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$149.95 VALUEKickAss Flexicharge 12V 50A ACDC Smart Battery Charger For Lead Acid, AGM & Lithium Batteries + Integrated Bluetooth
Rated 4.8 out of 5 stars
12
Reg Price $549.95
$
369
95
SAVE
$180
⚡
Cheaper in a Bundle
Save more when you buy this as part of a KickAss kit.
View bundle deals →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.
Smart 50A Battery Charger
Adjustable Charge Current – 50A, 32A, 16A, and 4A
Bluetooth Monitoring & Control
Multi-Chemistry Charging
Integrated Vehicle Diagnostics with Flexible Charging Options – Alligator Clips or Ring Terminals
In stock
Pickup available at Acacia Ridge Store
Usually ready in 1 hour
1 Year Warranty
This product is covered by a 1 Year Limited Warranty.
SKU: KACHG1250BT
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
Fast Dispatch Available
Buy Direct & Save
Hassle Free Returns
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!
Save even more when you buy a KickAss Flexicharge 12V 50A ACDC Smart Battery Charger For Lead Acid, AGM & Lithium Batteries + Integrated Bluetooth in a KickAss Bundle!
KickAss 205Ah Lithium Battery Box + 50A Smart AC Charger Bundle with Tray
Reg Price $3,078.90
$
1880
SAVE
$1,198.90
High capacity lithium power bundle featuring a 205Ah battery box, 50A smart AC charger and mounting tray for fast charging and secure setup.
FREE ELECTRIC BBQ
KickAss 205Ah Lithium Battery Box Complete Dual Battery Kit with 2000W Inverter, AC Charger & Wiring
Reg Price $4,358.65
$
2547
SAVE
$1,811.65
Complete high capacity dual battery kit featuring a 205Ah lithium battery box, 2000W inverter, AC charger, tray and plug and play wiring.
FREE ELECTRIC BBQ
Buy this power station during our Portable Power Blitz and get a FREE 1400W BBQ!
$149.95 VALUE
Smart 50A Battery Charger
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.
Adjustable Charge Current
Select between 50A, 32A, 16A, or 4A output to match your setup perfectly.
Bluetooth Monitoring & Control
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.
Multi-Chemistry Charging
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.
Integrated Vehicle Diagnostics - Alternator and Starter Battery Health Check
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.
Dynamic Battery Maintenance
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.
Intelligent Multi-Stage Charging
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.
Intelligent – and Quiet – Cooling Fans
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.
Plug & Play Connection
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.
Lithium Recovery Mode
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.
Starter Battery Replacement Mode
Acts as a 12V DC power source when replacing your starter battery – preventing ECU resets, data loss, or interruptions to other electronics.
On Board LCD
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.
Charge Guard Protection
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.
AGM Reconditioning Mode
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.
What’s Included:
- 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
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Frequently Asked Questions
How quickly can the KickAss Flexicharge 12V 50A charger recharge my battery?
The KickAss Flexicharge can deliver up to 50 amps of charging current, allowing it to fast charge 12V lead acid, AGM, gel, and lithium batteries with capacities between 15Ah and 300Ah. It offers adjustable charge rates of 4A, 16A, 32A, or 50A to suit your battery size and type.
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.
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?
Yes, the Flexicharge supports multiple battery chemistries including lead acid, AGM, gel, and LiFePO4 lithium batteries. It intelligently adjusts charging profiles for each type, ensuring optimal voltage and current settings for safe, effective charging.
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.
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?
To set up, place the charger on a stable, dry surface, connect the AC input cable to a 230V power source, then attach the Anderson plug and alligator clamps to your battery (red to positive, black to negative). Select the charging current and battery type using the mode button, then charging starts automatically.
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.
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?
Absolutely. The Flexicharge includes comprehensive protection features such as reverse polarity, short-circuit, over-voltage, over-temperature, and over-current protection. It also advises against charging damaged or frozen batteries and requires lithium batteries to have an in-built Battery Management System (BMS) for safety.
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.
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?
The Flexicharge features integrated Bluetooth connectivity, allowing remote setup and real-time status updates through a dedicated app. You can monitor charging parameters, switch modes, and perform battery health checks conveniently from your smartphone.
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.
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?
Yes, it includes specialised modes like AGM recondition mode to restore capacity in aged or underperforming AGM batteries, and a lithium recovery mode designed to revive low-voltage lithium batteries safely.
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.
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?
The charger comes complete with an 80cm Anderson to ring terminal cable, alligator clamps, and a 180cm AC input cable. These accessories provide flexible and secure connections to a variety of battery setups.
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.
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?
The Flexicharge employs intelligent 9-stage charging combined with multiple protection features including reverse polarity, short-circuit, over-voltage, over-temperature, and over-current safeguards to prevent damage. It also recommends following battery manufacturer specifications for voltage and current limits.
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.
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.
