Clear all filters

Showing 47 of 47 products

Sort by:
Availability Reset
Price Reset
Price: 0 – $4,847.09
Filter and sort

Filter and sort

Showing 47 of 47 products

Availability
Clear
Price

Up to $4,847.09

Clear all filters
Clear all filters
Clear all filters
Showing 47 of 47 products
  • The Complete | Lithium 4WD/Caravan Kit | 240Ah features two lithium batteries, a 2000W inverter, a 40A DC charger, cables, and battery monitors—ideal for any 12V setup, all arranged on a white background.

    Complete
    Lithium 4WD/Caravan Kit
    240Ah

    4.9
    Rated 4.9 out of 5 stars
    19 Reviews
    • 240ah dual battery system
    • Bluetooth BMS
    From $3,268.90
    From $3,268.90
    $4,120
    View Product
  • The iTechworld Control Hub Kit features a control panel with display, 25A DCDC charger, iTECH120X PRO LiFePO4 battery, inverter, fuse box, cables, and connectors—all from iTechworld.

    iTechworld
    Control Hub Kit
    with 25A DCDC Charger and iTECH120X PRO

    5.0
    Rated 5.0 out of 5 stars
    2 Reviews
    • Integrated 25A DCDC Charger
    • Advanced monitor and shunt
    From $1,247.42
    From $1,247.42
    $1,833
    View Product
  • Summer Solar Sale ☀️
    Summer Solar Sale ☀️
    Limited-time savings on solar panels, blankets, and off-grid charging solutions. Get set for summer with dependable power you can trust.
    SHOP NOW
  • The Ultimate | 4WD Kit | with iTECH200SS includes a slim lithium battery, 3000W inverter, chargers, cables, fuses, and a battery monitor—perfect for your dual battery setup—all displayed on a white background.

    Ultimate
    4WD Kit
    with iTECH200SS

    5.0
    Rated 5.0 out of 5 stars
    1 Review
    • Slimline Design
    • Bluetooth BMS
    From $3,212.64
    From $3,212.64
    $3,563
    View Product
  • The iTechworld Complete Slimline 4WD Kit | 200Ah includes two large lithium batteries, a 2000W inverter, DC-DC charger, fuse, cables, connectors, battery trays, and a remote display—all against a white background.

    Complete
    Slimline 4WD Kit
    200Ah

    • 200ah Lithium Battery Power
    • iTECHDCDC40 Charger
    From $2,716
    From $2,716
    $3,274
    View Product
  • The iTechworld Complete Lithium 4WD Kit (210-240Ah) features two LiFePO4 batteries, a 2000W inverter, 40A DC-DC charger, cables, fuses, and a digital display—an ideal off-road power solution for any adventure.

    Complete
    Lithium 4WD Kit
    210-240Ah

    5.0
    Rated 5.0 out of 5 stars
    1 Review
    • 2000W Pure Sine Wave Inverter
    • iTECHDCDC40 Charger
    From $2,833.37
    From $2,833.37
    $3,772
    View Product
  • The Under Bonnet Kit | Dual Battery System | 105Ah is shown on a white background, featuring a lithium battery, black DC-DC charger with wires, and a silver ITECHWORLD-branded adhesive strip—perfect for dual battery setups.

    Under Bonnet Kit
    Dual Battery System
    105Ah

    5.0
    Rated 5.0 out of 5 stars
    1 Review
    • 105Ah Dual Battery System
    • Bluetooth BMS
    From $928.29
    From $928.29
    $1,247
    View Product
  • The iTECH100SS Behind the Seat Kit with Bluetooth includes a slim 12V lithium battery, matching black DCDC charger, assorted power cables, connectors, and mounting hardware, all shown on a white background.

    iTECH100SS
    Behind the Seat Kit
    with Bluetooth

    4.5
    Rated 4.5 out of 5 stars
    2 Reviews
    • Slimline design
    • Bluetooth BMS
    $1,266.82
    $1,266.82
    $1,556
  • The iTechworld Control Hub Kit, featuring a 40A DCDC charger, lithium battery, wiring kit, and power management control panel, is displayed on a white background.

    iTechworld
    Control Hub Kit
    with 40A DCDC Charger and Lithium Battery

    • Integrated 40A DCDC Charger
    • Advanced monitor and shunt
    From $1,538.42
    From $1,538.42
    $1,837
    View Product
  • Premium GoFurther | Dual Battery System | with iTECHDCDC40 Battery Charger and iTECH160X PRO Lithium Battery with Bluetooth - iTechworld

    Premium GoFurther
    Dual Battery System
    with iTECHDCDC40 Battery Charger and iTECH160X PRO Lithium Battery with Bluetooth

    • Advanced monitor and shunt
    • Integrated DCDC40
    $1,499
    $1,499
    $1,898
  • Premium GoFurther | Dual Battery System | with iTECHDCDC40 Battery Charger and iTECH120X PRO Lithium Battery with Bluetooth - iTechworld

    Premium GoFurther
    Dual Battery System
    With iTECHDCDC40 Battery Charger and iTECH120X PRO Lithium Battery with Bluetooth

    4.7
    Rated 4.7 out of 5 stars
    6 Reviews
    • Advanced monitor and shunt
    • Integrated DCDC40
    $999
    $999
    $1,698
  • The iTechworld Expansion Super Slimline Canopy Dual Battery Kit (300Ah Lithium) is a complete off-grid solar solution with charge controller, panel, inverter, cables, fuse, alligator clips, mounting hardware & monitoring display—all iTechworld branded.

    iTechworld
    Expansion Super Slimline Canopy Dual Battery Kit
    300Ah Lithium

    $4,195.25
    $4,195.25
    $4,667
    View Product
  • iTechworld | Complete Ultra Slimline Canopy Dual Battery Kit | 200Ah Lithium - iTechworld

    iTechworld
    Complete Ultra Slimline Canopy Dual Battery Kit
    200Ah Lithium

    $3,478.42
    $3,478.42
    $4,137
    View Product
  • iTechworld | Ultimate Ultra Slimline Canopy Dual Battery Kit | 200Ah Lithium - iTechworld

    iTechworld
    Ultimate Ultra Slimline Canopy Dual Battery Kit
    200Ah Lithium

    $3,283.45
    $3,283.45
    $3,686
    View Product
  • iTechworld | Expansion Ultra Slimline Canopy Dual Battery Kit | 200Ah Lithium - iTechworld

    iTechworld
    Expansion Ultra Slimline Canopy Dual Battery Kit
    200Ah Lithium

    $3,867.39
    $3,867.39
    $4,429
    View Product
  • iTechworld | Complete Ultra Slimline Canopy Dual Battery Kit | 300Ah Lithium - iTechworld

    iTechworld
    Complete Ultra Slimline Canopy Dual Battery Kit
    300Ah Lithium

    $3,769.42
    $3,769.42
    $4,637
    View Product
  • iTechworld | Ultimate Ultra Slimline Canopy Dual Battery Kit | 300Ah Lithium - iTechworld

    iTechworld
    Ultimate Ultra Slimline Canopy Dual Battery Kit
    300Ah Lithium

    $3,574.45
    $3,574.45
    $4,186
    View Product
  • iTechworld | Expansion Ultra Slimline Canopy Dual Battery Kit | 300Ah Lithium - iTechworld

    iTechworld
    Expansion Ultra Slimline Canopy Dual Battery Kit
    300Ah Lithium

    $4,158.39
    $4,158.39
    $4,230
    View Product
  • An iTechworld 300Ah Ultra Slim Power Core All-in-One Complete System, featuring a lithium LiFePO4 battery and red cable with connectors, is displayed on a white background.

    iTechworld
    300Ah Ultra Slim Power Core
    All-in-One Complete System

    $4,847.09
    $4,847.09
    $5,899
    View Product
  • A black iTechworld 200Ah Ultra Slim Power Core All-in-One Complete System, featuring a lithium LiFePO4 battery and a red cable with silver connectors, is displayed against a white background.

    iTechworld
    200Ah Ultra Slim Power Core
    All-in-One Complete System

    $4,556.09
    $4,556.09
    $5,399
    View Product
  • The iTechworld Ultimate Ute Dual Battery Kit features a 120Ah LiFePO₄ battery, solar panel, pure sine wave inverter, controller, monitor, cables, fuse, charger, and mounting brackets—everything needed for off-grid power.

    iTechworld
    Ultimate Ute Dual Battery Kit
    120Ah Lithium

    $2,220.33
    $2,220.33
    $2,611
    View Product

Dual Battery Systems

A person holds a large battery labeled “TECH120” while installing it into the engine compartment of a white vehicle outdoors at sunset.

Dual Battery Systems

Dual Battery Systems Built for Aussie Setups

When you need dependable power beyond the bitumen, iTechworld dual battery systems are ready and waiting to power your next adventure. Every product we engineer is tried and tested for harsh Australian conditions, meaning they’re ready for bush, beach and everything in between. These dual batteries give you the freedom to run fridges, lights, and other essential 12V gear without draining your starter battery.

Heading off-grid? Or setting up a touring rig? Whatever you need it for, our dual battery systems are the perfect combination of high-performance components with smart charging to keep your power steady and your starter safe. Don’t waste time on battery solutions that aren’t up to scratch. Whether it’s a dual battery setup, a ready-to-go caravan system, or one of our trusty 4WD systems, we’re a family-owned power expert that’ll get it right the first time round. 

Power Any Adventure With iTechworld’s Dual Battery Systems

  • All-in-One Power Solution: There’s no need to mix and match; these are the best dual battery systems for DCDC charging, AC mains charging, battery isolation, fuse protection, and compact mounting. 

  • Smart Multi-Stage Charging: Supports true multi-stage charging for lithium, AGM, and lead-acid batteries. This extends cell life by slowing down and maintaining charging as it approaches 100%. 

  • Mobile-Ready Design: Rugged, compact housings make installation quick and simple in tight spaces. These dual dual battery systems are made for small 4x4s, under seats, in canopies, or marine even compartments.

  • Auto Recovery and Protection: Built-in safeguards for voltage, temperature, and current mean your adventures are always powered safely.

  • Plug-and-Play Simplicity: Designed to work out of the box, making them ideal for those looking for a no-fuss, complete system.

  • Designed and Tested in Australia: Engineered to handle everything from red dust and coastal salt air to extreme temperatures and tough off-road use.

  • Real-World Support: Backed by local experts who know dual battery systems inside and out. No call centres and no scripts; just classic Aussie support.

FAQs

What is a dual battery system, and how does it function?

A dual battery system uses two batteries: one to start your vehicle, and a secondary (auxiliary) battery to power accessories like fridges or lights. An isolator or DCDC charger keeps the starter battery protected while the auxiliary battery keeps your gear running.

What are the benefits of installing a dual battery system in my vehicle?

You can run 12V gear without draining your starter battery. It extends off-grid capability, keeps your fridge cold, and ensures your vehicle always starts when you need it.

Can I use my existing alternator to charge both batteries in a dual battery setup?

Yes, but you'll need a DCDC charger to properly manage voltage and protect lithium or AGM batteries. 

How do I properly install a dual battery system in my vehicle?

Always mount the auxiliary battery nice and secure, install a DCDC charger or isolator, connect fuses and cables, and test the system. Many setups are DIY-friendly, but complex rigs can use a professional install.

Do I need a dual battery system for camping or off-grid adventures?

Absolutely. If you plan to run a fridge, lights, or charge devices while parked, a dual battery system is a must-have for reliable power.

What components are essential for a reliable dual battery system?

You'll need a second battery, DCDC battery charger or isolator, fuses, cables, and a battery monitor for performance tracking.

How does a battery isolator work in a dual battery setup?

It automatically separates the starter and auxiliary batteries so the starter battery doesn't get drained by accessories.

Can I use different types of batteries (e.g., AGM and lithium) in a dual battery system?

Yes, but you must use a DCDC charger that supports both battery types to avoid damage and ensure proper charging profiles.

What maintenance is required for a dual battery system?

Check connections regularly, monitor voltage levels, and keep battery terminals clean. Lithium batteries require less maintenance than lead-acid.

Is it safe to install a dual battery system myself, or should I seek professional assistance?

If you're confident with 12V systems, you can DIY. Otherwise, it’s worth having a qualified installer ensure everything’s safe and compliant.

How does a dual battery system impact my vehicle's electrical system?

If installed correctly, it has minimal impact. Using proper chargers and isolators ensures your alternator and wiring aren’t overloaded.

Can a dual battery system be integrated with solar panels for charging?

Yes, pair yours with an off the grid solar system, solar blanket or fixed panel, and a compatible solar regulator or MPPT-enabled DCDC charger.

What are the common issues faced with dual battery systems, and how can they be resolved?

Common issues include poor connections, flat starter battery, or incorrect charger settings. Regular checks and proper installation fix most problems.

How do I monitor the performance and charge levels of both batteries in the system?

Use a dedicated battery monitor to track voltage, current, and charge status. Many units offer real-time data and alarms.

FAST & RELIABLE SHIPPING

Straight from our HQ to your doorstep - wherever you are in Australia, we get your gear to you fast.

Money Back Guarantee

If you're not completely satisfied with your purchase, we'll make it right. No questions asked.

Legendary Support

Real Aussie experts, real support. We’re here when you need us, no offshore call centres.

Proudly Australian

100% Aussie-owned and operated, delivering top-quality power solutions to Australians, by Australians.