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Start-stop batteries: Your comprehensive guide to modern car batteries

Der Bildausschnitt zeigt den unteren Bereich zweier Autobatterien mit der Aufschrift AGM und EFB

The automatic start-stop system has become an integral part of modern vehicles. It automatically switches off the engine when you stop to save fuel and CO₂ emissions. This places high demands on the battery, as it has to supply all electrical consumers while the engine is off. Conventional car batteries are not designed for this load and would quickly fail. A special start-stop battery is therefore essential, as it must be extremely powerful and cycle-resistant.

TABLE OF CONTENTS

Start-Stop-Batteries

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product image Start-Stop battery AGM45SS-0-ASIA
AGM45SS-0-ASIA
Voltage12V
Capacity45 Ah (c20)
Position of terminal0
Size (LxWxH)237x127x225mm
CCA380 A (EN)
product image Start-Stop battery EFB45SS-0-ASIA
EFB45SS-0-ASIA
Voltage12V
Capacity45 Ah (c20)
Position of terminal0
Size (LxWxH)237x127x225mm
CCA400 A (EN)
product image Start-Stop battery AGM45SS-1-ASIA
AGM45SS-1-ASIA
Voltage12V
Capacity45 Ah (c20)
Position of terminal1
Size (LxWxH)237x127x225mm
CCA380 A (EN)
product image Start-Stop battery AGM50SS
AGM50SS
Voltage12V
Capacity50 Ah (c20)
Position of terminal1
Size (LxWxH)260x173x206mm
CCA800 A (EN)
product image Start-Stop battery EFB55SS
EFB55SS
Voltage12V
Capacity55 Ah (c20)
Position of terminal0
Size (LxWxH)207x175x190mm
CCA540 A (EN)
product image Start-Stop battery EFB60SS-1-ASIA
EFB60SS-1-ASIA
Voltage12V
Capacity60 Ah (c20)
Position of terminal1
Size (LxWxH)230x172x220mm
CCA520 A (EN)
product image Start-Stop battery EFB60SS
EFB60SS
Voltage12V
Capacity60 Ah (c20)
Position of terminal0
Size (LxWxH)242x175x190mm
CCA640 A (EN)
product image Start-Stop battery AGM60SS
AGM60SS
Voltage12V
Capacity60 Ah (c20)
Position of terminal0
Size (LxWxH)242x175x190mm
CCA680 A (EN)
product image Start-Stop battery EFB60SS-0-ASIA
EFB60SS-0-ASIA
Voltage12V
Capacity60 Ah (c20)
Position of terminal0
Size (LxWxH)230x172x220mm
CCA520 A (EN)
product image Start-Stop battery EFB65SS
EFB65SS
Voltage12V
Capacity65 Ah (c20)
Position of terminal0
Size (LxWxH)278x175x175mm
CCA650 A (EN)
product image Start-Stop battery EFB68SS-1-ASIA
EFB68SS-1-ASIA
Voltage12V
Capacity68 Ah (c20)
Position of terminal1
Size (LxWxH)270x173x222mm
CCA730 A (EN)
product image Start-Stop battery EFB68SS-0-ASIA
EFB68SS-0-ASIA
Voltage12V
Capacity68 Ah (c20)
Position of terminal0
Size (LxWxH)270x173x222mm
CCA730 A (EN)
product image Start-Stop battery AGM70SS
AGM70SS
Voltage12V
Capacity70 Ah (c20)
Position of terminal0
Size (LxWxH)278x175x190mm
CCA760 A (EN)
product image Start-Stop battery EFB70SS
EFB70SS
Voltage12V
Capacity70 Ah (c20)
Position of terminal0
Size (LxWxH)278x175x190mm
CCA760 A (EN)
product image Start-Stop battery EFB75SS
EFB75SS
Voltage12V
Capacity75 Ah (c20)
Position of terminal0
Size (LxWxH)315x175x175mm
CCA730 A (EN)
product image Start-Stop battery EFB80SS
EFB80SS
Voltage12V
Capacity80 Ah (c20)
Position of terminal0
Size (LxWxH)315x175x190mm
CCA800 A (EN)
product image Start-Stop battery AGM80SS
AGM80SS
Voltage12V
Capacity80 Ah (c20)
Position of terminal0
Size (LxWxH)315x175x190mm
CCA800 A (EN)
product image Start-Stop battery AGM95SS
AGM95SS
Voltage12V
Capacity95 Ah (c20)
Position of terminal0
Size (LxWxH)353x175x190mm
CCA850 A (EN)
product image Start-Stop battery EFB95SS-0-ASIA
EFB95SS-0-ASIA
Voltage12V
Capacity95 Ah (c20)
Position of terminal0
Size (LxWxH)304x173x220mm
CCA800 A (EN)
product image Start-Stop battery EFB95SS-1-ASIA
EFB95SS-1-ASIA
Voltage12V
Capacity95 Ah (c20)
Position of terminal1
Size (LxWxH)304x173x220mm
CCA800 A (EN)
product image Start-Stop battery EFB100SS
EFB100SS
Voltage12V
Capacity100 Ah (c20)
Position of terminal0
Size (LxWxH)353x175x190mm
CCA900 A (EN)
product image Start-Stop battery EFB105SS
EFB105SS
Voltage12V
Capacity105 Ah (c20)
Position of terminal0
Size (LxWxH)394x175x190mm
CCA950 A (EN)
product image Start-Stop battery AGM105SS
AGM105SS
Voltage12V
Capacity105 Ah (c20)
Position of terminal0
Size (LxWxH)394x175x190mm
CCA950 A (EN)
BatterieVoltageCapacityCCALengthWidthHeightPosition of terminalEndpolartDatasheet
AGM45SS-0-ASIA 12V45 Ah (c20)380 A (EN)23712722501PDF
EFB45SS-0-ASIA 12V45 Ah (c20)400 A (EN)23712722501PDF
AGM45SS-1-ASIA 12V45 Ah (c20)380 A (EN)23712722511PDF
AGM50SS 12V50 Ah (c20)800 A (EN)26017320611PDF
EFB55SS 12V55 Ah (c20)540 A (EN)20717519001PDF
EFB60SS-1-ASIA 12V60 Ah (c20)520 A (EN)23017222011PDF
EFB60SS 12V60 Ah (c20)640 A (EN)24217519001PDF
AGM60SS 12V60 Ah (c20)680 A (EN)24217519001PDF
EFB60SS-0-ASIA 12V60 Ah (c20)520 A (EN)23017222001PDF
EFB65SS 12V65 Ah (c20)650 A (EN)27817517501PDF
EFB68SS-1-ASIA 12V68 Ah (c20)730 A (EN)27017322211PDF
EFB68SS-0-ASIA 12V68 Ah (c20)730 A (EN)27017322201PDF
AGM70SS 12V70 Ah (c20)760 A (EN)27817519001PDF
EFB70SS 12V70 Ah (c20)760 A (EN)27817519001PDF
EFB75SS 12V75 Ah (c20)730 A (EN)31517517501PDF
EFB80SS 12V80 Ah (c20)800 A (EN)31517519001PDF
AGM80SS 12V80 Ah (c20)800 A (EN)31517519001PDF
AGM95SS 12V95 Ah (c20)850 A (EN)35317519001PDF
EFB95SS-0-ASIA 12V95 Ah (c20)800 A (EN)30417322001PDF
EFB95SS-1-ASIA 12V95 Ah (c20)800 A (EN)30417322011PDF
EFB100SS 12V100 Ah (c20)900 A (EN)35317519001PDF
EFB105SS 12V105 Ah (c20)950 A (EN)39417519001PDF
AGM105SS 12V105 Ah (c20)950 A (EN)39417519001PDF
Das Bild zeigt die runde, grüne Grafik des Abschnitt 2.

The tasks of your start-stop battery: more than just starting the engine

The start-stop battery has to do more:

  • Frequent starts: It can withstand 5 to 10 times more engine starts than standard car batteries, which requires a high cycle stability.
  • Consumer supply: As long as the engine is off, it continues to supply all electrical consumers, radio, air conditioning and lights.
  • Short trips/cold: Alternators often do not charge fully on short trips, which can lead to sulphation and loss of capacity. Regular external charging is important.

Das Bild zeigt eine Grafik einer Batterie, die verschiedene elektronische Verbraucher versorgt.

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

EFB batteries: The robust entry

What is an EFB battery? EFB stands for "Enhanced Flooded Battery", an improved wet battery. Its liquid electrolyte with special additives and polyester fleece improves cycle stability and charge absorption.

Advantages of EFB start-stop batteries:

Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Twice the cycle stability of conventional car batteries.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Faster charge absorption.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Better suited for operation in partial charge mode.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  More cost-effective compared to AGM batteries.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Faster charge absorption.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  More robust than conventional car batteries.

EFB batteries are the option for simple start-stop systems or cars without start-stop with many consumers or if you drive your car a lot in city traffic and on short journeys.
If an EFB car battery is installed in your car at the factory, you can also upgrade to an AGM car battery at any time.

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

AGM batteries: The premium solution

What is an AGM battery? AGM stands for "Absorbent Glass Mat". The electrolyte is bound in a glass fiber mat. Tightly compressed plates reduce material abrasion and thus extend the service life.

Advantages of AGM start-stop batteries:

Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Extremely cycle-resistant, last up to three times longer than conventional car batteries.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Excellent cold start performance, even under extreme temperature conditions (hot and cold).
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Absolutely maintenance-free and leak-proof.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  More vibration-resistant than conventional car batteries or EFB batteries.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Fast charge absorption and delivery of high currents, ideal for recuperation systems.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Provide reliable power even at a low state of charge.
Das Icon zeigt ein weißes Pluszeichen, eingeschlossen von einem grünen Kreis  Minimal self-discharge, ideal for seasonally used vehicles.

AGM batteries are the first choice for vehicles with advanced start-stop systems, recuperation and extensive electrical equipment. They are robust and deliver reliable starting performance even in extreme temperatures.

Please note: If an AGM battery is installed in your car at the factory, you must replace it with an AGM start-stop battery. It is not possible to downgrade to an EFB battery!

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

Start-stop batteries in cars without a start-stop function: a sensible option?

Das Bild zeigt zwei schwarze Batteriekästen mit der Aufschrift intAct Start-Stop-Power EFB & AGM

Even without an automatic start-stop system, a start-stop battery (EFB or AGM) can be useful, especially if you have a lot of electrical consumers or only drive short distances for the most part.

However, before you install a start-stop battery in your "normal" car, you should check whether your alternator supplies enough energy to cover the additional power requirement. Because if your alternator supplies too little energy, your battery will never be fully charged, which can lead to a deep discharge and therefore battery failure in the long term.

You should always check the voltage of your car battery regularly and recharge it with a battery charger if necessary. To save you the hassle of opening the hood and measuring with a voltmeter, we recommend our intAct Battery-Guard. This allows you to easily monitor the charge status of your battery via smartphone.

No more starting problems!
No more flat car and motorcycle batteries.

The graphic shows the intAct Battery Guard on a green background. The Battery Guard can be used to monitor batteries.

Discover intAct Battery-Guard!

Das Bild zeigt die runde, grüne Grafik des Abschnitt 6.

Conclusion: Safe on the road with the right start-stop battery

EFB and AGM batteries are the only right choice for vehicles with automatic start-stop systems. Compared to conventional car batteries, these special battery types are significantly more cycle-resistant and can easily cope with the increased load caused by frequent switching on and off of the engine. They also guarantee that all electrical consumers are reliably supplied with energy even when the engine is switched off and are characterized by faster charging behavior.

ATTENTION: A factory-fitted EFB battery can easily be replaced by a more powerful AGM battery. However, if an AGM battery has been installed at the factory, it must be replaced with an AGM battery. Conversion to an EFB battery is not permitted here.

EFB and AGM batteries can even be a sensible investment for vehicles without an automatic start-stop system. Especially with a large number of electrical consumers or predominantly short-distance driving, these batteries can withstand the increased load much better and offer a longer service life. To ensure maximum service life, it is advisable to recharge these batteries regularly with a suitable battery charger.

 

Our tip:
If you're not sure which battery is right for your car, read our detailed guide. Here you will find specific recommendations - tailored to your driving behavior and technical requirements.

 What kind of battery do I need for Start-Stop?