Last updated: June 3rd, 2026

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The Bosch S3 series is a reliable line of lead-acid batteries designed for drivers who prioritize dependability and affordability in standard vehicle applications. These batteries are especially suitable for older vehicles or those without advanced electrical systems such as start-stop technology or extensive onboard electronics. While the S3 series does not incorporate the latest innovations like AGM or EFB technology, it delivers solid cold cranking performance and consistent capacity. Known for Bosch’s engineering quality, the S3 range offers good value and is ideal for users who need a no-frills, maintenance-free battery for everyday driving conditions. The S3 batteries are also widely available and built to fit standard European vehicles, ensuring compatibility and ease of installation.

The Bosch S30 05 model is a representative example of the S3 series’ philosophy. This 12V lead-acid battery offers a capacity of 56 Ah and a cold cranking amperage of 480 A, which is suitable for smaller petrol engines or older diesel engines without high electrical demands. With dimensions of 242 mm in length, 175 mm in width, and 190 mm in height, this battery conforms to the L2 size group—a common European format. The L2 classification means it shares compatibility with a wide range of compact and mid-sized vehicles across brands such as Volkswagen, Ford, Opel, Peugeot, and others. Its layout includes terminal layout type 0 and standard European terminal type 1, with a B13 hold-down for stable mounting.

Though the S30 05 sits at the lower end of performance compared to some alternatives, it remains a dependable option for standard vehicle needs. When comparing this model with its direct competitors, such as the Bosch S40 05 (60 Ah, 540 A) or S50 05 (63 Ah, 610 A), it’s clear that while the S30 05 offers slightly less capacity and starting power, it is more affordable and still meets the basic requirements for many vehicles. Likewise, models like the Varta Black Dynamic C14 (also 56 Ah, 480 A) or the Halfords Essentials HB 027 (56 Ah, 480 A) match it almost identically in specs, reinforcing that the S30 05 targets drivers looking for a cost-effective and proven solution without unnecessary extras.

Where the Bosch S30 05 really makes sense is in applications where reliability matters more than maximum performance. For instance, if you’re driving an older model vehicle or using your car mainly for short trips and light-duty operation, this battery provides ample power without overspending on features you won’t use. Furthermore, because it is not an EFB or AGM battery, it is not designed for vehicles equipped with start-stop systems, so using it in modern vehicles with energy recovery systems or high accessory loads could lead to premature wear.

In summary, the Bosch S30 05 is a classic, reliable battery that does exactly what it promises—offers solid starting power, durable design, and compatibility with a wide range of European vehicles. While there are higher-performance options in Bosch’s own lineup or from brands like Exide or Varta, the S30 05 remains a smart choice for everyday drivers who want the Bosch quality at a more accessible price point.

Specifications

Battery specification
Brand	Bosch
Series	S3
Model	S30 05
Battery technology	standard
Capacity	56 Ah
CCA (Cold Cranking Amps)	480 A
Length	242 mm
Width	175 mm
Height	190 mm
Battery layout	0 – positive on the right side
Terminal types	1
Base hold-down	B13

Similar batteries

Battery model	Capacity	CCA	Dimensions	Base hold-down
Bosch S3 S30 05	56 Ah	480 A	242x175x190 mm	B13
Bosch S4 S40 05	60 Ah	540 A	242x175x190 mm	B13
Bosch S5 S50 05	63 Ah	610 A	242x175x190 mm	B13
Exide Classic EC550	55 Ah	460 A	242x175x190 mm	B13
Exide Excell EB620	62 Ah	540 A	242x175x190 mm	B13
Exide Premium EA640	64 Ah	640 A	242x175x190 mm	B13
Halfords Essentials HB 027	56 Ah	480 A	242x175x190 mm	B13
Halfords Standard HCB 027	62 Ah	550 A	242x175x190 mm	B13
Lucas Premium LP027	60 Ah	540 A	243x175x190 mm	B13
Lucas Supreme LS027	65 Ah	640 A	242x175x190 mm	B13
Varta Black Dynamic C14	56 Ah	480 A	242x175x190 mm	B13
Varta Blue Dynamic D24	60 Ah	540 A	242x175x190 mm	B13
Varta Silver Dynamic D15	63 Ah	610 A	242x175x190 mm	B13

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Frequently Asked Questions about the Bosch S30 05 car battery

What are the main specifications of the Bosch S3 S30 05 car battery?

The Bosch S3 S30 05 car battery features a capacity of 45Ah and a cold cranking amperage (CCA) of 330A. It has dimensions of 207mm (length) x 175mm (width) x 175mm (height) and uses a standard terminal layout with terminals located on the right side (when viewed from the front).

Which vehicles are compatible with the Bosch S3 S30 05 battery?

The Bosch S3 S30 05 battery is suitable for a wide range of small and medium-sized petrol vehicles, including models from brands such as Fiat, Ford, Peugeot, Renault, Toyota, and Vauxhall. Always check your vehicle’s manual or consult a specialist to confirm compatibility with your specific car model.

What are the advantages of choosing the Bosch S3 S30 05 battery?

The Bosch S3 S30 05 battery offers reliable starting power, long service life, and maintenance-free operation. It is designed with robust technology that ensures consistent performance even in cold temperatures, making it a dependable choice for everyday driving needs.

Is the Bosch S3 S30 05 battery maintenance-free?

Yes, the Bosch S3 S30 05 is a completely maintenance-free battery. It does not require topping up with distilled water during its lifespan, thanks to its sealed design and advanced calcium technology.

How long does the Bosch S3 S30 05 car battery typically last?

With proper care and regular vehicle use, the Bosch S3 S30 05 battery can last between 3 and 5 years. Lifespan may vary depending on driving habits, climate, and vehicle electrical demands.

Does the Bosch S3 S30 05 battery come with a warranty?

Yes, the Bosch S3 S30 05 battery usually comes with a 3-year manufacturer’s warranty, providing peace of mind against defects and manufacturing issues during normal use.

How should I properly install the Bosch S3 S30 05 battery?

To install the Bosch S3 S30 05 battery, ensure your vehicle is switched off and follow the correct polarity when connecting the terminals. If you are unsure about installation, it is recommended to have it installed by a qualified technician to avoid any damage or safety risks.

Where can I buy a genuine Bosch S3 S30 05 car battery?

You can purchase the genuine Bosch S3 S30 05 car battery from reputable automotive parts retailers, Bosch authorized dealers, or trusted online stores such as whatbattery.co.uk. Always ensure you are buying from a trusted source to guarantee authenticity and warranty coverage.