The Bosch S4 series is known for its high quality, reliability, and durability. These batteries are designed to meet the demands of modern vehicles, providing stable power supply and high starting performance. Thanks to advanced lead-acid technology, Bosch S4 batteries offer long service life and resistance to extreme operating conditions. They are an ideal solution for a wide range of passenger cars and light commercial vehicles.
The Bosch S40 21 model is a compact battery with a capacity of 45 Ah and a maximum starting current of 330 A. With its dimensions of 238x129x227 mm, it corresponds to the B24 standard, which is less common in European cars but widely used in Asian vehicles. Proper size compatibility with the engine bay and mounting system is crucial for the correct operation of the vehicle.
One of the distinctive features of the Bosch S40 21 is its 0 terminal layout, meaning the positive terminal is on the right side. The standard type 1 terminals ensure compatibility with many vehicle models. It is also worth noting that this battery uses the less common B0 mounting system, meaning it lacks the standard bottom hold-down. This may require alternative mounting methods, such as additional clamps.
For those looking for batteries with similar specifications, alternatives include the Exide Excell EB454 (45 Ah, 330 A), Lucas Premium LP053 (45 Ah, 390 A), and Varta Blue Dynamic B32 (45 Ah, 330 A). All these models have comparable dimensions and technical parameters, making them suitable replacements for the Bosch S40 21.