KickAss 12V 460Ah Ultra-X Lithium Battery + Flexicharge 50A Charger Bundle

When you're running a full caravan setup far from the nearest power point, you need a battery that won't let you down. The KickAss Ultra-X 460Ah Deep Cycle Lithium Battery is built for exactly that, delivering massive useable capacity, intelligent protection, and the flexibility to scale your system as your needs grow.

460Ah of Useable Capacity, Run Everything, Go Anywhere

At the heart of the Ultra-X is a huge 460Ah of useable capacity, giving you the freedom to run high-draw appliances like air conditioners and induction cooktops simultaneously, without constantly watching your power levels. Whether you're parked up for a week in the outback or running a fully loaded caravan, this battery has the grunt to keep everything running exactly the way you want it.

300A Continuous Discharge, Stable, High-Output Power

The Ultra-X delivers strong, consistent 300A output capable of running a 3000W inverter while still leaving headroom for additional 12V appliances. With a surge capacity of up to 660A for 30 seconds, it handles the demands of multiple high current devices starting simultaneously.

Stackable Design, Maximum Capacity, Minimum Space

Space is always at a premium in a caravan or camper build, and the Ultra-X is designed with that in mind. It is specifically designed to be installed lying down flat in a locker or cabinet to make the most of tight spaces. When you need more capacity, simply stack multiple units together. A linking kit is included, complete with busbars for parallel connection and mounting brackets to lock the batteries together securely.

Intelligent BMS, Built-In Protection You Can Count On

The Ultra-X features an intelligent multi-level BMS that continuously monitors key internal components to keep the battery operating safely under all conditions. Protection covers temperature extremes, overcharge, over-discharge, and short circuits, so whether you're in the middle of a scorching summer or a frosty alpine night, the battery manages itself so you don't have to.

Bluetooth Monitoring, Your Power System in Your Pocket

Stay on top of your power with the KickAss Bluetooth app. Monitor state of charge, wattage, voltage, current, temperature, and real-time system alerts, all from your smartphone. No more guesswork, no more surprises. Having live data at your fingertips means you can make smarter decisions about your power usage and get the most out of every charge cycle.

Remote Display Monitoring, At-a-Glance Power Data

The Ultra-X pairs seamlessly with the KickAss Smart Lithium Battery Remote Display Unit (sold separately), letting you monitor battery levels, temperature, current, time to full/empty, voltage and more from inside your vehicle's cabin or wherever you choose to mount it. Clear, real-time data, always within sight.

Parallel & Series Configuration, Scale Your Setup Your Way

The Ultra-X is built to grow with your power needs. Connect up to four batteries in parallel to build a 12V bank of up to 1840Ah, or wire them in series to create a 48V system at 460Ah. The Ultra-X gives you the flexibility to configure your system exactly the way you need it.

Whole-System Monitoring, No External Shunt Required

Monitoring a multi-battery setup usually means adding an external shunt to the equation, but not with the Ultra-X. Simply connect each battery using an RJ45 cable, and both the optional KickAss Remote Display Unit and the Bluetooth app can monitor the entire bank as a single unit. Consolidated data, no extra hardware, no hassle.

Built to Last, Rugged, Certified, and Ready for Anything

The Ultra-X is housed in a tough metal case with integrated mounting points and anti-vibration pads, making it equally at home in a hard-working caravan, 4WD, or off-grid setup. With a cycle life of 4000+ cycles at 80% depth of discharge and IEC 62619 certification confirming it meets stringent international safety standards, this is a battery engineered for the long haul.

The KickAss Flexicharge 12V 50A ACDC Smart Battery Charger is built for serious off-grid, touring, and workshop setups. Engineered for fast charging high-capacity batteries like the KickAss Ultra-X range, it delivers powerful performance, intelligent control, and flexibility across multiple battery types – keeping your system running reliably on the road, on-site, or on shore power.

Fast, Controlled 50A Charging

Delivering up to 50 amps of output, this charger rapidly restores power to large lithium batteries and high-capacity systems. Capable of recharging a 200Ah lithium battery in as little as four hours, it’s engineered for serious power users who need their batteries charged efficiently and safely.

Fully Adjustable Output

Choose from 50A, 32A, 16A, or 4A charging modes to suit your setup. Whether you’re maintaining a small vehicle’s starter battery or powering a large lithium bank, this charger gives you precise control to ensure optimal performance and battery longevity.

Smart Bluetooth Control

Monitor and manage your charging system directly from your smartphone. With built-in Bluetooth connectivity, you can set battery type, adjust charge parameters, and view live voltage, current, and system status – all without touching the charger.

Multi-Chemistry Compatibility

Designed for total flexibility, this charger supports Lead Acid, AGM, Gel, and Lithium batteries. It automatically applies the correct charging profile for each chemistry, ensuring the right balance of speed, safety, and battery protection.

Integrated Vehicle Diagnostics

Doubles as a diagnostic tool, checking alternator output, starter battery health, and cranking performance. Instantly identify weak points in your vehicle’s electrical system before they become roadside problems.

Dynamic Battery Maintenance

Once your battery reaches full charge, the charger switches to intelligent maintenance mode, monitoring voltage and applying a top-up only when needed. This prevents overcharging and keeps your system fully charged and ready.

Advanced Multi-Stage Charging

The smart 3-stage algorithm – bulk, absorption, and float – ensures fast, safe, and complete charging. Throughout the process, voltage and current are constantly monitored to deliver precision control, maximise efficiency, and extend battery life.

Intelligent Cooling & Quiet Mode

Temperature-controlled fans automatically adjust speed for efficient cooling with minimal noise. Activate Quiet Mode to further reduce fan operation and output current – ideal for overnight use or low-noise environments.

Simple Plug & Play Setup

With Anderson-style DC output and IEC AC input, installation is fast and flexible. Use the supplied Anderson-to-ring terminal cable for fixed installs or optional alligator clips for portable use, giving you connection options for any charging scenario.

Lithium Recovery & Starter Battery Replacement Mode

Includes a recovery function to safely revive lithium batteries that have entered low-voltage protection mode. It also operates as a regulated 12V DC power supply, for maintaining system voltage during battery replacement to avoid ECU resets or data loss.

EV and Hybrid Inverter Enabled Dual Battery Charger

Utilise the inverter in your EV, Hybrid or mild hybrid vehicle to charge our dual battery system through the 50A Smart AC Charger. Simply connect the charger input to the inverter output in the vehicle and you’ve got a plug-and-play dual battery system.

Clear LCD Display & Status Indicators

Stay informed with the integrated LCD screen, showing live voltage, current, and charge stage data. A status LED provides at-a-glance confirmation of charger operation and progress.

Built-In Protection & AGM Reconditioning

The Charge Guard system includes reverse polarity, short circuit, over-voltage, over-temperature, and over-current protection to safeguard your gear. Plus, an AGM Recondition Mode helps restore ageing AGM batteries by dissolving sulphate buildup and recovering lost capacity.