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Bosch S5 A11 Car Battery Review: Dependable power for Start/Stop vehicles

Bosch S5 A11 Car Battery 80 A/h - 800 A - 12 V, Type 115, AGM Lead-acid for Vehicles with a Start/Stop System, Left (-) Right (+), 315 x 175 x 190 mm - For Vehicles with Regenerative Braking
4.8
[AGM Technology]  Absorbent Glass Mat design prevents acid stratification and maintains reliable charge over time.
[High Capacity & Cranking]  80 Ah capacity with 800 A cold cranking for strong starts in all conditions.
[Start/Stop Compatible]  Designed for vehicles with Start/Stop and energy recuperation systems; check VIN for fit.
[Reliable in Tough Conditions]  Absorbed acid ensures steady high energy during short trips, stop-and-go traffic, and cold weather.
[Easy Handling & Recyclable]  Robust handles for safe transport and installation; battery highly recyclable for eco-friendly disposal.
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Automotive battery built for modern cars with Start/Stop systems, promising steady starts and long-term durability. Confident drivers who rely on short trips and frequent stops will appreciate consistent performance and easy handling. Is the Bosch S5 A11 Car Battery the right fit for cars with regenerative braking and frequent urban use?

⚡ At a Glance
  • Starting Performance: High cold-start current and steady energy delivery during stop-start driving
  • Best for: Cars with Start/Stop systems and regenerative braking that need reliable restarts
  • Not ideal for: Vehicles without Start/Stop systems where AGM benefits are unnecessary

AGM technology combines 12 V lead-acid construction with 80 A/h capacity and an 800 A cold-cranking rating. Polarity is left negative and right positive, Type 115, with dimensions 315 x 175 x 190 mm.


Confident cold starts - thanks to high cold-cranking current

AGM lead-acid chemistry delivers an 800 A cold-cranking rating alongside an 80 A/h capacity at 12 V, ensuring high available current when starting in low temperatures. Absorbent glass mat construction traps acid in microfibre-glass mats to maintain consistent output.

Reliable ignition even during cold weather and frequent short trips, reducing failed starts and roadside inconvenience.

Longer service life under frequent use - with AGM construction that prevents acid stratification

Absorbent glass mat design prevents acid layering inside the cell, supporting higher numbers of charge and discharge cycles. The technology preserves charge during stop-start phases and helps maintain performance over time.

Better retention of capacity on urban runs and stop-and-go traffic, meaning fewer premature replacements and steadier on-road performance.

Safer handling and greener disposal - thanks to built-in handles and high recyclability

Robust carrying handles allow safer transportation and positioning during fitting, while materials are designed for efficient recycling at end of life. The manufacturer encourages proper disposal to recover materials for new batteries.

Easier for technicians to lift and fit, and straightforward recycling routes reduce environmental impact when the battery is retired.

✨ The 4 Key Reasons for Bosch S5 A11 Car Battery
  1. AGM technology - Improves charge retention and performance during stop-start cycles
  2. High cold-cranking current - Ensures dependable engine starts in cold weather and short trips
  3. Robust carrying handles - Makes safe transport and professional fitting simpler
  4. Designed for recuperation systems - Compatible with cars using regenerative braking and Start/Stop systems
📋 Technical Details at a Glance
  • Category: Automotive battery
  • Chemistry: Lead-acid with Absorbent Glass Mat (AGM)
  • Voltage: 12 V
  • Capacity: 80 A/h
  • Cold Cranking Amps: 800 A
❓ Frequently Asked Questions

Q: How can I check if the battery fits my car?

A: Use the vehicle identification number in the search function at the top of the product page to confirm compatibility, specifically for cars with Start/Stop systems and recuperation.

Q: Can this battery be fitted without special programming?

A: Battery is reported as easy to fit and in many cases requires no car programming, but follow installation instructions and seek professional help when needed.

Q: Is the battery suitable for cars with regenerative braking?

A: Yes, designed for vehicles with Start/Stop systems and recuperation, making it suitable for cars that recover energy through regenerative braking.

🏆 Our Verdict

Drivers who need reliable starts in urban and stop-start conditions will find this battery well suited to their needs. AGM construction combined with an 80 A/h capacity and 800 A cold-cranking current makes it particularly effective for Start/Stop and regenerative braking systems. Consider installation requirements and long-term recyclability when weighing overall value, as durability and cycle life support lasting performance.