of a substantial touring or off-grid electrical system.

It can support compatible equipment including:

• ❄️ 12V fridges & freezers
• 💡 Camp & vehicle lighting
• 📡 Starlink
• 💻 Computers & electronics
• 📷 Cameras & charging equipment
• 💨 Air compressors
• 🛠️ Compatible tools & battery chargers
• 🔌 240V appliances through a suitable inverter
• 🍳 Induction cooking through an appropriately designed inverter system

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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 vehicle and off-grid applications where safety, reliability and performance are important.

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📊 TECHNICAL SPECIFICATIONS

Capacity: 310Ah

Nominal Voltage: 12.8V

Continuous Discharge: 330A

Peak Discharge / Protection: 1060–1600A as specified by manufacturer

Recommended Charge Current: 100A

Charge Voltage: 14.2–14.6V

Absorption / Float Voltage: 13.4–13.6V

Low-Voltage Cut-Off: 10.5V

Operating Temperature: 0°C to 60°C

Terminals: M10

Overall Dimensions: 620mm L × 373mm W × 86mm H

Weight: Approx. 27kg

Battery Chemistry: LiFePO4

BMS: Heltech High-Current BMS

Cell Balancing: Active Balancer

Enclosure: Aluminium

Warranty: 7 Years

Manufactured: Brisbane, Australia

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⚡ HIGH-CURRENT PERFORMANCE

The stated 330A continuous discharge capability gives the 310Ah Ultra Slim substantial current capacity for demanding auxiliary systems.

This makes it suitable for appropriately designed high-power inverter installations, but actual inverter compatibility depends on DC current demand, surge requirements, cable sizing, fuse protection, connection quality and BMS limits.

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🔌 CHARGING REQUIREMENTS

The supplied specifications recommend a charge current of up to 100A.

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

If your charger provides a LiFePO4 profile matching these voltage requirements, that setting can be used.

Compatible lower-output DC-DC chargers such as 25A, 30A or 40A units can also be used, although recharge times will be considerably longer with a 310Ah battery.

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🇦🇺 AUSTRALIAN MADE

Custom Lithium states that its Ultra Slim 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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📋 STANDARDS & COMPONENT COMPLIANCE

Custom Lithium states that its batteries are manufactured using IEC 62619-certified components and meet the recommendations of AS/NZS 3001.

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❓ QUICK FAQ

Where can the 310Ah Ultra Slim battery be installed?

Its 86mm-high design makes it suitable for low-profile spaces such as beneath false floors, inside canopy walls and other compact auxiliary battery locations where sufficient length and width are available.

Can I replace an AGM battery with this lithium battery?

Potentially, but your complete charging system must be lithium compatible. Check your DC-DC charger, solar regulator and 240V charger to ensure they support the required LiFePO4 charging profile before changing from AGM.

What charging profile should I use?

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

What size DC-DC charger can I use?

The stated recommended charge current is up to 100A. Smaller compatible chargers such as 25A, 30A or 40A units can also be used, but recharge time will increase significantly with a 310Ah battery.

Can this battery run an inverter?

Yes. The stated 330A continuous discharge capability makes it suitable for appropriately designed high-current inverter systems. Actual inverter suitability depends on DC current demand, surge requirements, cable sizing, fuse protection and the complete electrical installation.

How do I restart the battery after a low-voltage BMS shutdown?

The supplied instructions describe using a lithium-compatible 240V charger with an appropriate power-supply mode to wake the BMS. Battery and charger manufacturer instructions should be followed during recovery.

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🔋 310AH OF LITHIUM POWER IN AN ULTRA-SLIM 86MM PACKAGE

With 310Ah of capacity, 330A continuous discharge capability, active balancing and an aluminium enclosure only 86mm high, the Custom Lithium Ultra Slim 310Ah delivers serious off-grid capacity for installations where conventional battery height is not an option.

Maximum capacity. Ultra-slim installation. Australian made.