The Under Bonnet Kit | Dual Battery System | 105Ah includes a battery charger, cables, heat-resistant wrap, and a 12.8V 105Ah iTECH120X Lithium Battery—ideal for dual battery or under bonnet setups.
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.
    The Under Bonnet Kit | Dual Battery System | 105Ah includes a battery charger, cables, heat-resistant wrap, and a 12.8V 105Ah iTECH120X Lithium Battery—ideal for dual battery or under bonnet setups.
    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.
The Under Bonnet Kit | Dual Battery System | 105Ah includes a battery charger, cables, heat-resistant wrap, and a 12.8V 105Ah iTECH120X Lithium Battery—ideal for dual battery or under bonnet setups.
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.
The Under Bonnet Kit | Dual Battery System | 105Ah includes a battery charger, cables, heat-resistant wrap, and a 12.8V 105Ah iTECH120X Lithium Battery—ideal for dual battery or under bonnet setups.
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.
    The Under Bonnet Kit | Dual Battery System | 105Ah includes a battery charger, cables, heat-resistant wrap, and a 12.8V 105Ah iTECH120X Lithium Battery—ideal for dual battery or under bonnet setups.
    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.
The Under Bonnet Kit | Dual Battery System | 105Ah includes a battery charger, cables, heat-resistant wrap, and a 12.8V 105Ah iTECH120X Lithium Battery—ideal for dual battery or under bonnet setups.
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.

5.0

1 reviews

Under Bonnet Kit
Dual Battery System
105Ah

Regular price
$772.61
Sale price
$772.61
Regular price
$1,247
Tax included. Shipping calculated at checkout.
  • 105Ah Dual Battery System
  • Bluetooth BMS
DCDC Charger:

This kit includes:

As part of our esteemed Dual Battery Kit Collection, the iTechworld Under Bonnet Kit offers cutting-edge components carefully curated for your under-bonnet applications. Built for the long last performance, this bundle guarantees a seamless power experience.

This kit's main component is the iTECH120X (105Ah) Lithium Battery, which sets a new standard for reliability and performance. This battery is highly durable and has an IP67 rating, meaning it is fully protected against water and dust. Inside the battery is a heat shield which makes it perfect for under-bonnet installations. Additionally, the iTECH120X comes with an impressive 5-year warranty, ensuring long-lasting power for all your journeys.

Enhance your battery's performance with the included external Battery Heat Shield. Specially designed for under-bonnet applications, this heat shield creates an extra protective barrier, keeping your battery cool even in the most demanding conditions. Optimise your battery's lifespan and efficiency with this intelligent addition to your setup.


Tailor your charging experience to your needs with the iTECHDCDC25 and iTECHDCDC40 charger options, designed to deliver excellent performance for the iTECH120X battery.

  • iTECHDCDC25 - 25 Amps Per Hour: Choose the iTECHDCDC25 for a reliable charging rate of up to 25 amps per hour. This option efficiently charges the iTECH120X battery, providing a full charge from flat in just 4.2 hours. With steady charging performance, you can easily keep your battery ready for your next adventure.

  • iTECHDCDC40 - 40 Amps Per Hour: The iTECHDCDC40 is the perfect choice for rapid charging capability. Offering an impressive 40 amps per hour, this charger ensures your iTECH120X battery is ready for action in no time, taking only 2.6 hours to reach a full charge from flat. Ideal for those seeking quick turnaround times and maximum convenience during their travels.

Whether you prioritise steady and reliable charging with the iTECHDCDC25 or opt for the rapid charging prowess of the iTECHDCDC40, you can count on iTechworld to provide the perfect solution for your power needs. With both options designed to deliver excellent performance, you can confidently rely on your iTECH120X battery to power your adventures.

The Under Bonnet Kit is Australia's only fully warranted under-bonnet lithium system, providing a trailblazing and exceptional power solution. With unparalleled efficiency and reliability, this kit is tailored to excel in under-bonnet applications, providing a seamless experience for your adventures.

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Frequently Asked Questions about the Under Bonnet Kit Dual Battery System 105Ah

Can the iTECH120X under bonnet lithium battery handle extreme engine bay temperatures over long periods?

Yes. The iTECH120X is made for the heat, vibrations, and dust that comes with Australian travel. We know this because we design and test everything right here, so we know that our systems won't let you down whilst on the road.

Add to this high-temperature LiFePO4 cells, an integrated internal heat shield, and tough IP67-rated housing for dust and moisture protection, and you can see you’re in safe hands when it comes to extreme engine bay temperatures.

How does the integrated heat shield inside the iTECH120X differ from the external heat shield in protecting the battery?

The integrated heat shield is built into the under bonnet lithium battery, giving the cells and electronics some extra protection from radiant heat. The external heat shield wraps the battery entirely and acts as a first-line barrier against hot airflow, engine block heat, and long-term exposure. The strength comes from using these two solutions together to create a dual-layer thermal defence for maximum durability.

What factors should I consider when choosing between the DCDC25 and DCDC40 chargers beyond just charge time?

Apart from speed, think about your alternator’s output, available space, heat load, and driving patterns. The DCDC25 under bonnet battery gives you the same steady charging but with lower current draw; something that makes it a great fit for smaller alternators or less frequent heavy loads. 

The DCDC40 is more aimed at higher-demand setups. For these configurations it promises rapid bulk charging for larger batteries or when you need to run high-draw appliances.

Is there a recommended maximum cable length between the iTECH120X battery and the DCDC charger for optimal performance?

Yes. For minimal voltage drop and the best possible charge delivery, your cable should be 2m or less using the recommended cable gauge. Still, longer runs are sometimes unavoidable. If this is the case, increase cable thickness so you still enjoy the same high performance levels.

Can I install this Under Bonnet Lithium Battery Kit myself, or is professional installation recommended for best results?

We aim to make everything as easy as possible at iTechworld. Pre-wired connectors, colour-coded cabling, and compact mounting trays make self-installation quick and simple, but we do recommend professional installation if you’re not 100% confident. 

Will the iTECH120X maintain peak performance if frequently charged with the faster DCDC40 charger?

Yes. The built-in Battery Management System (BMS) regulates the input current and voltage to keep on top of unnecessary cell stress. Whether using the DCDC25 or DCDC40, your under bonnet lithium battery will stay performing at the highest possible level.

How does the Bluetooth app integrate with the battery - what parameters can I monitor in real time?

The app connects directly to the battery’s BMS for a live readout for state of charge, voltage, amps in/out, temperature, and any active protection alerts. Monitor your lithium battery without even lifting the hood.

Is this Under Bonnet Kit compatible with smart alternators or vehicles with regenerative braking systems?

Yes. Hook your DCDC chargers up to smart alternators or regenerative braking systems, all because they’ve been engineered with variable voltage inputs in mind.

Can I expand the system by connecting additional batteries or solar panels later on?

Absolutely. Parallel-connect another iTECH120X or integrate solar panels into the DCDC charger if you want that little extra off-grid freedom.

What happens to charging performance if I regularly drive only short distances?

Short trips probably won’t fully recharge the battery, especially if you’re running high-demand gear. Supplementing with solar panels or mains charging will keep your lithium under bonnet battery at optimal charge.

Does mounting the iTECH120X under the bonnet affect engine airflow or require repositioning existing components?

In most vehicles, the iTECH120X fits existing auxiliary battery mounts without obstructing airflow or requiring component relocation.

Are there any special maintenance or inspection steps needed to ensure the battery stays within safe temperature limits?

You should check over the external heat shield, battery mounts, and cable connections to make sure everything remains safe and secure. This is especially true if you’re driving in some of the country's tougher conditions. 

How does the IP67 rating hold up to constant vibration and debris exposure in off-road conditions?

An IP67 rating means complete dust sealing and water resistance of up to 1 m depth for 30 minutes. When combined with vibration-damped mounts, you’ve got a lithium under bonnet battery that can deal with anything the road throws you. 

Can I use the same DCDC charger to top up other accessories or auxiliary batteries beyond the iTECH120X?

Yes, if they share the same chemistry and voltage profile. Always confirm compatibility before connecting anything together. 

How does this kit compare to traditional AGM or lead-acid dual battery setups in an under bonnet environment?

The iTECH120X is where you’ll find the higher usable capacity, much faster charging, lighter weight, and longer service life than AGM or lead-acid options.

Bundle Contents

IEC:62619

INTERNATIONALLY CERTIFIED

100%

USABLE CAPACITY

105AH

LIFEPO4 LITHIUM BATTERY

BLUETOOTH
CONNECTIVITY

5 YEAR

WARRANTY

IP67

WATERPROOF

AND DUSTPROOF

The iTECH120X lithium battery has over 10 years of design and development in Australia. Our Australian engineers have spent countless hours building and testing what we believe to be the highest-quality lithium battery available on the market today.

Our technology now allows an unlimited number of new iTECH120X to be connected in parallel. You can make a battery any size you wish by connecting as many iTECH120X lithium batteries together to make a 12v MEGA battery of any size. The latest operating system allows a series connection of 4 lithium batteries for 48V applications.

Never guess your batteries health again. The iTECH120X Lithium Battery now comes with integrated with Bluetooth compatibility to monitor your batteries status via the iTechworld app. Download the iTechworld app on the App Store. Google Play app coming soon.

iTechworld has been designing and developing Lithium Batteries for over 10 years, constantly improving and testing our designs. The iTechworld Lithium Batteries are Australian standard certified to IEC:62619 to create the safest and highest-quality lithium batteries available in the Australian market.

No changing of systems, equipment, or extensive re-wiring is required in most cases. You simply pull your old heavy AGM batteries out and put the new lightweight iTECH120X in. The iTECH120X is the only true drop-in upgrade for your existing batteries.

Utilising our latest prismatic cell design offering more vibration resistance and stability for big bumps with vibration-dampening technology, the iTECH120X is the toughest deep cycle battery iTechworld has ever built.

The iTECH120X is entirely water and dust sealed. Boasting an IP67 rating, this battery can be fully submerged in 1m deep water for up to 30 minutes and has the highest level of dust protection available. No other lithium batteries can match that in Australia today.

In order to super-charge the iTECH120X’s performance, we have equipped it with a new Battery Management System (BMS) specially programmed by iTechworld engineers to auto cell-balance and squeeze every ounce of performance from this deep cycle battery.

As a testament to the toughness and performance of our iTECH120X lithium batteries, we have backed them up with a full 5-year Australian warranty (3 years full replacement, 2 years pro-rata).

 

 

PACKAGE CONTENTS

  • 1 x iTECH120X 105Ah Lithium 12v Battery
  • 1 x User Guide

WARRANTY & SUPPORT

The iTECH120X warranty is 5 years (3 years full replacement 2 years pro-rata).

*Storage deep cycle battery only. It cannot be used as a cranking battery.

If your iTechworld battery enters safe mode, please follow the instructions HERE

quick stats

  • Max Discharge Rate (5 seconds)430 amps
  • Prismatic Cell Technology10,000+ cycles @ 40% DoD
  • Safety certificationsIncluding IEC:62619
  • Lightweight at 10kgEquivalent AGM weighs approx. 60kg
  • Warranty5 year Australian warranty

product dimensions

  • A: Length: 255mm
  • B: Width: 170mm
  • C: Height: 215mm (225mm including terminals)

X-Range User-Guide

X Range Batteries User Guide

download

COMPATIBLE WITH MOST

BATTERY TYPES

SOLAR POWER

PRIORITY MODE

CUSTOM

CHARGING ALGORITHM

VIBRATION-PROOF
HEAT-DISPERSING DESIGN

32V MAXIMUM

INPUT VOLTAGE

IP67 WATERPROOF

RATING

The iTECHDCDC25 keeps your battery charged no matter the battery type or size.

The all-new iTECHDCDC25 charger incorporates an MPPT solar controller allowing charge from solar panels or blankets. When the vehicle runs, the DCDC charger will charge via the alternator; when the vehicle stops, the iTECHDCDC25 will continue charging via your solar panels/blankets (if added).

Exclusive to iTechworld DCDC chargers is a function known as Solar Power Priority (SPP) which represents the preference for solar input. This allows you to set your iTECHDCDC25 to use solar input over the vehicle alternator's input at the push of a button. Solar Power Priority places less load on the alternator, is better for the environment and helps to reduce fuel consumption.

Designed and developed in Australia for Australia, the iTECHDCDC25 is IP67 Waterproof, Dustproof and vibration-proof. Built with a heavy-duty metal case uniquely designed to help with heat dispersion, the iTECHDCDC25 is suited and warranted for under-bonnet installation. Mounting brackets are included in the case design, allowing for easy installation in your setup.

Many vehicles now have smart alternators that do not produce a high enough voltage to charge auxiliary batteries; the iTECHDCDC25 works by enhancing the voltage to the auxiliary battery regardless of the alternator type; the enhancement of voltage is also valuable for overcoming voltage drop from long cable runs to caravans and camper trailers.

A unique feature of the new iTECHDCDC25 is the ability to accept a wide voltage input range from either solar or vehicle input, with the maximum input voltage now being 32v. As the iTECHDCDC25 accepts higher input voltages, it opens the door to 24v inputs as well as some larger voltage solar panels commonly found in residential installations.

The new iTECHDCDC25 is compatible with all battery types but comes into its own when paired with iTechworld lithium batteries. All iTechworld lithium batteries have low voltage protection and will enter "safe mode" to protect themselves when their voltage dips below 10v.

There are various methods to bring an iTechworld lithium battery out of safe mode, but the new iTECHDCDC25 will get an iTechworld lithium battery out of safe mode automatically; if the lithium battery enters safe mode, turn off any load on the battery and the iTECHDCDC25 will take care of the rest, it's that simple.

Package Contents:

1 x iTECHDCDC25

6 x Colour coded Anderson Connectors (3 are pre-installed to the iTECHDCDC25)

1 x Instruction manual also found HERE

quick stats

  • Suitable forAll battery types
  • Warranty1 year

product dimensions

  • A: Length: 150mm
  • B: Width: 127mm
  • C: Depth: 39mm

DCDC25 40 User Guide

DCDC25/40 User Guide

download

*Battery not included

Fits standard battery sizes including the iTECH120X, iTECH120X PRO (pictured) and the iTECH160X PRO.

Your battery's longevity is influenced not just by usage patterns but also by the operating temperature. All batteries are particularly sensitive to heat, which can lead to issues like battery swelling or complete failure. Safeguard your battery and prolong its lifespan by shielding it from excessive heat.

Our specially designed Battery Heat Shield offers the perfect solution to protect your lithium battery in under-bonnet environments. Crafted with a heat-resistant foil exterior and an interior foam liner, this shield acts as a robust barrier against extreme temperatures.

By wrapping your lithium battery in our Battery Heat Shield, you can ensure optimal performance and durability for your battery, providing you with peace of mind and uninterrupted power when you need it most. Invest in the protection your battery deserves and experience the difference it makes in preserving its health and efficiency.

REVIEWS

5.0
Rated 5.0 out of 5 stars
Based on 1 review
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
1 review
  • Rated 5 out of 5 stars
    2 years ago
    5 Stars

    All works as promised

    BM
    Brad M.
    Verified Buyer