The Three Main Types
| Type | Full Name | Best For | Price Range |
|---|---|---|---|
| Standard (SLI) | Starting, Lighting, Ignition | Cars without start-stop | £50–80 |
| EFB | Enhanced Flooded Battery | Standard start-stop systems | £70–110 |
| AGM | Absorbent Glass Mat | Premium start-stop, mild hybrid | £100–180 |
Recommended Batteries for Car Types Explained
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Why Battery Type Matters
Start-stop systems put enormous strain on batteries — far more than traditional starting. Every time the engine stops at a traffic light and restarts, the battery cycles through a deep discharge/recharge. Standard batteries can’t handle this and will fail within months in a start-stop vehicle.
Can I Upgrade?
You can always upgrade to a higher-spec battery: standard → EFB → AGM. But you should never downgrade. An AGM battery in a standard car will work fine and last longer. A standard battery in an AGM car will fail quickly.
Frequently Asked Questions
What’s the difference between EFB and AGM?
EFB is an enhanced version of a standard flooded battery with better cycling ability. AGM uses glass mat separators that absorb the electrolyte, allowing deeper discharge cycles and faster recharging. AGM handles 3-4x more charge cycles than standard batteries.
How do I know if my car has start-stop?
If your engine automatically turns off when you stop at traffic lights and restarts when you lift the clutch or brake, you have start-stop. Check your dashboard for a start-stop indicator light.
Can I fit an AGM battery to any car?
Yes — AGM batteries work in any car. They’re overkill for non-start-stop vehicles but provide superior performance and longevity.
Recommended Products
How we check fitment for this guide
We cross-reference fitment figures against manufacturer specifications and OE-supplier catalogue data where available, and matched to the standard codes that actually govern fit — battery type/group sizes, wiper lengths and fitting types, bulb fitment codes, tyre size markings, and oil specifications. We work by make, model, year, engine, and build date, because a single model can take different parts across its life. Where the right part depends on your exact vehicle, we tell you to confirm by registration or VIN. More on our method →