The Bosch S3 battery series is a practical solution designed for drivers who prioritize reliability and affordability in standard automotive applications. Intended for vehicles without high energy demands or start-stop systems, the S3 line offers solid performance for basic daily driving. These batteries are maintenance-free, use reliable lead-acid technology, and are backed by Bosch’s reputation for engineering excellence. While they don’t include advanced features like EFB or AGM technology, the S3 series is perfect for older or smaller vehicles that require dependable starting power without the need for advanced cycling durability or high-capacity energy storage.
The Bosch S30 00 is one of the smallest models in the S3 family, offering 40 Ah of capacity and 340 A of cold cranking power. It is designed for small petrol vehicles, city cars, or compact hatchbacks where space under the hood is limited and electrical demands are modest. Despite its compact size, the S30 00 provides reliable engine starts and consistent voltage output, making it a strong candidate for older or more economical vehicles with few electronic systems. Its dimensions—175 mm in length, 175 mm in width, and 190 mm in height—place it in the L0 size category, which is a standard European battery format used in many small cars.
This battery uses a standard terminal layout 0 and terminal type 1, making it compatible with most European vehicles in its class. The B13 base hold-down ensures stable mounting in vehicles that use the full ledge retention system commonly found in European car designs. This mounting format provides better support and vibration resistance than simpler systems like B0 or B1, especially on rough roads.
Compared with other batteries in the same size range, the S30 00 performs reliably. It matches the Varta Black Dynamic A16 and Lucas Premium LP202 in both capacity and cranking power (40 Ah, 340 A). However, for those who need just a bit more performance, options like the Bosch S40 00 or Varta Blue Dynamic B36 offer increased capacity (44 Ah) and stronger cranking power (420 A), albeit usually at a slightly higher price point. Meanwhile, the Exide Excell EB440 (44 Ah, 400 A) provides a solid middle ground for drivers wanting better performance while staying within the same form factor.
It’s important to remember that the S30 00, like all batteries in the S3 line, is not designed for use in vehicles equipped with start-stop systems. For those applications, only EFB or AGM batteries should be considered, due to their superior charge acceptance and deep cycling ability. However, for drivers with standard vehicles and everyday usage patterns, the S30 00 offers a well-balanced blend of affordability, Bosch quality, and dependable performance.
In summary, the Bosch S30 00 is a compact and efficient battery built for vehicles with modest electrical needs. It fits the L0 size group, uses a standard European configuration, and is securely mounted using the B13 system. With 40 Ah capacity and 340 A of cranking power, it’s a smart, economical choice for small cars and light-duty vehicles where reliability and fitment are top priorities.