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AGM backup batteries - Strong support for the starter battery

Das Bild zeigt eine Grafik einer Batterie mit der Aufschrift intAct BackUp-Power.

Modern vehicles are equipped with ever more extensive electrical systems. From state-of-the-art hi-fi systems and sound systems to a wide range of comfort and assistance functions, the energy requirements in cars are constantly increasing. At the same time, start-stop technology, which helps to reduce fuel consumption and emissions, is becoming increasingly popular. These developments place increased demands on the electrical system and make it necessary to use battery solutions that exceed the capacities of conventional starter batteries. In this context, AGM backup batteries play a crucial role in ensuring a reliable power supply in modern, well-equipped vehicles.

TABLE OF CONTENTS

AGM backup batteries

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product image AGM backup battery BU01.2
BU01.2
Voltage12V
Capacity1,2 Ah (c20)
Position of terminal4
Size (LxWxH)97x43x58mm
CCA18 A (EN)
product image AGM backup battery BU09
BU09
Voltage12V
Capacity9 Ah (c20)
Position of terminal1
Size (LxWxH)150x87x105mm
CCA120 A (EN)
product image AGM backup battery BU11
BU11
Voltage12V
Capacity11 Ah (c20)
Position of terminal1
Size (LxWxH)150x87x132mm
CCA150 A (EN)
product image AGM backup battery BU12
BU12
Voltage12V
Capacity12 Ah (c20)
Position of terminal1
Size (LxWxH)150x87x145mm
CCA200 A (EN)
product image AGM backup battery BU14
BU14
Voltage12V
Capacity14 Ah (c20)
Position of terminal3
Size (LxWxH)151x98x101mm
CCA80 A (EN)
product image AGM backup battery BU15
BU15
Voltage12V
Capacity15 Ah (c20)
Position of terminal1
Size (LxWxH)150x87x145mm
CCA200 A (EN)
product image AGM backup battery BU30
BU30
Voltage12V
Capacity30 Ah (c20)
Position of terminal0
Size (LxWxH)197x132x186mm
CCAkeiner
BatterieVoltageCapacityCCALengthWidthHeightPosition of terminalEndpolartDatasheet
BU01.2 12V1,2 Ah (c20)18 A (EN)9743584S-4.8PDF
BU09 12V9 Ah (c20)120 A (EN)150871051SchraubanschlussPDF
BU11 12V11 Ah (c20)150 A (EN)150871321SchraubanschlussPDF
BU12 12V12 Ah (c20)200 A (EN)150871451SchraubanschlussPDF
BU14 12V14 Ah (c20)80 A (EN)151981013SchraubanschlussPDF
BU15 12V15 Ah (c20)200 A (EN)1508714513PDF
BU30 12V30 Ah (c20)keiner19713218601PDF
Das Bild zeigt die runde, grüne Grafik des Abschnitt 2.

Why do I need an AGM auxiliary battery?

In vehicles with extensive additional equipment, AGM backup batteries, often also referred to as AGM auxiliary batteries, perform several important tasks. First and foremost, they serve as an additional energy source for power-intensive consumers such as high-quality hi-fi systems, sound systems, additional lighting or navigation systems. This ensures that these systems function optimally without putting too much strain on the vehicle's main battery. A decisive advantage of the AGM auxiliary battery is its ability to relieve the main starter battery. By taking over the power supply for the additional consumers mentioned, it prevents excessive discharge of the starter battery. This is particularly important to ensure a reliable engine start at all times. This is particularly important for vehicles with frequent short journeys or intensive use of additional electrical equipment.
Das Bild zeigt eine Grafik zweier Batterien, die weiße ist für das Starten des Motors zuständig, die blaue liefert Strom an die elektronischen Verbraucher.

Das Bild zeigt die runde, grüne Grafik des Abschnitt 3.

The most important advantages of an AGM auxiliary battery

An AGM backup battery acts as a buffer in the vehicle's electrical system and ensures that the energy requirements of the extensive equipment are covered without jeopardizing the vehicle's starting capability or the stability of the entire vehicle electrical system. AGM backup batteries offer various advantages in this function:

• Reliable power supply: They ensure a constant and stable power supply for all electrical components, preventing voltage drops.
• Increased service life of the starter battery: By reducing the load on the main battery, its service life can potentially be extended.
• Optimum performance of auxiliary equipment: Powerful systems such as hi-fi systems receive the stable current they need for maximum performance.
• Emergency power function: In the event of a failure or heavy discharge of the main battery, the AGM auxiliary battery can serve as an additional power source for critical systems.
• High cycle stability: AGM batteries are designed for frequent charging and discharging cycles, which is ideal for operating auxiliary equipment even when the engine is switched off.Das Bild zeigt ein Schaubild mit zwei Batterien. Es symbolisiert mittels eines Balkendiagramms, dass die AGM-Batterie doppelt so zyklenfest ist.

Das Bild zeigt die runde, grüne Grafik des Abschnitt 4.

AGM batteries and start-stop: a strong team for your journey

AGM batteries play a particularly important role in modern vehicles with start-stop systems. These systems automatically switch off the engine when the vehicle is stationary in order to save fuel. However, this leads to an increased load on the battery due to the frequent engine restarts and the need to continue to supply the electrical systems with power during the engine standstill phases.

AGM batteries are specially designed for these increased cyclic loads and provide the necessary power for reliable operation of the start-stop system. During the phases in which the engine is switched off by the start-stop system, AGM auxiliary batteries ensure a stable power supply for all electrical consumers such as lights, air conditioning and radio. Their ability to work efficiently even at a low state of charge is crucial for this application.

intAct Backup-Power Batterie
The intAct Back-Up Power battery is ideal as a backup battery.


For vehicles with start-stop systems, especially those with regenerative braking, an AGM backup battery is not only advantageous, but often a necessity to ensure the correct functioning of the system and sufficient battery life. The use of a conventional battery in such vehicles can lead to premature failure and problems with the start-stop system.

Das Bild zeigt die runde, grüne Grafik des Abschnitt 5.

AGM batteries - Reliable power for your modern vehicle

AGM backup batteries represent a significant advancement in lead-acid battery technology and offer a convincing solution for the increasing electrical requirements of modern vehicles. Their robust design and improved performance make them a reliable choice for a wide range of applications, especially for vehicles with extensive electrical equipment and start-stop systems. With their maintenance-free, leak-proof and longer service life, they offer clear advantages over conventional car batteries.

So if you are looking for a reliable and powerful battery solution for your modern vehicle, AGM batteries are definitely worth considering.

Would you like to find out more about our AGM backup batteries? Then take a look at our buying guide Backup battery in the car: What is it good for?