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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.







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STILL ON THE FENCE?

See why our customers are all in—these reviews speak for themselves!

4.6
Rated 4.6 out of 5 stars
Based on 42 reviews
Total 5 star reviews: 34 Total 4 star reviews: 4 Total 3 star reviews: 1 Total 2 star reviews: 2 Total 1 star reviews: 1
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42 reviews
  • Ponlork C.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Finally upgraded

    Just finished installing and went for a drive and everything was working as it should. Battery was 12.8v so was just topping up in absorption mode. Can't wait to upgrade to lithium in the future and really give it a workout. Great as always so far from kickass, to complement the 8 year old 170ah agm .battery

  • Murray B.
    Flag of Australia
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 months ago
    5 Stars

    Does exactly what is required keeping my lithium batteries fully charged and ready to go.👍👍

  • BERNARD C.
    Flag of Australia
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 months ago
    5 Stars

    Quick delivery, great product and easy install should of got one years ago.

  • eric b.
    Flag of Australia
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 months ago
    5 Stars

    Very easy install and works like a charm

  • Mark R.
    Flag of Australia
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    5 months ago
    5 Stars

    Great product. Easy to install and works straight away.

Frequently Asked Questions

What types of batteries can the KickAss 12V/24V 40A DCDC Charger safely charge?
The KickAss 40A DCDC Charger is compatible with GEL, AGM, WET, CALCIUM, and Lithium LiFePO4 batteries, supporting auxiliary battery capacities from 200 to 500Ah for lead acid types and 120 to 500Ah for LiFePO4. This versatility ensures it can handle a wide range of battery setups for off-grid and adventure use.
This charger’s multi-stage charging algorithm optimises charging for each battery type, ensuring your auxiliary battery is fully charged and maintained safely, even in modern vehicles that don’t supply ideal charging voltages.
How does the KickAss 40A DCDC Charger protect my vehicle’s start battery?
The charger features built-in voltage sensing that connects the start battery to the auxiliary battery only when the vehicle is running, then disconnects them when the vehicle is off. This prevents the auxiliary battery from draining the start battery, preserving your vehicle’s ability to start every time.
This intelligent isolator control includes a 30-second delay before cutting in or out, ensuring smooth transitions and protecting both batteries from unnecessary discharge or overload.
Can I charge my auxiliary battery using solar panels with this KickAss charger?
Yes, the KickAss 40A DCDC Charger includes a built-in MPPT solar controller that efficiently charges your auxiliary battery from solar panels when the vehicle’s alternator is not running. It supports solar input voltages from 10V to 32V DC, maximising solar energy harvest.
The MPPT controller ensures you get the maximum power output from your solar panels, making it ideal for extended off-grid adventures where solar charging is essential to maintain battery health.
How do I set up the charger for my specific battery type?
To select the battery type, press and hold the Battery Mode button for 2 to 4 seconds until the battery type LED advances to the desired setting. The charger supports GEL, AGM, WET, CALCIUM, and Lithium LiFePO4 batteries, allowing you to tailor charging parameters precisely.
This simple setup ensures your battery receives the correct absorption and float voltages, optimising charge efficiency and battery lifespan without complicated programming.
What safety features are built into the KickAss 40A DCDC Charger?
The charger includes short circuit protection, reverse polarity protection, over voltage protection, over temperature protection, and temperature compensation via an included sensor. These features safeguard both your batteries and the charger during operation.
For example, if batteries are connected incorrectly, the charger won’t operate and will display a fault. Temperature compensation adjusts charging current based on battery temperature, preventing overcharging and extending battery life.
What are the recommended installation requirements for the KickAss 40A DCDC Charger?
The charger should be mounted as close as possible to the auxiliary battery, away from heat sources like turbos or exhaust pipes, and in a well-ventilated area. Use appropriate cable sizes and fit 50-75 amp fuses on both input and output sides for optimal safety and performance.
Following these installation guidelines ensures maximum charging efficiency, protects your wiring, and maintains safe operation even under heavy loads or harsh conditions.
Will the charger work with both 12V and 24V systems?
Yes, the KickAss 40A DCDC Charger operates on input voltages from 9V to 32V DC, supporting both 12V and 24V vehicle electrical systems. It automatically manages cut-in and cut-out voltages for each system to protect your batteries and ensure efficient charging.
This flexibility makes it suitable for a wide range of vehicles and setups, from standard 12V caravans to larger 24V trucks or boats, providing reliable charging wherever you go.
How efficient is the KickAss 40A DCDC Charger during operation?
The charger operates at approximately 93% efficiency at full load, delivering up to 40 amps continuous charging current and a maximum output power of 500 watts. This high efficiency means less energy is wasted, maximising battery charge and reducing heat generation.
With its IP66 rating, it’s also well protected against dust and water ingress, making it durable and reliable for rugged outdoor and off-grid environments.
FIND A KICKASS INSTALLER

Need a hand installing your KickAss gear? Find approved installers in your local area.

BOOK A 1-ON-1 CHAT WITH A 12V EXPERT

Got questions about your off-grid power setup? Book a consultation with one of our 12V experts.

VISIT A KICKASS RETAIL STORE

Drop into our Brisbane, Sunshine Coast, Sydney, Melbourne, or Perth stores for friendly expert advice and hands-on support.

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