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Home Products Bosch S4E42 - Car Battery - 85A/H - 800A - Efb Technology - Adapted for Vehicles with Start/Stop System
New Bosch S4E42 - Car Battery - 85A/H - 800A - Efb Technology - Adapted for Vehicles with Start/Stop System
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The Bosch S4E42 car battery is ideally suited for modern vehicles equipped with Start/Stop technology, providing reliable performance even in extreme temperatures. With an impressive capacity of 85A/h and a peak current of 800A, it ensures excellent starting power and responsiveness. Its EFB technology offers longer service life and enhanced deep-cycle resistance, making it a superior choice for drivers seeking durability and efficiency. The maintenance-free design, along with double backfire protection, enhances safety, catering to those who prioritise reliability and longevity in their battery choice.

Key Features
Capacity
85A/h
Cold Cranking Amps
800A
Voltage
12V
Dimensions
303.9 x 173 x 218.5 mm
Polarity
left - right +
Technology
EFB
Maintenance
Maintenance-free
Safety Features
Double backfire protection
Compatibility
Adapted for Start/Stop systems
Use & Care

This battery is designed for vehicles with Start/Stop systems, so compatibility should be confirmed using vehicle identification. It is essential to remove the transport plug from the degassing holes before use to avoid pressure build-up. Care should be taken to ensure the battery is correctly installed, with dimensions of 303.9 x 173 x 218.5 mm ensuring it fits most standard battery compartments.

Bosch S4E42 Car Battery 85Ah 800A EFB for Start/Stop Vehicles

£152.33
Price updated on: 09/04/2026 at 18:36
Price History
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Key Takeaway

This high-performance car battery from Bosch delivers a powerful 800A starting capacity and an impressive 85A/H reserve, making it ideal for vehicles equipped with start/stop systems. Priced at £128.95, it features advanced EFB technology for enhanced durability and reliability, ensuring your vehicle starts smoothly every time. Perfect for drivers who want a dependable battery that can handle modern demands and improve fuel efficiency.

Frequently Asked Questions

What is Bosch S4E42?

The Bosch S4E42 is a high-performance car battery designed for modern vehicles. It features EFB technology, making it ideal for cars equipped with Start/Stop systems.

How much does Bosch S4E42 cost?

The Bosch S4E42 is priced at £128.95. This battery offers excellent value due to its durability and advanced technology, ensuring reliable performance.

What are the key features of Bosch S4E42?

Key features of the Bosch S4E42 include an 85A/H capacity, a powerful 800A cold cranking amp, and EFB technology for enhanced cycling stability. It is specifically designed for vehicles with Start/Stop systems.

Who is Bosch S4E42 best for?

The Bosch S4E42 is best suited for drivers of modern vehicles that utilize Start/Stop technology. It's ideal for those seeking a reliable battery that can handle frequent engine restarts.

How do I use/care for Bosch S4E42?

To care for the Bosch S4E42, ensure it is securely installed and regularly check the terminals for corrosion. It’s also important to keep the battery charged, especially if the vehicle is not used frequently.

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