AGM batteries

Typical service life ranges for AGM batteries

The service life of an AGM battery depends strongly on how it is used. The table below shows typical service life ranges per type of application.

Type of use	Typical application examples	Depth of discharge (DoD)	Temperature profile	Typical service life
Standby / float use	UPS, emergency power, safety systems	<20% DoD	Stable (20–25 °C)	6–8 years
Light cyclic use	Recreational vehicles, leisure boats, backup energy	20–40% DoD	Mostly stable	4–6 years
Moderate cyclic use	Solar storage, off-grid systems, mobile power	40–60% DoD	Variable	3–5 years
Intensive cyclic use	Mobility, daily operation, industrial applications	60–80% DoD	Variable / elevated	2–4 years
High load / peak power use	Marine winches, bow thrusters, start boosters	High peak currents	Variable	3–5 years*

* Calendar life may be shorter, but batteries are designed for high performance and peak discharge capability.

To maximise lifespan, periodic maintenance charging is recommended when the battery is not in active use.
By comparison, conventional flooded lead-acid batteries generally last between three and five years, making AGM batteries a higher-performing but also higher-value investment.

Applications of AGM batteries

AGM batteries are widely used wherever reliable, maintenance-free energy storage is required. Typical applications include:

• Vehicles and marine systems
• Motorhomes and recreational vehicles
• Solar and off-grid energy systems
• Emergency power supplies (UPS)
• Lifts and safety systems
• Medical equipment

Because no liquid can leak from the battery, AGM batteries are particularly suitable for transportable or relocatable energy storage. They are factory-filled and permanently sealed, allowing safe transport and repeated installation without performance loss.

Their ability to operate on their side also makes AGM batteries ideal for installations in tight spaces where upright mounting is not possible.

How to choose the right AGM battery

There are different types of AGM batteries, each designed for specific usage profiles. To select the right AGM battery, it is important to understand how the battery will be used. Key considerations include:

• Application type
  For recreational or occasional use (e.g. campers or leisure boats), an AGM semi-traction battery is often sufficient.
  For daily or intensive use, an AGM EV battery is the better choice due to its higher cycle resistance.
• Capacity
  Choose a battery with sufficient capacity to meet your energy demand. If future expansion is expected, factor this into your selection. For applications that require higher capacity and longer runtime, a 200Ah AGM battery is often a suitable solution. Learn more about typical use cases and specifications on our page about AGM 200Ah batteries.
• Depth-of-discharge resistance
  For intensive applications, the battery must withstand repeated deep discharges. AGM EV batteries are specifically designed for this and outperform standard AGM batteries in demanding cycles.
• Cost versus performance
  AGM EV batteries come at a higher price point. Consider whether the extended lifespan and performance benefits outweigh the initial investment.
• Environmental conditions
  Extreme temperatures, temperature fluctuations or high humidity may require a tailored solution. In such cases, professional advice is recommended.

Finding cyclic and standby AGM batteries

We offer a wide range of AGM batteries for different applications. Based on your requirements, such as voltage, capacity and available installation space, we help you identify the most suitable solution.

Cyclic AGM batteries -> often used for mobile applications
Standby AGM batteries -> often used as backup power for critical applications

If a standard battery does not fully meet your needs, we are happy to explore custom battery solutions or alternative configurations. We also supply compatible accessories, including chargers and inverters.

Lead Carbon AGM batteries

Within the AGM battery category, Lead Carbon batteries represent a specialised solution for applications with frequent cycling or partial state-of-charge operation. By adding carbon to the negative plate, these batteries offer improved charge acceptance and enhanced cycle performance compared to conventional AGM batteries.