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Power your adventures with the KickAss 12V 300Ah Ultra-X Lithium Dual Battery Premium Kit, providing reliable off-grid energy with a smart DCDC charger.
Everything that is included in this KickAss kit!
The first release in the new Series 2 Ultra-X battery range, this 300Ah lithium power house packs 300Ah of usable capacity into a compact design that can be installed anywhere from under beds in caravans to the back of ute tubs. Connect up to four in parallel or series & monitor the entire battery bank remotely via Bluetooth – no external shunt required. Supports AS/NZS:3001 compliance.
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.
Charge your dual battery system fast with this 40A DCDC Charger. Ideal for lithium & lead acid batteries, it suits medium to large setups. Solar MPPT, Bluetooth, lithium wakeup, and multi-stage charging – all in a tough, IP66-rated, plug & play unit built for Aussie conditions. Note this charger requires the KickAss Heavy Duty Wiring Kit or 6AWG cable from the starter battery.
Powerful 40A Dual Battery Charging
With a high 40A output, this charger is perfect for keeping larger lithium and lead acid battery systems topped up and ready for action. It ensures fast, safe charging for demanding off-road or touring applications.
Bluetooth Monitoring & App Control
Connect your charger to your smartphone via Bluetooth to monitor performance in real time. The KickAss App gives you complete visibility over charging status, voltages, current flow, and system alerts – all from your pocket.
Simple Plug & Play Installation
Thanks to Anderson-style connectors, installation is quick and hassle-free with no complex wiring required. It’s designed for DIY setups and easy integration into your existing system.
Dual Input: Alternator & Solar Charging
Charge from your vehicle’s alternator while driving or connect a solar panel when stationary – this charger handles both. Its built-in MPPT solar regulator ensures maximum efficiency when using solar input.
Built for Aussie Conditions
Rated IP66, the KickAss 40A DCDC Charger is waterproof, dustproof, and rugged enough to handle corrugated tracks, extreme heat, and remote adventures. It’s built tough for Australian conditions.
Compatible with 12V & 24V Alternators
Highly versatile, this charger is compatible with both 12V and 24V alternators, making it suitable for a wide range of vehicle types including trucks, commercial vehicles, and 4WDs.
Adjustable Max Input Current – Hybrid Compatible
The maximum input current can be configured via the Bluetooth app, allowing the charger to limit the draw from your vehicle’s alternator, without reducing the maximum charge current when charging from solar. This makes it ideal for some hybrid vehicles or those with low-output alternators, helping prevent overload and ensuring stable, efficient charging without placing strain on your electrical system.
Smart Alternator Ready
Modern vehicles with smart alternators are no problem. The unit supports both smart and fixed-voltage alternators and includes an ignition trigger wire to start or stop charging based on engine status.
Lithium Battery Compatible
Fully lithium-ready, this charger includes an automatic lithium wakeup function that can safely restore LiFePO4 batteries from low voltage protection or sleep mode – no manual intervention needed.
Advanced Multi-Stage Charging
Precision charging algorithms help extend the life of your auxiliary battery. The charger delivers multi-stage charging tailored to the battery type, helping maintain peak performance over the long haul.
Starter Battery Isolation
To protect your starting battery, the charger only delivers current to your auxiliary battery when the engine is running, and automatically disconnects when the vehicle is off – eliminating unwanted drain.
Supports Multiple Battery Chemistries
Whether you’re using lithium, AGM, wet, gel, or calcium batteries, this charger has you covered. It’s a versatile solution designed to support a wide range of battery types.
Perfect for 4WDs, caravans, camper trailers, and off-grid touring setups, the KickAss 40A DCDC Charger with Solar MPPT and Bluetooth delivers intelligent charging for serious adventurers.
Charge 10 different devices at once, with 6x USB ports, 2x 12V cig sockets, and 2x Anderson-style input/outputs. An ideal portable power supply for phones, tablets and 12V appliances. Note: This control box is only compatible with KickAss Smart or Ultra-X batteries.
Power up to 10 Devices Simultaneously
The KickAss 12V Mini Power Box distributes power from your auxiliary battery to up to 10 different devices at once. Built with 6 x USB ports, 2 x 12V cigarette sockets, and 2 x Anderson input/output ports, it can power phones, tablets, 12V fridges, ovens, vacuum sealers, projectors, and more.
4 x USB Ports Featuring USB-C & QC3 Ports
Enjoy fast charging with USB-C and QC3 (Quick Charge 3.0) ports. Charge up to 6 USB devices simultaneously—perfect for phones, tablets, and other devices.
2 x Anderson Input/Outputs – Charge from Solar
Use the Anderson connectors to run 12V appliances or charge your auxiliary battery from regulated solar panels with quick-connect convenience.
Built-in 3-Stage LED Light
Includes a handy 3-stage LED light—ideal when you need illumination in a pinch and can’t find your torch or phone.
Multiple Mounting Options
Two convenient mounting points make it easy to install in your canopy, camper, or caravan.
Anti-Slip Rubber Feet
Rubber feet prevent the box from sliding and protect surfaces from scratches.
Protective Dust Cover & Anderson Cable Cover
Protect your ports with the USB dust cover and safeguard your Anderson cable from dust and disconnection with the protective end cover.
Warning: A battery must be connected before connecting a regulated solar panel. Disconnect the panel before disconnecting the battery. Failure to follow this may void your warranty.
Note: This unit is not waterproof and should not be mounted outside. It is not a standalone power source—must be connected to a battery or power supply.
Product Compatibility: This control box is only compatible with KickAss Smart or Ultra-X batteries. It is not compatible with other brands. KickAss will not cover restocking costs for incompatibility-related change of mind returns.
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.
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.
Extend your placement options for your 12V devices. Minimal voltage drop with Anderson style connectors for a strong & secure connection.
Extend the reach of your 12V devices with ease using the KickAss 8B&S 1 Metre Extension Lead. Featuring heavy-duty 8B&S twin core cable and Anderson style connectors, this extension ensures minimal voltage drop for a reliable and secure connection. Built with a smooth PVC outer for added durability and resistance to grease, oil, and acids, it's the perfect accessory for uncompromising performance.
This heavy duty cable features weatherproof casing to protect the fuse from dust and damage. The durable 8 B&S cable is encased in a smooth PVC outer layer for protection and ease of use.
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:
See links below for replacement fuses:
Spare 50A MAXI Fuse - Red
| Length | 830mm |
| Cable Type | 8B&S (8.3mm²) single core |
| MAXI Fuse Rating | 80A |
| Ring Terminals | 8mm Ring Terminals |
| Specification | Details |
|---|---|
| Voltage | 12V DC Nominal |
| Max Current | 50A Input / Output |
| Anderson Circuit Protection | 50A Autoresettable Circuit Breaker |
| Cig Socket Protection | 15A Share Fuse (Spare Included) |
| USB-A | 4 x 2.1A |
| USB-C PD | 1 x 18W |
| QC 3.0 | 1 x 18W |
| Lithium Battery Status | SOC, Current, Voltage, Temperature, System Alerts |
| Power Input Connection | 50A Anderson Style Connector |
| Battery Data Connection | RJ45 |
| Supported Batteries | KickAss Smart and Ultra-X Series |
| Dimensions | 180 x 120 x 58mm |
| Main Cable Length | 6.5M - 3 Core |
| Ignition Cable Extension | 3M - 14AWG Single Core |
| Cable Size - 3 Core | 2x 6AWG (13.5mm²), 1x 14AWG (1.8mm²) |
| Insulation Material | Inner - Silicon / Outer - PVC |
| Rated Temperature | Max. 105°C |
| Ring Terminals | M8 - Battery / M6 - Fuse |
| Fuse | 80A MIDI Fuse with Holder |
| Connections | 3 Pin Anderson Style / Bullet |
| Charger Output Voltage Range | 3–16V DC |
| Alternator Input Voltage Range | 9–32V DC |
| Solar Input Voltage Range | 9–32V DC |
| Maximum Input Current | 56A |
| Maximum Continuous Charging Current | 40A |
| Recommended Output Fuse Size | 50A |
| No Load Current Draw | 10 mA |
| Battery Chemistry | LiFePO4 | AGM | GEL | CAL | WET |
| Efficiency | Solar - 99% Max | Alternator - 92% Max |
| Operating Temperature | -20 °C to +80 °C |
| Ingress Protection | IP66 |
| Certifications | RCM Mark | FCC |
| Recommended Battery Capacity | |
| Lead Acid (WET, GEL, AGM, CAL) | 160 – 500Ah |
| LiFePO4 | 50 – 500Ah |
| Charge Profile | |
| Absorption Voltage | GEL - 14.1V | WET - 14.4V | AGM - 14.7V | CAL - 15.3V | LiFePO4 - 14.5V |
| Float Voltage | GEL - 13.5V | WET - 13.4V | AGM - 13.4V | CAL - 13.6V | LiFePO4 - NA |
| Minimum Auxiliary Battery Voltage | GEL/WET/AGM/CAL - 9V | LiFePO4 - 0V |
| Alternator Charge Conditions | |
| 12V Alternator Input (Ignition OFF) | CUT-IN 13.2V | CUT-OUT 12.6V |
| 12V Alternator Input (Ignition ON) | CUT-IN 12.2V | CUT-OUT 10.5V |
| 24V Alternator Input (Ignition OFF) | CUT-IN 26.4V | CUT-OUT 25.2V |
| 24V Alternator Input (Ignition ON) | CUT-IN 24.4V | CUT-OUT 21V |
| Warranty | 2 Year |
| Voltage | 12.8V |
| Capacity | 300Ah |
| Cell Type | Prismatic |
| Max Continuous Discharge | 300A |
| Max Continuous Charge | 250A |
| Peak Discharge | 660A @ 30 Seconds |
| Ingress Protection | IP65 |
| Max Charge Temp | 60°C |
| Min Charge Temp | 0°C |
| Max Discharge Temp | 65°C |
| Min Discharge Temp | -20°C |
| Cycle Life | 4000+ |
| Bluetooth | Yes |
| Remote Display | Optional |
| Parallel / Series Remote Monitoring | Yes, up to 4 |
| Dimensions (Battery with terminals) | 242 x 180 x 460 |
| Dimensions (With Mounting Brackets) | 242 x 180 x 500 |
| Weight | 30kg |
| Certifications | IEC 62619, UN38.3, FCC, EMC |
| KickAss Automotive Inline Maxi Fuse Holder with Anderson Plug | |
| KickAss 12V Control Box & Battery Monitor - with LCD Screen | |
| KickAss Heavy Duty Plug and Play DCDC Wiring Kit - 6.5m | |
| KickAss 8B&S Extension Lead with Anderson Style Connectors - 1m | |
| KickAss Smart 12V/24V 40A DCDC Charger With Solar MPPT + Integrated Bluetooth + Pre-Wired Anderson | |
| KickAss Smart 12V 300Ah Ultra-X Lithium Compact Deep Cycle Battery LiFePO4 - Series 2 |
Unlock the ultimate off-grid power solution with the KickAss 12V 300Ah Ultra-X Lithium Dual Battery Premium Kit. Perfect for the serious traveller or 4WD enthusiast, this kit combines our high-performance 300Ah Ultra-X Lithium Battery with a smart 40A DCDC Charger, ensuring your power needs are met wherever your adventure takes you. The integrated solar MPPT, Bluetooth connectivity, and Anderson connections make system management a breeze. Complete your setup with the included control box, battery monitor, wiring kit, and essential fuses, offering a seamless integration and reliable power distribution. Don't let power limitations hold you back; experience the confidence of reliable energy in the most demanding Australian conditions.
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