KickAss Flexicharge 12V 50A ACDC Smart Battery Charger For Lead Acid, AGM & Lithium Batteries + Integrated Bluetooth
Powerful, smart, and built for serious setups, the KickAss Flexicharge 50A ACDC Battery Charger delivers rapid charging for lithium, AGM, and lead-acid batteries. Ideal for fast-charging high-capacity batteries like the KickAss Ultra-X 230Ah range, it offers adjustable output, Bluetooth control, and intelligent multi-stage protection for safe, efficient power anywhere.
Pickup available at Acacia Ridge Store
Usually ready in 1 hour
1 Year Warranty
This product is covered by a 1 Year Limited Warranty.
Description
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, Calcium, 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.
Specifications
| Input Voltage | 230Vac ±10% |
| Output Voltage | 12V Nominal |
| Output Current | 50A, 32A, 16A, 4A |
| Battery Chemisty | AGM, STD, GEL, LiFePO4 |
| Maximum Input Power | 900W |
| Standby Power | ≤5W |
| Effeciency | ≥85% |
| Dimensions | 87 x 232 x 338mm |
| Wieght | 3.05Kg |
| Certifications | IEC60335-1 ,IEC60335-2-29, CISPR 14, AS/NZS 4268 |
User Manual and Support
KickAss has warehouses located on both the East and West Coast of Australia. Express orders are dispatched same business day if ordered before 12pm AEST. Standard orders are dispatched within 2-3 business days. Deliveries are made during business hours, Monday to Friday.
At KickAss, we take full control of our product journey - from concept to creation - by designing, engineering, and manufacturing our own batteries and 12V accessories in our wholly owned facilities located in Australia, China, and the USA. This end-to-end approach allows us to maintain strict quality standards, drive innovation, and deliver unbeatable value. By owning our production facilities, we ensure every product that carries the KickAss name is built tough, tested rigorously, and ready for off-grid adventure.
Change your mind? No worries, our quick & easy online or in-store returns process has you covered. Learn more.
BUNDLE & SAVE!
High capacity lithium power bundle featuring a 205Ah battery box, 50A smart AC charger and mounting tray for fast charging and secure setup.
Complete high capacity dual battery kit featuring a 205Ah lithium battery box, 2000W inverter, AC charger, tray and plug and play wiring.
Delivers up to 50A of charging power, specially designed for fast-charging high-capacity batteries like the KickAss Ultra-X range. With the right setup, it can recharge a 200Ah lithium battery in as little as four hours.
Select between 50A, 32A, 16A, or 4A output to match your setup perfectly.
Connect via Bluetooth to the mobile app for complete remote access. Adjust charge settings, select battery type, and track voltage, current, and system status in real time – from the convenience of your smartphone.
Compatible with Lead Acid, AGM, Gel, Calcium, and Lithium batteries, the unit automatically applies the correct charge profile for each type – ensuring optimal performance, safety, and battery life across any setup.
Quickly assess your vehicle’s charging and starting systems with built-in alternator and starter battery tests. The charger checks output voltage, cranking performance, and battery capacity to help you spot issues before they leave you stranded.
Once your battery is fully charged, the charger automatically monitors battery voltage and delivers a top-up only when needed – preventing overcharging and keeping your system ready to go. Ideal for vehicles or setups permanently connected to shore power.
Uses an advanced 9-stage charge and maintenance algorithm to charge efficiently and protect battery health. Throughout the process, the charger monitors voltage and current to ensure safe operation, automatically applying maintenance or recovery charging when needed for maximum battery life.
Temperature-controlled fans adjust their speed based on internal heat and charging load, keeping the system cool without unnecessary noise. This smart design reduces dust intake and ensures reliable, quiet operation wherever you install it.
Features an easy Anderson-style DC output and standard IEC AC input for quick setup. Use the included Anderson-to-ring terminal lead for fixed installs, or add optional alligator clips for portable or workshop use – giving you flexible connection options for any charging scenario.
Safely revives lithium batteries that have entered low-voltage protection mode. The charger applies a controlled recovery current to restore normal operation and get your battery charging again without risk of damage.
Acts as a 12V DC power source when replacing your starter battery – preventing ECU resets, data loss, or interruptions to other electronics.
The built-in LCD screen shows real-time charging data including voltage, current, and charge stage, while a clear status LED keeps you informed of charging progress and system operation at a glance.
Built with advanced safety features including reverse polarity, short circuit, over-voltage, over-temperature, and over-current protection – keeping both your charger and batteries safe.
Revives tired AGM batteries with a controlled over-voltage cycle that breaks down sulphate buildup on the plates, helping to restore lost capacity and extend overall battery life.
- 1 x 50A Smart ACDC Charger
- 1 x AC Input Cable
- 1 x Anderson to Ring Terminal Cable – 80cm
- 1 x Pair Alligator Clips, Compatible with Anderson & Ring Terminal Cable
See why our customers are all in—these reviews speak for themselves!
Frequently Asked Questions
How quickly can the KickAss Flexicharge 12V 50A charger recharge my battery?
This flexible amperage means you can optimise charging speed without stressing your battery, whether you need a slow trickle charge or a rapid recharge. The intelligent 9-stage charging process ensures efficient and safe charging, maximising battery life while getting you back on the road or off-grid quicker.
Can I use the Flexicharge with different types of 12V batteries?
This versatility means you only need one charger for all your 12V batteries, whether in vehicles, solar setups, or auxiliary systems. Special modes like AGM recondition and lithium recovery further enhance battery performance and longevity, making it a truly adaptable off-grid power solution.
How do I set up and start charging with the Flexicharge?
The on-board LCD displays real-time charging status, and Bluetooth connectivity lets you monitor and control the charger remotely via the app. This straightforward setup process makes it easy to get reliable, intelligent charging wherever you are.
Is the Flexicharge safe to use around my vehicle and batteries?
These built-in safeguards ensure your batteries and vehicle remain protected during charging. Plus, the charger’s low-noise, temperature-controlled cooling fans maintain optimal operating conditions, giving you peace of mind while powering your adventures.
What kind of connectivity does the Flexicharge offer for monitoring and control?
This smart connectivity enhances user experience by providing full control and insight into your battery’s condition, making it easier to maintain optimal performance and avoid unexpected power issues on the road or off-grid.
Can the Flexicharge help restore older or low-voltage batteries?
These features extend the life of your batteries, saving you money and reducing waste. By intelligently managing the charging process, the Flexicharge helps bring tired batteries back to reliable operation, making it a smart investment for long-term battery care.
What accessories come with the Flexicharge to help with installation?
This comprehensive kit means you can quickly install and start using the charger without needing additional parts, whether you’re charging vehicle starter batteries or auxiliary power systems, making it a convenient and ready-to-go solution.
How does the charger protect my battery from damage during charging?
This ensures your battery is charged efficiently and safely, maximising lifespan and performance. The charger’s smart technology adapts to battery condition and type, giving you confidence that your investment is well protected during every charge cycle.
