Ultra Slim 100Ah LiFePO4 Battery | 180A BMS

🔋 CUSTOM LITHIUM ULTRA SLIM 100AH LiFePO4 BATTERY – AUSTRALIAN MADE

100Ah • 12.8V LiFePO4 • 180A Continuous Discharge • Only 55mm High • Active Balancing • 7 Year Warranty

The Custom Lithium Ultra Slim 100Ah Battery is designed for auxiliary power systems where available installation space is extremely limited.

At just 55mm high, its ultra-slim aluminium enclosure makes it ideal for mounting behind seats, beneath false floors, inside canopy walls and in other tight spaces where a conventional battery simply will not fit.

Built in Brisbane using premium A-grade automotive LiFePO4 cells, the battery combines a high-current Heltech BMS, active cell balancing and a lightweight aluminium enclosure with a stated 180A continuous discharge capability.

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⭐ KEY FEATURES

📏 Only 55mm High
The ultra-slim design allows the battery to fit into spaces that are unsuitable for conventional lithium battery housings.

🔋 100Ah LiFePO4 Capacity
Provides practical auxiliary energy storage for touring vehicles, canopies, caravans and compact off-grid systems.

⚡ 180A Continuous Discharge
High-current output 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 conditions including overheating, over-discharge and short-circuiting.

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

🛡️ Lightweight Aluminium Enclosure
The custom aluminium case reduces overall battery 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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📐 DESIGNED TO FIT WHERE OTHER BATTERIES CAN'T

The Ultra Slim range is purpose-built for compact vehicle and caravan installations.

With overall dimensions of 530mm L × 305mm W × 55mm H, it can suit installations such as:

• Behind vehicle seats
• Under false floors
• Inside canopy walls
• Under storage compartments
• Compact caravan & RV installations
• Custom 4WD auxiliary power systems

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🚐 POWER YOUR OFF-GRID EQUIPMENT

The 100Ah Ultra Slim battery can form the foundation of a compact 12V system powering compatible equipment such as:

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

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🔋 PREMIUM LiFePO4 CELL TECHNOLOGY

The battery is manufactured 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 chemistry for demanding off-grid and vehicle applications where safety, reliability and performance are important.

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📊 TECHNICAL SPECIFICATIONS

Capacity: 100Ah

Nominal Voltage: 12.8V

Continuous Discharge: 180A

Peak Discharge / Protection: 800–1000A as specified by manufacturer

Recommended Charge Current: 50A

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: M8

Overall Dimensions: 530mm L × 305mm W × 55mm H

Weight: Approx. 13.5kg

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 180A continuous discharge capability gives this 100Ah battery strong current capability for its compact dimensions.

This can make it suitable for appropriately designed inverter systems, but the complete installation must still be engineered around actual inverter DC current, surge demand, cable size, fuse protection, connection quality and BMS limits.

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🔌 CHARGING REQUIREMENTS

The supplied specifications recommend a charge current of up to 50A.

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

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

Compatible 25A, 30A or 40A DC-DC chargers can also be used, with recharge time varying according to charger output and battery state of charge.

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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 55mm-high design makes it suitable for tight areas such as behind seats, underneath false floors, inside canopy walls and other compact auxiliary battery locations.

Can I replace an AGM battery with this lithium battery?

Potentially, but your existing charging equipment must be compatible with LiFePO4 batteries. Check your DC-DC charger, solar regulator and 240V charger before changing from AGM to lithium.

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 50A. Compatible 25A, 30A or 40A chargers can also be used, but recharge time will vary depending on charger output.

Can this battery run an inverter?

Yes. The stated 180A continuous discharge capability makes it suitable for appropriately designed inverter systems. Actual inverter suitability depends on DC current demand, surge requirements, cable sizing, fusing and the complete installation.

How do I restart the battery after a low-voltage 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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🔋 100AH OF LITHIUM POWER IN AN ULTRA-SLIM 55MM PACKAGE

With 100Ah of capacity, 180A continuous discharge capability, active balancing and an aluminium enclosure only 55mm high, the Custom Lithium Ultra Slim 100Ah is built for installations where every millimetre of space counts.

Compact installation. High-current performance. Australian made.