Modern vehicles equipped with start-stop systems place exceptional demands on conventional lead-acid batteries, cycling through repeated charge and discharge sequences that standard units cannot sustain. The Bosch S5A AGM 12V 70Ah battery is engineered specifically to meet these demands, delivering reliable cranking power and deep-cycle resilience for passenger cars with advanced energy management systems.
Manufactured by Bosch, the S5A range utilises Absorbent Glass Mat (AGM) technology, in which the electrolyte is suspended within a glass fibre separator rather than held in free liquid form. This construction eliminates acid stratification, reduces internal resistance, and supports the high charge acceptance rates required by regenerative braking systems. With a Cold Cranking Amps (EN) rating of 760A and a 70Ah capacity at the C20 rate, this unit delivers consistent starting performance across a wide range of operating temperatures.
This battery measures 278mm × 175mm – 190mm (L × W × H) and weighs 20.09kg. It is supplied with a Type 1 terminal configuration, Hold-Down Type B13, and Polarity 0 (positive terminal left). This product supports start-stop technology – verify compatibility with the product label prior to fitment. No direct cross-reference part numbers are provided; confirm vehicle fitment using the registration look-up tool.
This battery is available in additional capacities and formats within the Bosch S5A AGM range, including S5A08, S5A11, S5A13, and S5A15, as well as extended LA-series variants." This battery is supplied with a 2-year warranty. "Standard delivery: 1–3 working days within UK mainland. 30-day returns.
Key Feature:
- Backed by a 2-Years Warranty-year warranty for dependable service life and reliable performance under everyday driving conditions.
- Engineered to deliver consistent starting power and steady performance in demanding automotive applications.
- Ensuring consistent current flow, strong cranking power, and stable voltage delivery.
- Weighs 20.09 kg, balancing high capacity with manageable handling for easy fitting and routine maintenance.
- OEM-style design ensures perfect terminal alignment, secure fitment, and support for both standard and start-stop vehicle systems.
Compatibility:
optimised for motorcycles and two-wheelers, ensuring consistent ignition power, rapid recharge capability, and stable energy supply for compact high-performance engines and accessory systems.
Uses:
- Restores dependable starting for vehicles that require consistent, everyday performance in regular driving conditions.
- Suited to No battery applications, delivering steady operation for vehicles with start-stop or accessory-heavy systems.
- Supports stable electrical output for ignition, lighting, infotainment, and critical onboard electronics in all environments.
- Performs reliably across short commutes and longer journeys where consistent restarts and electrical stability are essential.
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