Giant Power 550AH 6V AGM Deep Cycle Battery

SKU: DC-6V-550AH
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Reliable Power for Demanding Applications


The 6V 550Ah Giant Power Battery AGM is the ideal solution for a wide range of high-demand applications. Engineered with advanced Absorbent Glass Mat (AGM) technology, this battery offers superior performance, longevity, and reliability. Perfect for renewable energy systems, electric vehicles, golf carts, and backup power solutions, the Giant Power Battery is designed to meet the needs of both residential and commercial users.

Key Features:

  • High Capacity: With an impressive 550 ampere-hour (Ah) capacity, this battery ensures long-lasting power, making it perfect for applications that require sustained energy delivery.
  • AGM Technology: Utilizing Absorbent Glass Mat technology, the battery provides better performance, faster charging, and improved safety compared to traditional flooded batteries. The sealed design eliminates the risk of spills and reduces maintenance requirements.
  • Deep Cycle Design: Specifically designed for deep cycle use, the Giant Power Battery can be repeatedly discharged and recharged without significant loss of capacity, making it ideal for renewable energy storage and other applications with frequent cycling.
  • Maintenance-Free Operation: The sealed AGM design means no need to check electrolyte levels or add water. Enjoy hassle-free power with minimal upkeep.
  • Durability and Safety: Built with robust materials and advanced manufacturing processes, the battery offers excellent resistance to shock, vibration, and extreme temperatures. The spill-proof design enhances safety and reliability in various environments.
  • Versatile Applications: Whether you need reliable power for a solar power system, an electric vehicle, a golf cart, or an uninterruptible power supply (UPS), the Giant Power Battery delivers consistent, dependable performance.

Deep Cycle Batteries Australia Giant Power 6V 550AH AGM batteries are designed for a more efficient discharge recovery. Faster recharging technology and battery protection deliver reliable performance. The sealed structure, copper alloy terminals and factory sealed lid allow no leakage of any caustic chemicals, and ABS intrusion-safe body and heavy-duty posts ensure reliable performance against any drastic vibrations shocks or outer wreckage. This maintenance-free battery features longer shelf-life and excellent water retention performance.


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A decade of FIVE STAR Customer Reviews showcase the quality of the GIANT POWER battery range this is a best selling Aussie battery.

Best AGM Battery Australia


Creating a 12V battery bank from 6V batteries involves connecting two 6V batteries in series. Here’s how you can do it:

Materials Needed:

  • Two 6V 550Ah Giant Power Battery AGM batteries
  • Battery interconnect cables (capable of handling the ampere load)
  • Wrench or pliers (for tightening battery terminals)
  • Safety gear (gloves, goggles)

Steps to Connect Two 6V Batteries in Series:

  1. Safety First:

    • Wear protective gloves and goggles.
    • Ensure you’re working in a well-ventilated area and that no metal tools accidentally touch both terminals at the same time, as this can cause a short circuit.
  2. Position the Batteries:

    • Place the two 6V batteries next to each other.
  3. Identify Terminals:

    • Each battery has a positive terminal (+) and a negative terminal (-).
  4. Connect in Series:

    • Connect the negative terminal (-) of the first battery to the positive terminal (+) of the second battery using a battery interconnect cable.
  5. Check the Connections:

    • Ensure all connections are tight and secure to prevent any loose connections which can cause resistance and heat.
  6. Output Terminals:

    • The free positive terminal (+) of the first battery and the free negative terminal (-) of the second battery are now your 12V output terminals.
    • Connect your load or the next component in your system to these terminals.


By connecting the batteries in this manner, the voltages add up while the capacity (Ah) remains the same. Therefore, you now have a 12V battery bank with a capacity of 550Ah.

Important Tips:

  • Balancing: Ensure both batteries are of the same type, age, and charge level to avoid imbalances.
  • Monitoring: Regularly check the voltage and state of charge of each battery to ensure they are balanced.
  • Maintenance: Even though AGM batteries are maintenance-free, periodically inspect for any signs of wear, corrosion, or damage.


This 12V battery bank can be used for various applications such as:

  • Renewable energy systems (solar, wind)
  • RVs and marine systems
  • Backup power supplies
  • Electric vehicles and golf carts

By following these steps, you can successfully create a 12V battery bank from two 6V batteries, providing a reliable and powerful energy source for your needs.


A 6V 550Ah battery refers to a battery that has a nominal voltage of 6 volts and a capacity of 550 ampere-hours (Ah). Here’s a breakdown of what this means:

Voltage (6V)

  • Voltage (V): Voltage is the electrical potential difference between two points. In this case, the battery provides 6 volts. This is typical for certain types of lead-acid batteries, often used in golf carts, solar power systems, and other applications requiring deep-cycle batteries.

Capacity (550Ah)

  • Ampere-Hours (Ah): Capacity is the amount of charge a battery can hold. It is measured in ampere-hours (Ah), which indicates how many amperes a battery can supply over a specific period (usually an hour). For a 550Ah battery, it means the battery can deliver 550 amperes for one hour, 275 amperes for two hours, 55 amperes for ten hours, and so on, under ideal conditions.


6V 550Ah batteries are commonly used in applications where long-lasting, reliable power is required. These applications include:

  • Renewable Energy Systems: Used in solar and wind power storage systems.
  • Golf Carts: Providing power for electric golf carts.
  • Electric Vehicles: Suitable for certain types of electric vehicles.
  • Backup Power: Used in UPS (Uninterruptible Power Supply) systems for backup power.
  • Marine: Powering boats and other marine equipment.


  • High Capacity: With 550Ah, these batteries can store a significant amount of energy.
  • Deep Cycle: They are designed to be discharged and recharged multiple times without degrading quickly, making them suitable for applications where they will be regularly drained and recharged.


  • Size and Weight: These batteries can be quite large and heavy, so it's important to ensure you have the appropriate space and handling equipment.
  • Maintenance: Lead-acid batteries often require maintenance, such as checking electrolyte levels and ensuring proper charging.

When selecting a 6V 550Ah battery, it's important to ensure that it matches the voltage and capacity requirements of your specific application. Additionally, consider factors such as the battery's physical dimensions, weight, maintenance needs, and expected lifespan.

The Advantages of AGM batteries:

1. AGM Batteries deliver a higher output

AGM batteries have a lower internal resistance than any other lead acid battery. This enables AGM batteries to provide high bursts of power when required such as starting an engine or providing emergency or backup power.  AGM’s also have high charge acceptance.

2. AGM Batteries are spillproof

AGM batteries do not have any free electrolyte in the cell as is it suspended in the glass mats. Placing the battery upside down is not not recommended.

3. AGM Batteries are durable

AGM batteries are designed to be sturdy, handling vibration particularly well. The plate groups are compressed into each cell; this compression holds everything together.. They are also resistant to a condition known as acid stratification, where the acid and water separate over time.

4. AGM Batteries are resistant to vibration

The electrolyte soaked glass mats in between each lead plate act like a damper. The plates are compressed between the mats making AGM batteries highly resistant to vibration. This makes them suitable for vehicles that operate in high vibration conditions (i.e. ATVs, 4WDs & SUVs).

Charging Your AGM Battery

We Suggest The PROJECTA PRO-CHARGE RANGE simply connect the battery with the clamps or fixed eyelet harness and plug the charger into a wall for fast and efficient charging.

AGM batteries are very sensitive to overcharge and over-discharge, improper charging and discharging will lead to the reduction of battery life. So the proper charging process is very important. An AGM battery can last years in your car, boat or RV, and keeping it charged with the right battery charger is the best way to make sure you get the most life from it. On regular basis at 25°C for 12V deep cycle AGM batteries, float charge voltage is 13.5V~13.8V, cycle charging voltage is 14.4V~15.0V. 

DC-DC Charging For AGM Batteries

Why not look at a DC to DC charger that is suitable for LiFePO4 and lead acid: AGM, Gel & Calcium Batteries, and allows you to re-select the battery during charging. With the memory function of this battery to battery charger, you don't need to re-select the same battery type every time.


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Using 6V batteries instead of 12V batteries can offer several advantages depending on the specific requirements of your application. Here are some reasons why you might choose 6V batteries over 12V batteries:

Greater Flexibility in Configurations

  • Customization: Using 6V batteries allows more flexibility in configuring battery banks to meet different voltage and capacity needs. You can connect 6V batteries in series to achieve various voltages (e.g., 12V, 24V, 48V) while maintaining the same amp-hour rating.
  • Scalability: It's easier to scale up or down your system by adding or removing 6V batteries to match the required voltage.

Improved Performance and Longevity

  • Deep Cycle Performance: 6V deep cycle batteries are often designed for better discharge and recharge cycles compared to many 12V batteries. They typically have thicker plates, which can lead to longer life and better performance in deep cycle applications.
  • Capacity and Durability: 6V batteries often provide higher capacity and durability for the same physical size when compared to 12V batteries. They can handle deep discharges more effectively, which is critical for applications like solar power systems and RVs.


  • Replacement and Maintenance: If part of a 12V battery bank fails, you only need to replace the defective 6V battery rather than a larger, more expensive 12V battery. This can reduce overall maintenance costs.
  • Investment in Quality: Investing in high-quality 6V batteries can sometimes be more cost-effective in the long run due to their longevity and reliability, despite the initial investment being similar or slightly higher.

Weight Distribution

  • Easier Handling: 6V batteries are generally lighter and smaller than their 12V counterparts. This makes them easier to handle, transport, and install, especially in tight spaces or mobile applications like RVs and golf carts.

Application-Specific Advantages

  • Golf Carts and RVs: These applications often use 6V batteries because they can be configured to optimize space, weight distribution, and power requirements more effectively.
  • Solar Power Systems: In off-grid solar power systems, 6V batteries are preferred for their ability to handle deep cycling and long periods of low charge without deteriorating quickly.

Redundancy and Reliability

  • Redundancy: Using multiple 6V batteries can provide redundancy. If one battery fails, the system can often continue to operate (albeit at reduced capacity), which is crucial for applications where reliability is critical.
  • Balancing Loads: Smaller individual batteries can help in balancing loads more efficiently across the battery bank, ensuring even discharge and recharge cycles.

Using 6V batteries instead of 12V batteries can offer greater flexibility, improved deep cycle performance, potential cost savings in the long run, easier handling, and application-specific benefits. These advantages make 6V batteries a preferred choice in many scenarios, especially where reliability and efficiency are paramount.


Using 6V AGM (Absorbent Glass Mat) batteries for off-grid systems is a popular choice for several reasons. Here’s an overview of why these batteries are particularly suitable for off-grid applications:

Deep Cycle Performance

  • Design for Deep Discharges: 6V AGM batteries are often designed specifically for deep cycle use, meaning they can be regularly discharged to a significant extent and then recharged without suffering significant damage or reduction in capacity. This is essential for off-grid systems where batteries often need to provide power over extended periods and be deeply discharged.

Higher Capacity and Durability

  • Thicker Plates: 6V batteries typically have thicker plates compared to 12V batteries, which leads to better durability and longer lifespan. This is particularly important in off-grid setups where reliability and longevity are crucial.
  • Higher Amp-Hour Capacity: 6V batteries can offer higher amp-hour capacities, which means they can store more energy and provide longer periods of power without recharging, ideal for off-grid systems that rely heavily on stored energy.

Flexibility in System Design

  • Customizable Voltage: By connecting 6V batteries in series, you can easily configure the voltage of your battery bank to match your system’s requirements (e.g., 12V, 24V, 48V). This flexibility allows for customized solutions that can optimize performance and efficiency for specific off-grid applications.
  • Scalability: It is easier to scale the system up or down by adding or removing 6V batteries, providing a cost-effective way to expand capacity as needed.

Maintenance-Free Operation

  • AGM Technology: AGM batteries are sealed and maintenance-free, which means there is no need to add water or check electrolyte levels. This is a significant advantage for off-grid systems, especially in remote locations where regular maintenance might be challenging.
  • Spill-Proof and Safe: AGM batteries are spill-proof and can be mounted in various orientations, providing safer operation and installation flexibility.

Enhanced Performance in Extreme Conditions

  • Temperature Tolerance: AGM batteries perform well in a wide range of temperatures, making them suitable for off-grid systems exposed to varying environmental conditions.
  • Resistance to Shock and Vibration: AGM batteries are more robust and resistant to shock and vibration compared to flooded batteries, ensuring reliable performance in off-grid applications.

Longevity and Reliability

  • Long Cycle Life: 6V AGM batteries often have a longer cycle life, meaning they can go through more charge and discharge cycles before their capacity significantly diminishes. This is critical for the sustainability of off-grid systems.
  • Reliable Power Supply: With their high capacity and deep cycle capabilities, 6V AGM batteries provide a reliable and consistent power supply, crucial for off-grid living where dependable energy storage is vital.


  • Lower Total Cost of Ownership: Despite a potentially higher initial cost, the long lifespan, low maintenance, and reliability of 6V AGM batteries can result in a lower total cost of ownership over time.
  • Reduced Maintenance Costs: The maintenance-free nature of AGM batteries reduces ongoing maintenance costs and efforts, which is beneficial in remote or hard-to-access off-grid locations.

6V AGM batteries are an excellent choice for off-grid systems due to their deep cycle performance, higher capacity, flexibility in system design, maintenance-free operation, enhanced performance in extreme conditions, longevity, reliability, and overall cost-effectiveness. These attributes make them well-suited to meet the demands of off-grid living, ensuring a stable and reliable power supply even in remote or challenging environments.

AGM batteries can resist damage from extreme temps and vibration.

The absorbed mats give AGM batteries a sponge-like resistance to vibrations. A regular car battery’s sensitive internal components can break apart if you shake it hard enough. Its lead plates are hanging from a sturdy metal in liquid. Even if you don’t break the plastic case, it’s common for car batteries to die if you rattle them hard enough. an AGM battery’s fiberglass mesh keeps that water trapped because it’s packed so tightly to the lead plates. On top of that, the sealed design holds the water vapor in, and only if you overcharge it will a molecules of water vapor escape. An AGM battery’s sealed, spillproof design allows them to pass the specific transportation regulations. You can ship them by air, deliver them by mail, etc. It might be odd to think of spilling a car battery, but you should understand that standard car batteries are not as durable as AGM batteries. They’re more like a full cup of water with a sippy cup lid. If you turn it over, it spills or leaks. AGM batteries are more like sealed soda cans. You can transport them, and they won’t spill or leak if turned on their side. 

AGM batteries have special valves that protect their service lifespans.

AGM batteries also have valves regulating the hydrogen and oxygen allowed to escape during charging. They fall under a broader category of valve-regulated, lead-acid (VRLA) batteries, also called maintenance free. If you’ve never thought much about maintaining your car battery, it might be thanks to this special one-way valve that essentially keeps evaporated water from leaving the battery case. The battery’s fundamental chemistry is still based on lead, sulfuric acid and water. When you draw power, the acid molecules move to the lead plates, leaving water and lead sulfate — and sending an electrical charge out of the positive post. Removing the sulfuric acid from the solution creates a chemical reaction between the paste on the plates. Recharging a battery works in reverse: Electricity goes in, making the liquid more acidic.

AGM batteries recharge faster than regular batteries.

Fiberglass mesh mats soaked in electrolyte carry current faster than liquid electrolyte. Yes, that’s how AGM batteries can deliver big bursts of power even if they’re drained. It’s also how AGM batteries recharge faster than regular batteries. That low internal resistance means AGM batteries can give more amps and accept more amps when they recharge.

Standard batteries need more voltage than AGM batteries to recharge because regular batteries have higher internal resistance. To keep them from overheating, they can only take a few amps at a time at that high voltage.

This means AGM batteries need a special AGM charger. They can take a lot of amps in a short period of time — but an AGM battery charger must keep its voltage lower than 14 volts to avoid ruining the AGM battery. AGM batteries are 12 volts, like all car batteries, and can handle some higher voltage, but only up to a certain point. If a car alternator charges an AGM battery with a voltage higher than 15 volts, it can damage an AGM. 

Highest Quality Engineering

AGM batteries are a kind of valve-regulated, lead-acid (VRLA) battery, which is part of why AGM batteries last so long. VRLA batteries have a one-way valve regulating how much hydrogen and oxygen can escape when the battery recharges. Normally, when a standard battery recharges, electricity splits the water in the electrolyte into hydrogen and oxygen, which mostly gets absorbed back into the electrolyte. The rest of the hydrogen and oxygen escapes through vents in the case, and the battery loses water. Water loss can kill a car battery, and that’s why you should occasionally refill your standard batteries with distilled water. You don’t have to maintain VRLA batteries the same way. Their one-way valves keep the gases in the battery, effectively preventing water loss.

Benefit From Proven Performance

AGM batteries hold their charge well and are less likely to sulfate when compared to regular wet cell batteries (conventional batteries types). Because of this, they are an excellent choice for vehicles that require off-season storage. AGM batteries can be mounted in more flexible orientations than conventional batteries because the liquid is sealed inside the battery. Because the liquid electrolyte flows freely inside conventional batteries, they must be mounted and stored upright to prevent leakage. Another advantage of the electrolyte being absorbed and held by a separator suspended inside the battery is that it is more resistant to vibration, a vital plus for 4WDs or other vehicles that operate on uneven surfaces.

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While both AGM and Lithium batteries provide reliable power, here are some notable differences that set them apart:

  • AGM batteries are more affordable than Lithium batteries.
  • AGM batteries have a shorter cycle life compared to Lithium.
  • AGM batteries can only be discharged to 80% Depth of Discharge (DoD) while Lithium Iron Phosphate batteries can be discharged to 100% DoD in an emergency.
  • Lithium batteries are approx. 50% lighter in weight compared to AGM batteries.
  • Lithium batteries have an active Battery Management System (BMS) which will shut down the battery to protect it if the temperature, voltage or current is outside the nominated range.

When it comes to deciding between an AGM Battery and a Lithium Battery, the application, intended use, expected life expectancy and budget play a major role - both Lithium and AGM are excellent deep cycle battery choices as they deliver excellent performance and efficiency at a competitive price.

AGM Deep Cycle Battery Australia


Australian Made AGM Deep Cycle Battery Giant Power

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Giant Power 6V 550AH AGM Deep Cycle Battery
Cells Per Unit 3
Voltage Per Unit 6
Nominal Capacity 550Ah@C100 to 1.75V per cell @25ºC
Dimension Length: 295 ±2mm
Width: 178 ±2mm
Total Height (with Terminal): 425 ±2mm
Approx Weight Approx  57.5 Kg (Tolerance ± 1.5%)
Max Discharge Current 4000A (5 Sec)
Internal Resistance Approx 1.1mΩ
Operating Temp.Range Discharge : -20 ~ 60oC
Charge : 0 ~ 50oC
Storage : -20 ~ 60oC
Nominal Operating Temp. Range 25°C ± 5°C
Float Charging Voltage 6.8 VDC/unit Average at 25oC
Max Charging Current Limit 60 A
Equalization and Cycle Service 7.3 (7.4 for equalization) VDC/unit Average at 25oC
Self Discharge Giant Power batteries can be stored for more than 6 months at 25ºC. Self-discharge ratio less than 3% per month at 25ºC. Please charge batteries before using.
Terminal Terminal F14/F22
Container Material A.B.S UL94-HB, UL94-V0 Optional

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

Giant Power 550AH 6V AGM Deep Cycle Battery has a rating of 4.94/5 based on 16 reviews.

Deep Cycle Batteries

Great service and support from the team at Aussie Batteries & Solar.

on 8 February 2023


Excellent for my solar system. Will be buying more at a later date. Thanks Aussie Batteries.

on 15 December 2022

Set up for a family in need.

I support several families doing it rough. One of my friends put the ideas together and I paid for the equipment to create an off-grid solar set-up. They now have constant power for their fridge, freezer, washing machine, lights, etc. As much as possible we buy in Australia for our supplies. It was a good break to get our battery bank a lot cheaper than we expected. The guy who put it all together was happy with the quality of what we purchased. You guys will definitely be our first port of call for our next project. Cheers

on 7 April 2022

Plenty of grunt

I purchased four of these 550AH, 6v batteries to put in series for my 24V system 6 weeks ago, so far I'm very happy with this bank. I live off grid (alone) with most of my power needs being low voltage (24v), lighting, fridg/freezer, fans ect, but i do use 240v for washing machine, stereo, vacuum and the like, so far I have not drawn down more than 4% even following 2 days of minimal sun, will be interesting to see how they perform in the winter. could not be happier with the service and prompt delivery these guys gave.

on 10 March 2022


Working well thanks so much.

on 26 January 2022
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