KickAss Smart 12V 300Ah Ultra-X Lithium Bundle with Shunt, Wiring & Fuse

The KickAss Smart 12V 300Ah Ultra-X Lithium Compact Deep Cycle Battery LiFePO4 is the first battery in the second series of our premium Ultra-X range, building on everything customers already love. This second series introduces a new look along with key upgrades including an IP65-rated enclosure, integrated Low Voltage Recovery (LVR) button, and supports AS/NZS 3001.2 compliant installations. It's the next evolution of KickAss Ultra-X Lithium Batteries, delivering the same premium performance with even more capability.

With 300Ah of usable capacity and a 300A continuous discharge, it's built to power demanding off-grid setups, making it the ideal battery to pair with a 3000W inverter for running fridges, induction cooktops, coffee machines, power tools, lighting and other 12V and 240V appliances at the same time. This high-performance 12V lithium battery gives you more power without taking up valuable space.

Its compact form factor opens up installation options that simply aren't possible with many large-capacity batteries. Mount it neatly beneath caravan beds or bench seats, inside ute tubs under roller covers, within canopies or in camper trailers. A built-in vent means that the battery supports AS/NZS 3001 compliant installations, while the rugged metal housing, IP65 rating and intelligent Battery Management System ensure reliable performance in harsh Australian conditions.

Bluetooth monitoring lets you check battery status, capacity, voltage, temperature and current directly from your smartphone, while the optional Remote Display provides the same information for those who prefer a dedicated screen. If you accidentally run your battery too flat, then the integrated Low Voltage Recovery (LVR) button makes it easy to reawaken the BMS after an over-discharge, helping you get back on the road with the touch of a button.

As your power needs grow, your battery system can grow with them. Connect up to four Ultra-X 300Ah lithium batteries in series or parallel to create a powerful battery bank, then monitor the entire system through the KickAss app or Remote Display without needing an external shunt. The KickAss Ultra-X 300Ah LiFePO4 Battery delivers a cleaner, simpler and smarter way to build a scalable off-grid power system.

The KickAss Smart Monitor Lite Shunt + Tank Sensor is a powerful, easy-to-use solution for monitoring your off-grid power and water systems. Designed for touring rigs, caravans and 4WD setups, it gives you clear, reliable insight into how your battery bank is performing, how long you can keep running your gear, and when it’s time to recharge or top up the tank.

At the heart of the system is a high-capacity 600A shunt that accurately measures charge and discharge current, battery voltage and State of Charge. This allows you to understand exactly what’s happening inside your battery bank, helping you manage power more efficiently and avoid unexpected shutdowns when running fridges, lighting, inverters and other essential off-grid equipment. As loads and charging sources change, the system continuously provides real-time calculations and updates how long your battery has left to run or how long it will take to recharge. This takes the guesswork out of power management and makes it easier to plan your usage while travelling off-grid.

The Smart Monitor Lite can also connect to your tank sensor or sender, allowing you to monitor both your battery data and water level from a single unit. It’s compatible with resistive and voltage-type tank senders and can be calibrated to suit virtually any tank size or shape.

Monitoring and setup are simple thanks to Bluetooth connectivity and the dedicated mobile app. View real-time voltage, current, power and State of Charge from your smartphone, configure battery and tank settings, and review historical performance data whenever you need it. For quick checks without reaching for your phone, the colour LCD remote display provides clear, at-a-glance system information right where you want it.

Installation and configuration are straightforward, even for more complex setups. The intuitive app interface guides you through setup with clear menus and prompts, making it easy to tailor the system to your specific battery chemistry and capacity. The shunt supports AGM, lithium and other common battery types, from small single-battery systems through to large dual-battery lithium banks.

Integrated data logging records voltage, current and temperature for up to 35 days, allowing you to review power usage trends over the course of a trip. With a wide input voltage range and flexible power options, the unit can be powered directly from the battery or an external supply and used with battery banks of any voltage. For added control and protection, the external relay output allows you to automate system behaviour based on voltage, current, power or temperature.

This 3-pin Anderson-style connector with built-in ignition wire makes connecting your 12V dual battery system easy. Perfect for wiring DC/DC chargers, battery boxes & auxiliary batteries.  

The KickAss 600A Smart Shunt Power Connections Kit is the perfect companion to your KickAss 600A Smart Shunt with Battery & Tank Monitor, designed to make installation quick, clean and easy. This purpose-built kit includes the main heavy-duty negative connection between your battery and shunt, along with the smaller positive and negative power cables required to run the shunt itself. With everything sized correctly and ready to go, it eliminates guesswork and ensures your monitoring system is powered safely and accurately from day one.

Built for serious off-grid and touring setups, the kit features a rugged 95mm² negative hookup cable designed to handle high-current loads with minimal voltage drop. Whether you're running a lithium battery bank, dual battery system or high-draw accessories, these cables deliver dependable performance in harsh environments. By using the correct cabling for your shunt installation, you'll get more accurate readings, improved reliability and a cleaner, more professional finish to your power system.

KickAss MAXI Fuse Anderson Cable

The KickAss MAXI Fuse Anderson Cable is the perfect solution for connecting a battery to virtually any device. It offers superior circuit protection through an inline 80A MAXI Fuse, safeguarding against short circuits and potential system damage.

With a purpose-designed length, this cable easily reaches vehicle starting batteries and integrates seamlessly with dual battery setups. The built-in weatherproof MAXI Fuse holder simplifies installation, eliminating the need for mounting traditional fuse holders or circuit breakers.

One end of the cable features a 50 Amp Anderson style connector for effortless connection to battery boxes, solar panels, or other compatible devices. The other end includes high-quality 8mm ring terminals for secure battery attachment. A spare 80A MAXI Fuse is included for added convenience.

Features:

• In-line weatherproof MAXI Fuse holder with 80A MAXI Fuse
• Length: 750mm
• Cable type: Twin 8B&S (7.71mm²) Red/Black Sheathed
• 1 x 80A MAXI Fuse pre-installed in holder
• 1 x 80A MAXI Fuse spare
• 8mm ring terminals

See links below for replacement fuses:

Spare 50A MAXI Fuse - Red