# Start-Stop battery Fulmen FL604 12V 60Ah 520A EFB

![Start-Stop battery Fulmen FL604 12V 60Ah 520A EFB](https://baterias.com/3764-home_default/battery-fulmen-fl604-12v-60ah-520a.jpg)

> Fulmen FL604 Start-Stop battery 12V 60Ah 520A EFB. Dimensions 230×173×222 mm, + terminal on the right. For Start-Stop vehicles.

**Category:** [Car batteries equipped with start stop system](https://baterias.com/gb/car-batteries-equipped-with-start-stop-system) → [Fulmen](https://baterias.com/gb/fulmen)

- **Canonical URL**: https://baterias.com/gb/battery-fulmen-fl604-12v-60ah-520a
- **Language**: en-GB
- **Brand**: Fulmen
- **Reference**: BCOM-FULMEN-FL604
- **EAN**: 3661024046305
- **MPN**: FL604
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | FULMEN |
| Reference | FL604 |
| Model | FULMEN EFB |
| Voltage (V) | 12 V |
| Largo | 230 mm |
| Ancho | 173 mm |
| Alto | 222 mm |
| Peso | 15.8 kg |
| Tecnología | EFB |
| EAN | 3661024046305 |
| Terminal layout | Positive terminal on the right |
| Hold down | B00 |
| Cold cranking amps (EN) | 520 A |
| Capacity (C20) | 60 Ah (c20) |
| Case type | D23 |

## Quick description

**Fulmen FL604 12V 60Ah 520A** is a battery designed specifically for Start-Stop vehicles. Withstands up to 3× more start cycles than a conventional battery and maintains performance with BMS and regenerative braking systems.

## Why this Start-Stop battery?

- **Designed for Start-Stop** built for the intensive cycling of modern cars
- **2 to 3 times longer life** vs fitting a cheap conventional battery
- **Fast recovery** recharges in minutes once the engine is running

🔌 Voltage
12 V

⚡ Capacity
60 Ah C20

🔋 Cold cranking
520 A EN-1

📏 Dimensions
230×173×222 mm

⚙️ Technology
EFB

🧭 Polarity
Positive on the right

⚖️ Weight
15,8 kg

🏷️ Model
FULMEN EFB

## Description

## Start-Stop battery Fulmen FL604 60Ah 520A 12V

12*V* Voltage
60*Ah* Capacity
520*A* Cold cranking
15.80*kg* Weight

Designed for cars with Start-Stop, regenerative braking and heavy electrical loads, the **Fulmen FL604** combines **60 Ah** and **520 A** of cold cranking current (EN) with EFB construction able to withstand hundreds of starts a day. It replaces the original battery without adaptation in Start-Stop cars with a 230 × 173 × 222 mm format: same 60 Ah capacity and the positive terminal on the right.
- EFB technology: reinforced electrolyte for many more start cycles.
- Withstands hundreds of starts a day without degrading.
- Compatible with regenerative braking and energy management (BMS).
- Up to three times the cycles of a conventional battery.

### What the Fulmen FL604 is for

In Start-Stop cars the battery works far harder than in a conventional car; the Fulmen FL604 is built for that intensive cycling and to recharge quickly on the move. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 15.80 kg and B00 hold-down.

### Dimensions, polarity and mounting

The Fulmen FL604 is made in the 230 × 173 × 222 mm format and weighs 15.80 kg. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a B00 hold-down, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.

### Why choose Fulmen batteries

Fulmen is the historic French brand of the Exide group: batteries made on the same lines and with the same technology as original equipment, widely used by workshops across Europe. All the Fulmen batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

### Technology inside the Fulmen FL604

Within the Fulmen catalogue, the FL604 is the 60 Ah model designed for this application.
An EFB is a reinforced flooded battery: its plates retain the active material better and tolerate the cycling imposed by a simple Start-Stop system, at a lower cost than an AGM.

### Usage and maintenance tips

A charger with an EFB or smart conventional mode is enough; avoid the high-voltage modes intended for AGM. In a Start-Stop car the battery is controlled by the ECU; after replacing it, the new battery may need to be registered so the system adjusts charging.

### Official warranty

The Fulmen FL604 comes with the **manufacturer's official warranty**. To keep it valid, always fit the same technology as the original battery (AGM or EFB) and register the replacement if your vehicle requires it.

### When you get it and how to return it

Orders placed **before [[ks:cutoff]]** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have **[[ks:return_days]] days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.

## Frequently asked questions

### Is the Fulmen FL604 an EFB battery? When is EFB used?

Yes. The FL604 is an EFB (Enhanced Flooded Battery): flooded lead-acid reinforced with plate additives. Withstands more cycles than a conventional but fewer than an AGM. Fitted to cars with basic Start-Stop (no regenerative braking). More affordable than an equivalent AGM, lifespan 4-6 years.

### Is the FL604 model suitable for Start-Stop cars?

Yes. As EFB technology it is designed for Start-Stop vehicles. EFB batteries cover basic Start-Stop (no regenerative braking). EFB is recommended for basic Start-Stop; AGM is recommended when regenerative braking is also present, thanks to its higher cycle capability. It works straight out of the box — on most modern vehicles registering the battery via OBD is recommended so the alternator automatically applies the optimal charging profile.

### How do I change this battery step by step?

In most cars it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

### How long does the Fulmen FL604 battery last?

Expected lifespan of the Fulmen FL604 is 4 to 6 years in basic Start-Stop car use. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.

### What are the dimensions of the Fulmen FL604 battery?

Dimensions (length × width × height) are 230×173×222 mm — also written as 230x173x222 mm — following the European DIN standard. Always measure the space in your car before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.

### Will the Fulmen FL604 battery fit my car?

Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The FL604 typically fits a wide range of European vehicles thanks to its standard DIN case format.

### Which batteries are equivalent to the Fulmen FL604?

Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop cars. See the "Equivalents" section to view recommended options at the same performance level.

### What exactly is an EFB battery like the Fulmen FL604?

An EFB (Enhanced Flooded Battery) is a flooded lead-acid battery reinforced with plate additives (carbon and polyethylene) and thicker grids. It withstands twice the cycles of a conventional battery and handles deep discharges better, but less than an AGM. It is the original fitment on cars with basic Start-Stop (no regenerative braking): Renault Energy TCe, Peugeot/Citroën PureTech, Fiat MultiAir, Hyundai/Kia ISG, Ford EcoBoost. If your car came with EFB from the factory, this is the correct battery — upgrading to AGM is optional (marginal improvement). If it came with AGM, EFB may fall short: better fit AGM. The Fulmen FL604 is original and meets EN 50342-6.

### Will my car recognise the new battery automatically?

On most cars it is not strictly necessary — the alternator detects the new battery and adapts the charge automatically. It is recommended to register the battery via OBD so that the alternator applies the optimal charging profile from the first minute and extends the battery life as much as possible (especially on brands with sophisticated BMS: BMW, Mercedes, Audi, Volvo, Land Rover). Any workshop with an OBD scanner (~10-15 € labour) does it in 5 minutes. DIY apps: VCDS / Carista (VAG), Bimmercode (BMW), iCarsoft. If you do not register, the car will still start correctly — the alternator just takes a few days to adjust the profile. The Fulmen FL604 ships factory-charged at 80-90% so you can use it straight after fitting.


## Equivalent batteries

- [VARTA N65](https://baterias.com/gb/battery-varta-n65-12v-65ah-650a)
- [TUDOR TL604](https://baterias.com/gb/battery-tudor-tl604-60ah-520a)
- [EXIDE EL604](https://baterias.com/gb/battery-exide-el604-12v-60ah-520a)

## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-10-07*