Bosch S5A05 Car Battery 027 AGM 12V 60Ah 680A CCA | S5 AGM Start-Stop

The Bosch S5A05 (UK type 027 AGM) is a premium 12V 60Ah battery delivering 680A cold cranking power, built for start-stop vehicles and cars with regenerative braking. Bosch AGM batteries are factory-fitted to vehicles as demanding as the Porsche Cayenne and Bentley Continental GT — this is the same OE-grade technology as a like-for-like replacement. Not sure the 027 AGM size is right for your car? See the fitment section below before ordering.

Key features & benefits

• Built for start-stop: AGM (Absorbent Glass Mat) technology handles frequent restarts and recuperation without wearing out.
• Up to 4× the deep-cycle resistance of a conventional starter battery — consistent power even in stop-and-go traffic and on short trips.
• 680A CCA: reliable starting in extreme temperatures with multiple electrical consumers running.
• Patented PowerFrame® grid for optimised current flow, better charge acceptance and less corrosion.
• 100% leak-proof and vibration-resistant — completely maintenance-free.

⚠ Fitment — please confirm before buying

This is a type 027 AGM battery — a standardised UK size: 12V, 242mm (L) × 175mm (W) × 190mm (H), layout 0 (positive terminal on the right when the terminals face you), DIN posts. It suits vehicles whose manufacturer specifies a 027 / L2 AGM battery. The technology rule: if your car left the factory with an AGM battery, replace with AGM — never a standard or EFB battery of the same size.

Two ways to confirm it fits:

1. Check by registration (VRM): enter your reg in a battery-finder lookup to confirm your car takes a 027 AGM, or send us your reg.
2. Match your existing battery: compare the type code, dimensions and terminal positions printed on your current battery with the specs above.

Specifications

Part numbers & cross-references

Bosch S5A05 · UK code 027 AGM. Direct equivalent to: Varta D52 / A8 (560 901 068), Yuasa YBX9027, Exide EK600, Banner 56001, Lucas LF027, Numax 027AGM. If your old battery carries any of these codes, this Bosch S5A05 is the matching size and technology.

What's in the box

1 × Bosch S5A05 (027 AGM) car battery, filled and charged.

Why buy from Motor Synergy

• Free delivery — with you in 2 days.
• 30 days free returns, hassle-free.
• Real support: unsure about fitment? Contact us before you order and we'll check.

FAQs

How do I know a 027 AGM fits my car? Check the type code and dimensions on your current battery, or confirm by your registration — send us your reg and we'll check.

My car has start-stop — is this suitable? Yes — the S5A05 is specifically designed for start-stop systems and regenerative braking.

Can I fit this if my car has a standard (non-AGM) battery? You can upgrade to AGM, but never downgrade — if your car came with AGM, replace with AGM.

Does the car need coding after fitting? Some vehicles require the new battery to be registered to the battery management system (BEM code) — Bosch AGM batteries carry a QR code linking to the relevant details. Check your handbook or ask your garage.

What if it doesn't fit? 30-day free returns — but confirming fitment first is easier than returning a heavy battery.