Last updated: May 21st, 2026

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The Bosch S4 series of batteries is a high-quality line of lead-acid batteries known for their reliability and excellent starting power. They are designed for a wide range of vehicles, including passenger cars and light commercial vehicles. Bosch S4 batteries provide optimal performance even in extreme weather conditions and are characterized by a long service life. Thanks to advanced technologies such as the PowerFrame grid, these batteries offer enhanced resistance to corrosion and maintain stable electrical performance throughout their lifespan.

The Bosch S40 09 model is a 74 Ah battery with a maximum starting current of 680 A. These specifications make it an excellent choice for vehicles requiring high starting power, especially those with gasoline and diesel engines. With dimensions of 278 mm in length, 175 mm in width, and 190 mm in height, this battery fits the L3 standard, which is widely used in European passenger cars. Its standard B13 mounting system ensures easy installation in most car models.

It is important to note that this battery has a terminal layout type 1, meaning the positive (+) terminal is on the left side. This detail should be considered when purchasing to ensure compatibility with the vehicle’s wiring.

The Bosch S40 09 battery is comparable to other popular models on the market, such as Exide Excell EB741, Lucas Premium LP086, and Varta Blue Dynamic E12. All of these models have similar electrical specifications and share the same L3 standard size (278x175x190 mm), making them interchangeable in many vehicles.

Specifications

Battery specification
Brand	Bosch
Series	S4
Model	S40 09
Battery technology	standard
Capacity	74 Ah
CCA (Cold Cranking Amps)	680 A
Length	278 mm
Width	175 mm
Height	190 mm
Battery layout	1 – positive on the left side
Terminal types	1
Base hold-down	B13

Similar batteries

Battery model	Capacity	CCA	Dimensions	Base hold-down
Bosch S4 S40 09	74 Ah	680 A	278x175x190 mm	B13
Exide Excell EB741	74 Ah	680 A	278x175x190 mm	B13
Lucas Premium LP086	70 Ah	640 A	278x175x190 mm	B13
Varta Blue Dynamic E12	74 Ah	680 A	278x175x190 mm	B13

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Frequently Asked Questions about the Bosch S40 09 car battery

What are the main specifications of the Bosch S4 S40 09 car battery?

The Bosch S4 S40 09 battery features a capacity of 74Ah and a cold cranking amperage (CCA) of 680A, with dimensions of approximately 278mm x 175mm x 190mm. It is a 12V battery designed for reliable starting power and consistent performance in a wide range of vehicles.

Which vehicles are compatible with the Bosch S4 S40 09 battery?

The Bosch S4 S40 09 battery is suitable for a variety of car makes and models, including vehicles from manufacturers such as BMW, Mercedes-Benz, Ford, Volkswagen, and more. Always check your vehicle’s owner’s manual or consult a professional to ensure compatibility with your specific model.

What are the advantages of choosing the Bosch S4 S40 09 battery?

The Bosch S4 S40 09 battery offers strong starting power, long service life, high reliability, and maintenance-free operation. It is designed to provide consistent performance even in extreme weather conditions, making it ideal for everyday and demanding driving needs.

Is the Bosch S4 S40 09 battery maintenance-free?

Yes, the Bosch S4 S40 09 battery is a maintenance-free battery, meaning it does not require topping up with distilled water or regular electrolyte checks. Its sealed design ensures convenience and safety for users.

How long does the Bosch S4 S40 09 battery typically last?

With proper care and suitable usage, the Bosch S4 S40 09 battery can typically last between 4 and 6 years. However, battery lifespan depends on factors such as driving habits, climate, and proper vehicle maintenance.

What is the warranty period for the Bosch S4 S40 09 battery?

The Bosch S4 S40 09 battery usually comes with a 4-year warranty, providing peace of mind and assurance of quality and durability against manufacturing defects.

How do I know when my Bosch S4 S40 09 battery needs replacement?

Common signs that your Bosch S4 S40 09 battery may need replacement include slow engine cranking, dim headlights, warning lights on the dashboard, and difficulty starting the vehicle, particularly in cold weather conditions.

Can I install the Bosch S4 S40 09 battery myself?

While it is possible to install the Bosch S4 S40 09 battery yourself if you have the necessary tools and experience, it is recommended to have it fitted by a professional to ensure correct installation, optimal performance, and safety.