Ultra Slim 200Ah LiFePO4 Battery | 330A BMS

🔋 CUSTOM LITHIUM ULTRA SLIM 200AH LiFePO4 BATTERY – AUSTRALIAN MADE

200Ah • 12.8V LiFePO4 • 330A Continuous Discharge • Only 66mm High • Active Balancing • 7 Year Warranty

The Custom Lithium Ultra Slim 200Ah Battery is designed for high-capacity auxiliary power systems where conventional batteries simply take up too much space.

At only 66mm high, its ultra-slim aluminium enclosure makes it ideal for mounting behind seats, beneath false floors, inside canopy walls and in other tight vehicle, caravan or RV 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 66mm High
The ultra-slim design allows 200Ah of lithium capacity to be installed into spaces that are unsuitable for conventional battery housings.

🔋 200Ah LiFePO4 Capacity
Provides substantial energy storage for touring vehicles, canopies, caravans, RVs and larger off-grid 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 protect against overheating, over-discharge and short-circuit conditions.

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

🛡️ Aluminium Enclosure
The custom aluminium enclosure reduces bulk while protecting the internal cells and battery 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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📐 DESIGNED FOR TIGHT INSTALLATION SPACES

The Ultra Slim range is specifically designed for installations where usable floor or storage space is at a premium.

With overall dimensions of 620mm L × 373mm W × 66mm H, the 200Ah model can suit installations such as:

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

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🚐 BUILT FOR SERIOUS OFF-GRID POWER

With 200Ah of lithium capacity and strong discharge capability, this battery can form the foundation of a substantial 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 built using A-grade automotive LiFePO4 cells, combined with a high-current BMS and active cell balancing.

The supplied product information positions LiFePO4 as a suitable battery chemistry for demanding off-grid and vehicle applications where safety, reliability and performance are important.

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📊 TECHNICAL SPECIFICATIONS

Capacity: 200Ah

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 × 66mm H

Weight: Approx. 22kg

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 200Ah Ultra Slim substantial current capacity for larger 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 25A, 30A or 40A DC-DC chargers can also be used, although recharge times will be longer with a 200Ah 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 Ultra Slim battery be installed?

Its 66mm-high design makes it suitable for tight areas such as behind seats, underneath 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 lithium 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 recommended charge current is up to 100A. Smaller compatible chargers such as 25A, 30A or 40A units can also be used, but will take longer to recharge the 200Ah 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 current demand, surge requirements, cable sizing, fusing 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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🔋 200AH OF LITHIUM POWER IN AN ULTRA-SLIM 66MM PACKAGE

With 200Ah of capacity, 330A continuous discharge capability, active balancing and an aluminium enclosure only 66mm high, the Custom Lithium Ultra Slim 200Ah is built for high-capacity systems where installation height is extremely limited.

High capacity. Ultra-slim installation. Australian made.