Deep Cycle Batteries

Here at Outbax, we are all about powering up your adventures. This is why you would not find better deals on portable power solutions like solar panels or inverter generators. Most of all, we have a range of deep cycle batteries that can efficiently complement your outdoor power needs. But first...

About deep-cycle batteries
Deep-cycle batteries are reusable chemical-energy storage devices, designed to provide steady power over an extended period, and to be fully discharged and recharged many times. Although close cousins of the regular car (SLI) battery, they have different characteristics: car batteries are designed to provide a brief burst of intense power and then return to charging. This distinction is important, since using a car battery in equipment designed for deep cycle batteries – or vice versa – can have rather expensive consequences.

There are several types of deep-cycle battery, with different chemistries and internal structures.

Flooded lead-acid batteries
These batteries, also known as wet cells, are based on the lead-acid chemistry discovered in 1859 by Gaston Planté, and are also the oldest form of rechargeable battery. They feature electrodes (lead plates) immersed in electrolyte (a pool of distilled water and sulfuric acid), in an unsealed case. Although cheap and simple, flooded lead-acid batteries are increasingly being phased out in favour of more modern types.

Sealed AGM batteries
Sealed AGM (Absorbent Glass Mat) batteries use the same chemistry as flooded lead-acid batteries, but rather than a pool of acidic water, the electrolyte is composed of glass fibre mats soaked in sulfuric acid. The case is completely sealed, apart from a pressure-release valve. This allows for a compact, maintenance-free battery – ideal for the military applications for which it was originally developed.

Sealed gel batteries
Sealed gel batteries are another type of lead-acid cell, with a semi-solid ‘gel’ electrolyte. Like AGM batteries they have a sealed case, can be used in any orientation without leaking, and don’t normally release hydrogen.

Other types of deep-cycle battery
In addition to those listed above, other deep-cycle batteries are available with different internal chemistries. The best-known of these is lithium-ion – the new lightweight, powerful batteries used in mobile phones and electric cars. Although deep-cycle lithium-ion batteries are available for industrial use, they are rather prone to catching fire, and their cost is generally not yet low enough to compete with lead-acid batteries.

Understanding battery ratings
Even the most durable battery will eventually need to be replaced – and since deep-cycle batteries are expensive, it is helpful to understand the different ways they can be rated and compared. Here are the four most common indicators:

Amp-hours
The first number most people look for is Amp-hours (Ah), which expresses the total amount of chemical energy the battery can store and release as electricity. Amp-hours can be simply understood as the length of time the battery will operate for before needing to be recharged.

Voltage
Another important measurement is voltage (V), which indicates the electromotive force – or ‘power’ – of the current supplied by the battery.

C-rating
Putting it simply, the C-rating defines the length of time over which a battery should be discharged, in order to deliver its rated capacity.

Although the C-rating refers to time in hours, it is an inverted unit – a rating of 2C means 30 minutes, and a rating of 0.2C means 5 hours. This is often simplified by using a division operator to re-invert the unit, so C/2 means 2 hours, and C/20 means 20 hours. Most deep-cycle lead-acid batteries are designed to discharge their rated capacity over 20 hours, which can be expressed as either 0.05C or C/20.

Cycle life
Batteries are also sometimes rated by cycle life – the number of times they can be discharged and recharged without losing more than 20% of their capacity. The most common benchmark is IEC 60896, which is based on a repeated 100% discharge/recharge deep cycle. Although deep-cycle batteries aren't normally used this way, it is a good indicator of their likely longevity.

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    NEW 2022 Design - VoltX 12V 100Ah Lithium LiFePO4 Battery - Slim with Built-in BMS
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    • Now with 3 years Australian warranty
    • Built-in LCD voltage indicator
    • Produces up to two times the usable power of a lead-acid battery
    • Can be fully charged in 2 hours
    • At just 12kg, it’s one-third of the weight of other batteries
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    NEW 2022 Design - VoltX 12V 300Ah Lithium Ion LiFePO4 Battery
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    • Now with 3 years Australian Warranty
    • Advanced BMS - Protects against over-charge, over-discharge and short-circuiting
    • Produces up to two times the power of a lead-acid battery
    • Low self-discharge rate, requires little maintenance
    • Faster recharge (between 2-4 hours)
    • Maintenance-free and no leak
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    NEW 2022 Design - VoltX 12V 200Ah Lithium Battery LiFePO4 Deep Cycle Solar Charger RV Camping
    NEW 2022 Design - VoltX 12V 200Ah Lithium Battery LiFePO4 Deep Cycle Solar Charger RV Camping
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    • Now with 3 years Australian warranty
    • Built-in Battery Management System protects against over-charging, over-discharge and short-circuiting
    • Battery cells: prismatic
    • More than 2000 Life Cycles at 100% DoD
    • Good for travelling in inclement weather conditions
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    NEW 2022 Design - VoltX 12V 100Ah Lithium Battery LiFePO4 Deep Cycle Solar Charger Caravan Camping
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    • NEW 2022 Design!
    • Now with 3 years Australian warranty
    • Built-in Battery Management System protects against over-charging, over-discharge and short-circuiting
    • High quality prismatic cells
    • Up to 2000 Life Cycles
    • Can last up to 7 years
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    NEW 2022 Design - VoltX 12V 200Ah Lithium Battery LiFePO4 Deep Cycle Solar Charger RV Camping
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Here at Outbax, we are all about powering up your adventures. This is why you would not find better deals on portable power solutions like solar panels or inverter generators. Most of all, we have a range of deep cycle batteries that can efficiently complement your outdoor power needs. But first...

About deep-cycle batteries
Deep-cycle batteries are reusable chemical-energy storage devices, designed to provide steady power over an extended period, and to be fully discharged and recharged many times. Although close cousins of the regular car (SLI) battery, they have different characteristics: car batteries are designed to provide a brief burst of intense power and then return to charging. This distinction is important, since using a car battery in equipment designed for deep cycle batteries – or vice versa – can have rather expensive consequences.

There are several types of deep-cycle battery, with different chemistries and internal structures.

Flooded lead-acid batteries
These batteries, also known as wet cells, are based on the lead-acid chemistry discovered in 1859 by Gaston Planté, and are also the oldest form of rechargeable battery. They feature electrodes (lead plates) immersed in electrolyte (a pool of distilled water and sulfuric acid), in an unsealed case. Although cheap and simple, flooded lead-acid batteries are increasingly being phased out in favour of more modern types.

Sealed AGM batteries
Sealed AGM (Absorbent Glass Mat) batteries use the same chemistry as flooded lead-acid batteries, but rather than a pool of acidic water, the electrolyte is composed of glass fibre mats soaked in sulfuric acid. The case is completely sealed, apart from a pressure-release valve. This allows for a compact, maintenance-free battery – ideal for the military applications for which it was originally developed.

Sealed gel batteries
Sealed gel batteries are another type of lead-acid cell, with a semi-solid ‘gel’ electrolyte. Like AGM batteries they have a sealed case, can be used in any orientation without leaking, and don’t normally release hydrogen.

Other types of deep-cycle battery
In addition to those listed above, other deep-cycle batteries are available with different internal chemistries. The best-known of these is lithium-ion – the new lightweight, powerful batteries used in mobile phones and electric cars. Although deep-cycle lithium-ion batteries are available for industrial use, they are rather prone to catching fire, and their cost is generally not yet low enough to compete with lead-acid batteries.

Understanding battery ratings
Even the most durable battery will eventually need to be replaced – and since deep-cycle batteries are expensive, it is helpful to understand the different ways they can be rated and compared. Here are the four most common indicators:

Amp-hours
The first number most people look for is Amp-hours (Ah), which expresses the total amount of chemical energy the battery can store and release as electricity. Amp-hours can be simply understood as the length of time the battery will operate for before needing to be recharged.

Voltage
Another important measurement is voltage (V), which indicates the electromotive force – or ‘power’ – of the current supplied by the battery.

C-rating
Putting it simply, the C-rating defines the length of time over which a battery should be discharged, in order to deliver its rated capacity.

Although the C-rating refers to time in hours, it is an inverted unit – a rating of 2C means 30 minutes, and a rating of 0.2C means 5 hours. This is often simplified by using a division operator to re-invert the unit, so C/2 means 2 hours, and C/20 means 20 hours. Most deep-cycle lead-acid batteries are designed to discharge their rated capacity over 20 hours, which can be expressed as either 0.05C or C/20.

Cycle life
Batteries are also sometimes rated by cycle life – the number of times they can be discharged and recharged without losing more than 20% of their capacity. The most common benchmark is IEC 60896, which is based on a repeated 100% discharge/recharge deep cycle. Although deep-cycle batteries aren't normally used this way, it is a good indicator of their likely longevity.

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    Bestway Steel Pro MAX™ Round Above Ground Swimming Pool Kit - 4.57m x 1.22m
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    Bestway Lay-Z-Spa PALM SPRINGS - As Seen on TV - Heated Hot Tub Spa Massage - 140 Airjets™ - 4 to 6 People
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    NEW 2022 Design - VoltX 12V 200Ah Lithium Battery LiFePO4 Deep Cycle Solar Charger RV Camping
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