iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
An angled view of a rectangular display panel with blue screen segments and visible wiring, powered by the iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah.
Exploded view of a black and yellow iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah, showing internal components and separated top cover with specs: 12.8V, 3.84kWh.
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    An angled view of a rectangular display panel with blue screen segments and visible wiring, powered by the iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah.
    Exploded view of a black and yellow iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah, showing internal components and separated top cover with specs: 12.8V, 3.84kWh.
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
An angled view of a rectangular display panel with blue screen segments and visible wiring, powered by the iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah.
Exploded view of a black and yellow iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah, showing internal components and separated top cover with specs: 12.8V, 3.84kWh.
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
An angled view of a rectangular display panel with blue screen segments and visible wiring, powered by the iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah.
Exploded view of a black and yellow iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah, showing internal components and separated top cover with specs: 12.8V, 3.84kWh.
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
    An angled view of a rectangular display panel with blue screen segments and visible wiring, powered by the iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah.
    Exploded view of a black and yellow iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah, showing internal components and separated top cover with specs: 12.8V, 3.84kWh.
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
iTECH300US | Ultra Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah - iTechworld
An angled view of a rectangular display panel with blue screen segments and visible wiring, powered by the iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah.
Exploded view of a black and yellow iTechworld iTECH300US Ultra Slim Deep Cycle Lithium Battery with Bluetooth LiFePO4 300Ah, showing internal components and separated top cover with specs: 12.8V, 3.84kWh.

4.9

3354 reviews

iTECH300US
Ultra Slim Deep Cycle Lithium Battery
with Bluetooth LiFePO4 300Ah

Regular price
$2,299
Sale price
$2,299
Regular price
Tax included. Shipping calculated at checkout.
  • Bluetooth BMS
  • Ultra-slim at 82mm thin

REINFORCED INTERNAL

STRUCTURE

SMALLEST

INDUSTRY FOOTPRINT

ULTRA-SLIMLINE

PROFILE

BLUETOOTH
CONNECTIVITY

MASSIVE

WEIGHT SAVINGS

IEC:62619

CERTIFIED

The iTECH300US Ultra Slim is designed for installations where every millimetre counts. It fits neatly behind seats, under false floors, inside canopies, or any other tight space. Designed in Australia and refined through years of research and testing, it represents the culmination of iTechworld’s commitment to innovation. Don’t let its slender profile fool you! This 12V LiFePO4 battery delivers a massive 300Ah capacity, enough to power fridges, lighting, and other high-demand devices for extended off-grid trips, all within the smallest footprint on the market.

Reinforced Internal Structure

Whether navigating corrugated outback tracks or tackling rugged overland routes, the internal support framework has been specifically engineered to absorb shocks, impacts and vibrations that could otherwise affect the cells. Developed through extensive in-house research, this brace ensures your battery performs reliably wherever you take it.

Ultra Slimline Profile

Measuring just 82mm thick, the iTECH300US is Australia’s slimmest lithium battery, made to fit in almost any installation. It slips effortlessly under false floors, inside canopies, behind seats, and into other confined spaces, delivering full-sized power where conventional batteries just won’t fit.

Industry Leading Design

The iTECH300US’ slimline construction reduces overall size while maintaining impressive energy density, made possible by premium A-grade prismatic cells. This advanced engineering allows it to outperform larger batteries that rely on less sophisticated technology, giving reliable power in a compact form.

High Discharge BMS

The iTECH300US features a Battery Management System (BMS) capable of 200A continuous discharge and 640A peak, letting you confidently run high-demand devices such as fridges, power tools, or a 3000W inverter. Whether you’re off-grid, traveling, or running a mobile workstation, it delivers smooth and dependable energy when and where you need it.

Bluetooth Connectivity

Built-in Bluetooth allows you to monitor your battery’s key stats via the iTechworld Connect Battery Management App. You can also manage your system from up to 10 metres away, making it easy to track performance and adjust settings without being near the battery.

Weight Saving

A comparable AGM battery weighs over 160kg, while the iTECH200US is just 31.2kg, more than 125kg lighter. This significant weight reduction makes transporting, installing, and moving the battery far easier, a crucial advantage for off-grid trips or tight installations.

 

PACKAGE CONTENTS

  • iTECH300US
  • 2 x M8 bolts
  • 1 x User Guide HERE

quick stats

  • Ultra slimOnly 82mm thin
  • Prismatic cell technology10,000+ cycles @ 40% DOD
  • Heavy-duty metal casePerfect for mounting in tight spaces
  • Max discharge rate (5 seconds)640 amperes
  • Warranty5 year Australian warranty

product dimensions

  • A: Length: 562mm (580mm with terminals)
  • B: Width: 82mm
  • C: Height: 374mm

US Range User Guide

US Range User Guide

download

Australian Family Owned

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REVIEWS

4.9
Rated 4.9 out of 5 stars
Based on 3,354 reviews
Total 5 star reviews: 3k Total 4 star reviews: 313 Total 3 star reviews: 15 Total 2 star reviews: 0 Total 1 star reviews: 7
Slide 1 selected
3,354 reviews
  • Rated 5 out of 5 stars
    4 weeks ago
    iTECH300X PRO | Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300A

    Very happy with it work well. It's nice you can turn it off when not in use with the app.

    Disappointed that there is no battery try for it.

    RM
    Richard M.
    Verified Buyer
    Reviewing
    iTECH300X PRO | Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah
  • Rated 5 out of 5 stars
    4 weeks ago
    300 amp super slim battery

    Easy to install and endless power

    IC
    Ian C.
    Verified Buyer
    Reviewing
    iTECH300SS | Super Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 300Ah
  • Rated 5 out of 5 stars
    1 month ago
    Best investment so far

    By far a game changer for my prado setup. Has been my 85L upright fridge 24/7 purely from 200w solar while the car is parked up as I have a work van. Just got us through 3 days

    on Moreton, at one point running fridge, kickass water pump, 3 floodlights, awning light strips (left on all through the night), 12v oven, and charging drone batteries for an hour and barely flinched. Then Kept us cozy in the rooftop running the heated blanket on full, charging phones and light strip in the tent. Charges back up in no time even under load. Love the app really helps keep track of power usage and solar / charging behaviour. Fits neatly between rear seat and drawers. Great product even thinking of adding another in future 👍🏼

    JS
    Josh S.
    Verified Buyer
    Reviewing
    iTECH100SS | Super Slim Deep Cycle Lithium Battery | with Bluetooth LiFePO4 100Ah
  • Rated 5 out of 5 stars
    1 month ago
    160X Pro Experience

    Our choice to update to the 160X Pro was purely on the basis I required additional oomph whilst retaining standard battery box mounting in our van. We've been running the dreaded 120X since 2021 (absolutely no complaints with it personally, it's been brilliant) but our usage has increased (yes the more convenient things become the more we adapt to it), monitoring the output and input just sold us on the battery, so we took advantage of the EFY sale and ordered it.

    Installed into our van, initially it became apparent the Bluetooth monitoring wasn't fantastic, I could totally understand the negative reviews BUT shortly after Itech did an app update (obviously listening to negative feedback) and I have to say it was sooo much better. Immediately after the update the app had some glitches, I contacted Itech (feedback appreciated) followed advice given with benefits, however it's very apparent the glitch has been resolved, our battery, monitoring has been so good.

    As per usual, the Itech customer service experience has been brilliant.

    Note: Waited to post this review until after several months of use so we're providing a factual review. Truly happy, thankyou Itech.

    IW
    Ian W.
    Verified Buyer
    Reviewing
    iTECH160X PRO | Deep Cycle Lithium Battery | with Bluetooth LiFePO4 160Ah