140AH 12V AGM Deep Cycle Battery

SKU: DC-12V-140AHX
On sale! 33% off, save $133
$267.00 $399.95
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Need a complete battery kit?

Check out our bestselling 140AH AGM Battery Box Combo for a complete portable 12V setup.

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140AH 12V AGM Deep Cycle Battery - We offer FREE SHIPPING to most areas in Australia - enter your postcode above.


Whether it's for daily use or backup power, the GIANT POWER 140AH AGM battery is the right choice for you. This 140AH 12V AGM Deep Cycle Battery is a high quality Deep Cycle AGM Battery that is suitable for Saltwater/Marine applications, Caravans, Motor Homes and Camper Trailers. 140AH GIANT AGM Deep Cycle Batteries are ideal ancillary batteries to fit into your caravan, 4x4 vehicle or camper-van. The Giant Power range of AGM Deep Cycle Batteries have outstanding deep discharge recovery with high oxygen-recombination efficiency that ensures no loss of electrolytes, giving these batteries exceptional deep discharge recovery performance just in case you accidentally discharge your batteries a little too much! This also guarantees you will never need to replace electrolytes during the course of the batteries life.  Because of the rugged environments where Giant Power 140AH AGM batteries are used around Australia Aussie Batteries work closely with our customers to ensure our battery products are geared to meet your exact needs.

Giant Power Batteries are built tough, and they are designed with more lead to create stronger connections between cells and heavier plates to increase the batteries reserve capacity. Giant Power Batteries are built to maximize life cycles, so you get reliable power when you need it!

Giant Power 140AH AGM Deep Cycle Batteries are a premium quality battery that is designed to deliver industry-leading reserve capacities and life-cycle capabilities. Many innovative technologies, including a high AH ability and VO (heat resistant) rated case, make Giant Power Batteries the perfect solution for the challenging operating conditions of energy storage and other off-grid applications around Australia. The ideal combination of premium quality materials has catapulted Giant Power Batteries to becoming an Australian industry leader rated for both value and customer satisfaction. All Giant Power deep cycle batteries are backed with an industry leading 5-year warranty and have a 5-star status among Australian users because they can take a hell of a beating, both physically and power-wise.

Looking for a battery and solar setup ? Check out our range of complete Solar Kits for Camping

Why the GIANT POWER 140AH is our Best-Selling Deep Cycle Battery

  • This 140AH Battery will support most 12 Volt Setups and power requirements customers ask for.  
  • This 140Ah is compatible with most major battery boxes.
  • Industry Leading 5 Year Warranty
  • Giant Power 140AH AGM Battery has a 12 Year Designed Service Life
  • Bolt Terminal Connections
  • In-house Warranty Testing Facility
  • Australian Owned and Operated Company
  • 5 Star Reviews – Customer Reviews show the quality of GIANT POWER
  • EXPERT ADVICE FREECALL  1800 853 315  or EMAIL 

This 140AH 12V AGM Deep Cycle Battery is perfect for applications that require either frequent cycling or renewable power storage. Common uses include;

  • Running appliances when camping away from power.
  • Perfect for powering your 12V fridges, high powered inverters, lights or any other 12V appliances.
  • Excellent for use with a solar panel for charging.
  • Perfect for running in a dual battery system in a vehicle.
  • Superb for use in 4x4 and Marine Conditions.
  • Designed Service Life 12 years
  • Ideal for frequent cyclic discharge
  • Exceptional deep discharge recovery performance
  • Low self-discharge characteristic
  • We suggest adding a Battery Heat Shield for best results.

140AH 12V AGM Deep Cycle Battery Features:

yesSealed Construction (VRLA) means you can store our batteries at any angle. (All our AGM Batteries are completely sealed this means they can be stored at any angle)

140AHMaintenance Free operation this means no more refilling cells with water simply purchase and reap the benefits of a high quality AGM Battery.

135AH battery High Vibration Resistance means our batteries can withstand the toughest 4x4 conditions.

140AH batteryNon-Spillable and Non-Gassing with an in-built safety valve to keep you and your family safe by ensuring your battery is fully sealed and preventing any possible battery explosions.

12V 140AH Deep Cycle BatteryDurable AGM Plates: High purity, thick lead-calcium alloy plates ensure a long design lifespan of 12 years (for infrequent discharge @20°C).

135AH Deep Cycle BatteryCorrosion Resistant: Lead-calcium grids maintain a low self-discharge rate of approximately 3% of capacity per month.

140AH Deep Cycle BatteryQuality Copper-Silver Terminals means small contact resistance and high corrosion resistance.

AGM Batteries use glass mat technology within the battery to absorb the acid, as opposed to standard flooded batteries where the acid is free flowing. This provides several key advantages over standard batteries, they are also 100% sealed, non-gassing and maintenance free (this means your batteries will never leak acid, even if damaged), and they will provide a significantly longer service and cyclic life (up to 2-3x longer than standard batteries). If you want to run a remote power system, you'll need the right Deep Cycle Battery to keep the current flowing.

If you need reliable energy GIANT POWER12V Deep Cycle Batteries are purpose-built specifically for these long-use applications. 

  A high turnover of battery stock ensures our customers are always getting the freshest battery

**Our 48hr dispatch guarantee is subject to receipt of payment. Excluding weekends and Public Holidays. We guarantee to dispatch your order within 48HRS of payment.

*Please note installing this batter​y under your bonnet or in electric golf buggies, mobility scoorters or using with trolling motors, may void your warranty. More suitable battery types for these applications are CCA rated batteries. Need Expert Advice Please Call Our Battery Team



Grab a Multi-Buy Discount

Get 2 x Giant Power 140AH Deep Cycle Batteries and Cables.  Get $20 DISCOUNT when you Buy a Second 140AH Battery!

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Video Overview



140AH Deep Cycle Batteries for Caravans and Camping Best Prices


140AH 12V AGM Deep Cycle Battery has a rating of 4.70/5 based on 273 reviews.

140AH 12V Deep Cycle Battery.

The battery was delivered on time. I will be using the battery on my next trip to the bush commencing on the 20 May 2019. I will then be in a position to comment on the battery's performance.

on 8 May 2019


I recently purchased a battery from here and it is performing very good

on 8 May 2019

12v 140AH

Powerful battery

on 8 May 2019

Power Galore

I have recently purchased a 140AH 12 AGM deep cycle battery for a camping trip to the Victorian High Country. I had a 60 litre fridge running off the power pack, camera battery charger, LED lights and mobile phone. The battery held its charge and recharged quickly when plugged into the car, while travelling. Definitely worth the outlay.

on 8 May 2019

Happy Customer

Quick postage and awesome customer service. Product arrived damaged from courier and Aussie Batteries were quick to resolve the issue.

on 8 May 2019

140 amp hour batteries

Good they fitted in perfectly so far happy

on 8 May 2019

Off Grid Power for Caravan

Bought the 140AH battery to power the lights and external fridge for my caravan. installed all the gear myself and spent a week away camping with the family with no issues what to ever, the battery was everything as expected at a great price.

on 8 May 2019

140AH 12V AGM Deep Cycle Battery

Quick delivery, product as described and very competitive price.

on 8 May 2019

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Giant Power 12V 140AH AGM Deep Cycle Battery
Nominal Voltage 12V
Nominal Capacity (20HR) 140.0 AH
Dimension Length: 330 ±3mm (12.99 inches)
Width: 173 ±2mm (6.81 inches)
Container Height: 212 ±2mm (8.35 inches)
Total Height (with Terminal): 220 ±2mm (8.66 inches)
Approx Weight Approx 32.2 Kg
Terminal T11
Container Material ABS
Rated Capacity 140.0 AH/7.0A (20hr,1.80V/cell,25°C)
Max. Discharge Current 1200A (5s)
Internal Resistance Approx 4.9mΩ
Operating Temp.Range Discharge : -15 ~ 50oC (5 ~ 122oF)
Charge : 0 ~ 40oC (32 ~ 104oF )
Storage : -15 ~ 40oC (5 ~ 104oF)
Nominal Operating Temp. Range 25 ± 3°C (77 ± 5°F )
Bulk Charge Initial Charging Current less than 30A.
Voltage 14.5V @ 25oC
Temp. Coefficient -30mV/oC
Float Charge No limit on Initial Charging Current
Voltage 13.5V @ 25oC
Temp. Coefficient -20mV/oC
Capacity affected by Temperature 40oC (104oF) 103%
25oC ( 77oF ) 100%
0oC ( 32oF ) 86%
Self Discharge Giant Power Deep Cycle AGM batteries may be stored for up to 6 months at 25oC(77oF) and then a freshening charge is required. For higher temperatures the time interval will be shorter.


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

For more information, please read our full warranty policy

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