Giant 12V 140AH Lithium Battery LiFePO4 Deep Cycle Battery Australian Made

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Giant Power 140Ah Lithium (Lifepo4) Deep Cycle Battery with 100A BMS 

 'Australian Made' Lithium Batteries - Easy to Carry - Lightweight


Don’t Let a Flat Battery Ruin Your Camp Trip! Run Your Electronics Anywhere, At Anytime! The cutting-edge Australian Made Giant Power 140AH Lithium Battery (LiFePO4) is here to transform your 12V setup.

A Giant Power 140Ah Heavy Duty Lithium Deep Cycle Battery is ideal for storing solar energy and LiFePO4 are the most popular lithium deep cycle battery for Camping, Caravans, RV's, 4WD, Marine and 12 Volt power. 

140Ah Australian Made Lithium Battery 5 year battery warranty - 12 month full replacement warranty with 48 month pro-rata replacement warranty

With unrivalled performance, longevity, and reliability, a Giant 140AH Lithium Battery is the perfect price point and choice for various power applications. Giant prismatic lithium cells are UL1642 certified and comply with IEC62619 standards.

100Ah Australian Made Lithium Battery

Giant Power Australian-Made Lithium Batteries have a superior 100AMP BMS (Battery Management System). Will charge up to 5x faster than lead-acid batteries. 5-Year Warranty & include an Active Cell Balancer that increases system run-time and efficiency.


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Giant Power 140Ah lithium (LiFePO4) deep-cycle batteries are dependable and long-lasting, with exceptional performance and international IEC62619 certification this Giant 140AH lithium deep cycle battery weighs less than half of a Lead Acid or AGM battery. Giant 140Ah lithium batteries are prismatic LiFePO4 and considered an Aussie lithium best of best battery due to their safety, long lifespan, and high energy density. 

  • 140AH 12V Lithium Battery
  • Designed to replace AGM Batteries
  • 330mm L x 173mm W x 220mm H
  • 12.4kg(approx)
  • Inbuilt battery management system 100A
  • 5 Year Aussie Warranty
  • Lithium-ion LiFePO4 
  • Prismatic Cell Design
  • IP65 Rating highest level of dust protection
  • ASIEC62619 Compliant 
  • Heavy-duty removable M8 terminals
  • Maintenance-free
  • Lifting handles fitted to ensure a secure hold when moving
  • Australia Made Lithium Battery
  • Charge Efficiency: a LiFePO4 battery will reach full charge in 4 hours.
  • Self-discharge rate when not in use: Only 2%
  • Runtime is higher than lead acid batteries/other lithium batteries.


 **This battery will work with trolling motors. However, if you allow heat, fluids and other contaminants to damage the battery, unfortunately, it will void your warranty. Protect your battery via a quality waterproof marine battery box or weather enclosure. 

140Ah Lithium Battery Specifications

100Ah Heavy Duty Lithium Deep Cycle Battery

Upgrade AGM to Lithium Power

Are you thinking of replacing the AGM deep cycle batteries in your camper, RV, caravan or campervan? Then it might be time for a Lithium battery upgrade. Giant Power Lithium Batteries are designed as a true drop in replacment and every cell is protected by an internal 100AMP Battery Management System (BMS), with the control board protecting the batteries from cell imbalance and high voltage situations, giving users a longer battery life. Giant Power batteries are the perfect choice for any application that requires a deep-cycle power supply. This high-quality lithium battery delivers reliable 12V power.


The Giant 140AH 12V Lithium Deep Cycle Battery is designed to replace deep-cycle AGM batteries. Lithium Batteries weigh only half of their AGM counterparts. In an emergency, this Australian-made lithium battery can be safely discharged to 100% DOD (Depth of Discharge), delivering twice the energy with a superior 100AMP BMS for maximum discharge capacity. A Giant 140AH Lithium deep cycle battery is also best used in various power applications such as power tools, medical devices, and security systems. Aside from recreational activities, Giant Lithium Batteries are perfect for backup power during an electrical blackout as with an added Ardent 12V Battery Box you get a backup power system. 

Charging Your Lithium Battery

Giant Lithium Batteries don’t immediately need a special battery charger! Using your AGM battery charger is a temporary solution, not a permanent one. Wherever possible, a lithium battery should be charged using a charger with a lithium profile;  the nominal charge voltage for a 12v AGM battery is 14.1-14.4V, which means that using an AC to DC AGM battery charger that does not have automatic desulfation or equalisation modes and set to use the AGM setting will work correctly. However, it will only get your lithium battery to 95% charged.

We Suggest The Ardent 12V Battery Charger:

12V Lithium Battery Charger

DC-DC Charging For Lithium Batteries

Regarding DC-DC Chargers and solar controllers, you must change these to LiFePO4-specific models, which can charge your Lithium batteries to an entire 100% State of Charge. The advantage of using a LiFePO4 charge profile is that it allows users to get the total capacity out of their lithium battery, as the DC-DC LiFePO4 setting will prolong the battery life. You need a DC-DC charger to effectively manage the power input in a lithium battery. **If you are charging from an alternator, you will need a DC-DC Charger that is designed to manage solar specific to lithium (LiFEPO4).

 ** This Giant Power battery is ideal for up to a 1200W inverter. If you exceed this limit, it could damage the BMS Management inside the battery. If you need a battery for a larger inverter size, please please freecall our experts or look at a larger battery size with a 200AMP BMS 

Adventure Awaits with Reliable Australian Made Lithium Battery Power!

This 140Ah deep-cycle lithium battery is constructed from the highest quality materials, designed and manufactured in Australia for use with caravans, camper trailers, motorhomes, 4WD, boats, yachts, trucks and everything in-between. This 140AH Battery will operate flawlessly in extreme heat and will handle heavy vibrations usually associated with corrugated roads. The Giant Power 12V 140Ah Lithium Battery with Grade-A Prismatic LiFEPO4 Lithium Cells & includes Active Cell Balancing technology. This Giant Power 140Ah lithium (LiFePO4) deep-cycle battery is dependable and long-lasting, with exceptional performance.

Australian Made Lithium Batteries

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For Expert Advice — CONTACT US

Lithium Deep Cycle Battery Australia

Buy Australian Made Lithium Batteries

 Our customers get a 5 YEAR AUSSIE BATTERY WARRANTY ! Australian law ensures that Australian-Made products come with guarantees and warranties that protect the consumer. This might not be the case with imported products where customer service and warranty claims can be much more difficult and unsatisfactory. Buy Aussie Made, Owned & Operated. 

Don't Get Left in the dark with a 140Ah Lithium Deep Cycle Battery Solution! Light your nights and power your days! The cutting-edge Australian Made Giant Power LiFePO4 140AH Lithium Battery is here to transform your 12V battery setup. No more lugging around heavy batteries or dealing with complicated installation processes.

Lithium Battery Manual

What is a 100AMP BMS ?

Unfortunately, our customers are too often burnt by cheap Lithium battery failures exposing themselves and their assets to harm. Most cheaper lithium battery competitors will only have a 50AMP BMS (Battery Managment System), which will not give Aussie customers the ideal battery use capacity. A high-quality BMS system should be rated 100AMP and above, and the BMS is essential to getting a quality lithium battery product and the key to your batteries long-term performance. It's a classic case of paying for what you get; the best quality lithium battery brands are the ones that cost money and have a superior size BMS and Australian Warranty. Many of our customers' applications require Lithium Batteries with higher surge currents. Giant Power LIFEPO4 Lithium Batteries have a built-in Active Balancer separate from the 100AMP BMS (Battery Management System); the Active Balancer will monitor and transfer current between cellsensuring they are better balanced and it improves your 140AH lithium battery cell life efficiency. Giant Power Batteries are Australian Made Lithium Batteries with superior lithium prismatic cells that are perfect for larger capacity applications. Giant Power Lithium Batteries are designed to withstand Australia’s harshest camping, caravan, 4WD and marine conditions. This 140Ah lithium deep cycle battery is the perfect replacement or upgrades from a traditional AGM lead-acid battery. Giant Power Australian Made 140AH Lithium Batteries are a breakthrough in Australian Made Deep Cycle Battery technology. Giant Power Lithium batteries are built using quality A-grade prismatic cells, giving high-quality conductivity and guaranteeing a superior LiFePO4 battery that is much stronger and more vibration resistant. The Giant Power Range of Lithium Batteries and our 140AH Lithium is the best of the best in Australian Made Lithium batteries and one of the lightest and most energy-efficient lithium batteries currently on the Australian market.

12V 140AH Lithium LiFePO4 Battery - Giant Power 

140Ah Lithium Battery Australia

Perfect for Use in a Range of Power Applications

Giant Power 140AH Lithium Deep Cycle Batteries are lightweight with huge power capacity. Giant Power has a range of Lithium Deep Cycle Battery options that deliver long-lasting power and are built to survive and thrive in Australia's toughest conditions! Giant Lithium Deep Cycle Batteries allow you to power all your additional camping accessories like portable fridges, camping lights, and a range of other devices that you may take camping or when you hit the road in your 4WD, RV, camper, caravan, boat. The highest quality 100A Battery Management System protects this Giant Power 140AH Lithium Battery. Giant Power Batteries are perfect for Australian customers looking for a quality lithium deep cycle battery that is Australian-made and powerful enough to keep your campsite, 4WD, RV, Marine or Caravanning trip running perfectly.

How to Wake-Up a Lithium Battery In Safe-Mode 

Giant Power Australian-Made 140AH LIFEPO4 batteries can be charged with 240V chargers, lithium DC/DC or solar panels & include an Active Cell Balancer that increases the battery lifespan.

Giant Power Lithium Batteries Are the Perfect Upgrade for Your Setup

Giant 140AH Lithium Batteries have a higher energy density, voltage capacity and lower self-discharge rate than other rechargeable batteries. This makes for better power efficiency. Giant LiFePO4 batteries store three to four times the electrical energy of conventional AGM batteries of similar size and weight. The other advantage of LiFePO4 batteries is they do not have any adverse health or environmental risks, as the cathode material is not hazardous. Unlike gel or lead-acid batteries, the Giant Power Range of Australian Made LiFePO4 batteries is exceptionally portable and has a longer use-life.

  • 5-Year Pro-Rata Warranty
  • 50% lighter than Lead Acid and AGM
  • For weight-sensitive and/or high-vibration
  • Easy Upgrade from AGM Deep Cycle Battery
  • Easy replace AGM with Giant Lithium
  • Saved weight; and increased usable power
  • Runs in Series Connection
  • Giant Lithium gives double the usable power

Using forward-thinking technology that powers electric car giants like Tesla, the Giant LiFePO4 battery range is designed to withstand any damage without exploding, keeping you and your family and friends safe in any event when you're out exploring on your Aussie adventures you will have reliable battery power!

Reliable Lithium Power

Giant Deep Cycle Batteries feature an internal 100A BMS (Battery Management System) to limit discharge, manage cut-off voltage, and protect the inner battery cells. Giant Lithium Deep Cycle Batteries are the best Australian Made deep cycle batteries. They are perfect for virtually any application where you typically use large lead-acid or AGM batteries for reliable 12V power.

They may look reasonably similar to AGM batteries, but internally the Giant Lithium is a different, next-generation concept. Giant lithium deep cycle batteries are made up of prismatic LiFePO4 cells, which are in mass production for many portable devices. The built-in internal battery management system (BMS) within each Giant Battery ensures all the battery cells are uniformly charged and discharged. It provides short circuit, over-current, and reverse polarity protection. This provides you with more protection than a traditional AGM deep-cycle battery.

Run Giant Lithium Batteries in Series

Giant Lithium batteries are used worldwide, and Aussie Batteries work closely with our customers to ensure our battery products are geared to meet your exact needs.**Lithium batteries are not recommended for cranking applications.

Highest Quality Engineering

Giant Lithium Deep Cycle Batteries are ideal ancillary batteries for your caravan, 4x4 vehicle, camper-van, RV or other camping setups. The Giant Lithium range of Deep Cycle Batteries has an exceptional deep discharge ability, and Giant LiFePO4 batteries are available in capacities ranging from 75AH to 400AH.

Benefit From Proven Performance

Giant Lithium Deep Cycle Batteries are perfect for getting reliable power for Camping, Caravan, Camper Vans, Camper Trailers, Motorhomes, Marine, 4WDs, RVs & Off-Grid Solar. Giant Lithium (LiFePO4) batteries are fast charging, feature a long lifespan, are lightweight and have low maintenance. You’ll spend less time thinking about your power and more time kicking back or exploring. Unlock a whole new world of free camping opportunities! Get double the power in a compact, lightweight form with the Giant 12V Australian Made Lithium Battery LiFePO4 range. Aside from recreational activities, it's perfect for storing at home and backup in a power outage. Use this with a lithium battery charger to maximize usable capacity. Upgrade your camping experience and get one for yourself or browse through our range of lithium batteries for more portable power.

Giant Power Lithium Deep Cycle Batteries

Australian Made Lithium Batteries

100AH Lithium Deep Cycle Battery Online Designed for Off Road and Heavy Duty Applications

Perfect for use in caravans, marine, camping and home storage off grid applications. Solar, wind or battery charger compatible. Designed to handle the vibration when off road.

100AH Lithium Deep Cycle Battery Online Run in Series

Run Giant lithium deep cycle batteries in series and boost the time they can run for before needing a recharge.

100AH Lithium Deep Cycle Battery Online Portable Power Solutions

Giant batteries are lightweight, when compared to many other options, and have built in carry straps, which make moving around the campsite easy.

100AH Lithium Deep Cycle Battery Online Quality Copper-Silver Terminals

Quality Copper-Silver Terminals means small contact resistance and high corrosion resistance.

100Ah Lithium Battery FAQ

Giant Lithium Batteries are easily rechargeable using a 12V Solar Panel or DC/DC Charger. With the right connections, you can even charge the battery while you are driving. The battery’s internal 100AMP Battery Management System helps to ensure safe and accurate operation of the prismatic cells within. It will protect you from overcharge, under discharge as well as temperature issues by monitoring each cell closely during normal use.

Australian Made Lithium Deep Cycle Battery Giant Power

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For Expert Advice — CONTACT US

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** This Giant Power battery is ideal for up to a 1200W inverter. If you exceed this limit, it could damage the BMS Management inside the battery. If you need a battery for a larger inverter size, please please freecall our experts for the best advice or look at a larger battery size with a 200AMP BMS for more discharge.

** Lithium Batteries much like your phone battery are sent in a discharged state - so you must charge before their first use. A new battery has to be completely charged before first use for the optimal battery life and increased performance.

Battery voltage matters for a variety of reasons. Namely, it allows you to determine how much power your battery is capable of supplying, how much voltage you need for certain electronics, and even the charge state. Measuring battery voltage is important because it allows you to determine the battery’s state of charge. The best way to do this is with either a multimeter or a battery monitor, or shunt setup such as the Victron Energy Battery Monitor BMV-712 or Ardent Smart Shunt.

12V Deep Cycle batteries, you should set your charger profile to charge up to 14.6 volts for 30 minutes and then float charge at 13.6 volts. For a 12V system, we really want to emphasize reaching 14.2V – 14.6V for bulk and absorption and float to be 13.8V or lower.  That means a 12-volt lithium battery will boast a normal maximum voltage of 13.6 volts when fully charged. And even after discharging 10% of their nominal capacity, they still have 13.4 volts at resting voltage (a loss of only 0.2 volts). ***Note that all 12V batteries above 12Ah, configured in Series, must be charged individually with a 12V charger.

LiFePO4 (Lithium Iron Phosphate) batteries solve several problems associated with traditional deep cycle battery technologies:

  1. Safety: LiFePO4 batteries are considered much safer than other lithium-ion battery chemistries. They have a stable chemistry and are less prone to thermal runaway, which reduces the risk of fire or explosion. This makes them suitable for applications where safety is critical, such as electric vehicles (EVs) and energy storage.

  2. Long Cycle Life: LiFePO4 batteries have a significantly longer cycle life compared to other lithium-ion batteries. They can endure a large number of charge-discharge cycles without significant capacity degradation. This makes them ideal for applications that require frequent cycling, such as electric vehicles, renewable energy storage, and backup power systems.

  3. High Power Density: LiFePO4 batteries offer high power density, enabling them to deliver high levels of power output. They can handle high discharge rates without experiencing a significant voltage drop, making them suitable for applications that require bursts of power, such as electric vehicles and power tools.

  4. Wide Operating Temperature Range: LiFePO4 batteries can operate efficiently in a wide range of temperatures, from extreme cold to high heat. They perform well even in low-temperature conditions, making them suitable for applications in cold climates.

  5. Environmental Friendliness: LiFePO4 batteries are considered more environmentally friendly compared to other battery chemistries. They contain non-toxic materials and do not include heavy metals like lead or cobalt, which are commonly found in other battery types. Additionally, LiFePO4 batteries have a higher energy efficiency, which contributes to reduced greenhouse gas emissions when used in renewable energy storage systems.

  6. Fast Charging Capability: LiFePO4 batteries can be charged at a faster rate compared to other lithium-ion batteries. They can accept a high charging current without compromising safety or cycle life. This feature is particularly beneficial in applications where quick charging is essential, such as electric vehicles and portable electronics.

  7. Maintenance-Free: LiFePO4 batteries do not require regular maintenance, such as electrolyte refilling or memory effect prevention. They have a low self-discharge rate, which means they can retain their charge for longer periods, reducing the need for frequent recharging.

These advantages make LiFePO4 batteries a preferred choice for various applications, including electric vehicles, renewable energy storage, power systems, marine applications, and off-grid power systems, where safety, longevity, high power output, and reliability are crucial factors.

How long do Giant Lithium Batteries last? 

Through extensive cycle testing, we have determined that, after 4,500 complete discharge cycles in extreme conditions, our lithium batteries will have 85% battery life left. The average user not operating their battery in extreme conditions will have 90% battery capacity after 5,000 cycles. Charging and discharging your Giant Batteries every day would last you between 15 and 20 years.With a 5-year pro-rata warranty, our lithium batteries will keep you powered for years. 

5 year battery warranty - 12 month full replacement warranty with 48 month pro-rata replacement warranty

Overall, LifePO4 batteries have the safest lithium chemistry. Why?

Lead acid, and most other battery types don’t have the level of thermal and structural stability that LiFePO4 does. LiFePO4 is incombustible. It can withstand high temperatures without decomposing. It’s not prone to thermal runaway and will keep cool at room temperature. If you subject a LiFePO4 battery to harsh temperatures or hazardous events (like short-circuiting or a crash), it won’t start a fire or explode. This fact comforts many of our customers who use deep-cycle LiFePO4 batteries daily in an RV, boat, caravan, or camping application. 


For more information, please read our full warranty policy

Giant 12V 140AH Lithium Battery LiFePO4 Deep Cycle Battery Australian Made has a rating of 4.83/5 based on 150 reviews.

Great service

what great pleaser to purchase products from this company, from information to buying everything was so easy and extremely fast. So thanks guys

on 7 June 2024

Great company, great lithium batteries

I have bought 3, 140ah lithium batteries. First I bought 2 for the caravan and was so impressed I bought one for spare battery in car. Easy to order and great communications, I have no problems in recommending this company. I have now had the caravan batteries for approximately 1yr.

on 17 October 2023

Just saved all my meat

Awesome. I set myself up with a 140ah lithium Giant Battery with the Ardent 1200w inverter with a 300w panel for when tshtf. This just saved me yesterday with a long power outage, this battery (with some help from a 300w panel and a 2000w generator) ran my house fridge/freezer and tuckerbox chest freezer with little fuss but with some close management. This setup runs rings around my other AGM deep cycle with a home made box and ebay inverter. Its expensive but worth it. Saved the half a cow and side of sheep i got in the freezer. Will be buying another one in the near future, 3 is 2, 2 is 1 and 1 is none.

on 4 October 2023

Giant 140amp/h lithium batteries

Great batteries, heaps of power in reserve with 2x140ah lithium batteries

on 3 October 2023


I purchased 2 x 140 ah lithium batteries to replace the 120ah agm’s and am more than happy with their performance. They were a far better option than the 1 x 200 ah most suggested. Easy swap with not modifications to the existing battery holder

on 1 October 2023
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