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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.







STILL ON THE FENCE?

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

4.8
Rated 4.8 out of 5 stars
Based on 42 reviews
Total 5 star reviews: 37 Total 4 star reviews: 3 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 1
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42 reviews
  • Pete S.
    Flag of Australia
    Verified Buyer
    Reviewing
    KickAss Smart 12V 105Ah Ultra Slimline Lithium Deep Cycle Battery LiFePO4
    I recommend this product
    Rated 5 out of 5 stars
    8 months ago
    5 Stars

    The slimline battery was just what I needed due to the very limited space I had to work with. Installation was easy, basically just plug and play. The remote battery monitor with bluetooth is brilliant. It looks like a rugged piece of equipment and should serve me well. Yet to use it in anger, but it has to be an improvement on my old lead acid setup!

  • Colin T.
    Verified Buyer
    Reviewing
    KickAss Smart 12V 105Ah Ultra Slimline Lithium Deep Cycle Battery LiFePO4
    I recommend this product
    Rated 5 out of 5 stars
    18 hours ago
    Great addition for running my car fridge.

    Solid frame holds this slimline battery in a tight space behind the rear seats. Ample amp hrs to hold my fridge for a couple of days without any inputs.

  • David M.
    Verified Buyer
    Reviewing
    KickAss Smart 12V 105Ah Ultra Slimline Lithium Deep Cycle Battery LiFePO4
    I recommend this product
    Rated 5 out of 5 stars
    4 days ago
    Great battery

    Battery was wrong size for my needs. My fault not Kackass's. They replaced it no worries

  • Luke M.
    Verified Buyer
    Reviewing
    KickAss Smart 12V 105Ah Ultra Slimline Lithium Deep Cycle Battery LiFePO4
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    AWESOME!

    As described. Works great and easy installation

  • Wyvern D.
    Verified Buyer
    Reviewing
    KickAss Smart 12V 105Ah Ultra Slimline Lithium Deep Cycle Battery LiFePO4
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Awesome product

    Like their name ...you guys Kickass

Frequently Asked Questions

How much capacity and power does the KickAss Smart 12V 105Ah Ultra Slimline Lithium Battery provide?
The KickAss Smart Ultra Slimline Lithium Battery offers a rated capacity of 105Ah and an energy output of 1344Wh at a nominal voltage of 12.8V. It supports a maximum continuous discharge current of 100A and a maximum continuous charge current of 50A.
This means you get a reliable and robust power source ideal for extended off-grid use, with enough capacity to run 12V appliances and systems efficiently while maintaining excellent cycle life and battery health.
Can I use this battery with my existing solar setup or 4WD dual battery system?
Yes, the KickAss 12V 105Ah Ultra Slimline Lithium Battery is designed for solar systems, 4WD dual battery setups, caravans, motorhomes, and emergency power systems. It includes 2 x 50A Anderson connectors and 2 x 175A Anderson connectors for versatile compatibility.
This flexibility makes it easy to integrate with your current off-grid or vehicle power systems, ensuring seamless plug & play installation and reliable power delivery for your adventures.
How do I safely set up and start using the KickAss Ultra Slimline Lithium Battery for the first time?
Before first use, fully charge the battery until the charger reaches the "Float" stage, indicating 100% state of charge (SOC), and complete a full charge cycle. This calibrates the battery’s SOC for accurate monitoring and optimal performance.
Following this ensures your battery’s management system works correctly and prolongs battery life. The battery also features Bluetooth compatibility and a Remote Display Unit for easy status monitoring.
What safety features does the battery have to protect it during use?
The battery includes a 100A internal Battery Management System (BMS) that protects against over and under voltage, over and under temperature, overcharge, over-discharge, and short circuits. It also triggers overcurrent protection if the current exceeds 100A.
These built-in safeguards mean your battery operates safely and reliably in harsh conditions, giving you peace of mind on every trip while maximising battery longevity.
Can I connect multiple KickAss Ultra Slimline batteries in parallel or series to increase capacity or voltage?
No, the KickAss Ultra Slimline Lithium Battery is not suitable for parallel or series connection. The internal BMS and design are optimised for single battery use to ensure safety and performance.
However, its 105Ah capacity and 100A discharge rating provide ample power for most off-grid and vehicle applications, making it a strong standalone power source for your needs.
How heavy is the KickAss Ultra Slimline Lithium Battery, and is it easy to install in tight spaces?
The battery weighs 16.5 kilograms and has an ultra-slim form factor designed specifically for fitments where space is limited. Its metal case includes mounting brackets and optional DCDC bracket kits for easy installation.
This slimline design allows you to maximise space in your vehicle or off-grid setup without sacrificing capacity or power, making it ideal for compact or custom installations.
How long can I expect the battery to last in terms of charge cycles?
The KickAss Ultra Slimline Lithium Battery delivers approximately 2000 cycles at 80% depth of discharge (DOD) and up to 4000 cycles at lower discharge rates.
This exceptional cycle life ensures years of dependable power, reducing the need for frequent replacements and providing excellent value for your investment in off-grid energy solutions.
What monitoring options are available to keep track of the battery’s status while in use?
You can monitor the battery’s status via Bluetooth using the KickAss KA App (available on Android and iOS) or through the optional Remote Display Unit (RDU) that plugs directly into the battery.
These tools allow real-time monitoring of battery health, state of charge, and alerts, giving you full control and confidence over your power system during your adventures.
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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