Fulmen
Fulmen FK620 · Start-Stop battery 12V 62Ah 680A
Reference: BOL-FULMEN-FK620 · EAN 3661024047395
The Fulmen FK620 is a Start-Stop battery (AGM) with 12 V, 62 Ah and 680 A cold cranking current, case size L2 (242 × 175 × 190 mm), with the positive terminal on the right.
Fulmen FK620 · Start-Stop battery 12V 62Ah 680A images
- Voltage
- 12V
- Capacity
- 62Ah
- Cold cranking amps (EN)
- 680A
- Technology
- AGM
- Dimensions (L × W × H)
- 242 × 175 × 190 mm
- Polarity
- Positive terminal on the right
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14 days to return your order
If it does not fit, you have 14 days from delivery to return it unused.
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Enter your number plate or chassis number (VIN): we check whether this battery is compatible with your vehicle.
The Fulmen FK620 at a glance
The Fulmen FK620 is designed for automatic engine stop and regenerative braking. The FK620 is designed for cars that switch the engine off at every stop and restart it dozens of times per trip.
At 62 Ah it is the usual size for compact diesels and mid-size petrol saloons. The FK620 belongs to the Fulmen FULMEN AGM range. See all Fulmen batteries
Part numbers and codes for the Fulmen FK620
This is how the Fulmen FK620 appears on the label and in parts catalogues:
| Commercial reference | FK620 |
|---|---|
| EAN | 3661024047395 |
| Case size (EN) | L2 |
| Not to be confused with | Fulmen FK600 (60 Ah, 680 A), Fulmen FK720 (72 Ah, 760 A), Fulmen FK820 (82 Ah, 800 A) |
Fulmen FK620 vs FK600 and FK700: differences
How the FK620 compares with Fulmen batteries of similar size and capacity:
| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulmen FK620 (this one) | 62 Ah | 680 A | 242 × 175 × 190 | right | 17.9 kg |
| Fulmen FK600 | 60 Ah | 680 A | 242 × 175 × 190 | right | 17.9 kg |
| Fulmen FK700 | 70 Ah | 760 A | 278 × 175 × 190 | right | 20.6 kg |
- Fulmen FK600: 2 Ah less, the same cranking power, the same L2 case.
- Fulmen FK700: 8 Ah more, 80 A more cranking power, a different case (278 × 175 × 190 mm).
Equivalents and alternatives to the Fulmen FK620
Other AGM batteries that fit the FK620's tray with the same polarity: an AGM can only be replaced by another AGM.
| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EK620 | AGM | 62 Ah | 680 A | 242 × 175 × 190 |
| Tudor TK620 | AGM | 62 Ah | 680 A | 242 × 175 × 190 |
| Deta DK620 | AGM | 62 Ah | 680 A | 242 × 175 × 190 |
| Varta A8 | AGM | 60 Ah | 680 A | 242 × 175 × 190 |
| Deta DK600 | AGM | 60 Ah | 680 A | 242 × 175 × 190 |
| Fulmen FK600 | AGM | 60 Ah | 680 A | 242 × 175 × 190 |
Its Bosch equivalent is the Bosch S5 A05, the same as for the Varta A8. Bosch is not part of our catalogue; we list it so you can compare.
What it means that the FK620 is AGM
Inside, the FK620 has glass fibre separators (AGM) that hold the electrolyte. The FK620 needs a charger with an AGM mode that does not exceed 14.7 V.
Check this before ordering the Fulmen FK620
- The FK620 is AGM: it replaces an AGM or an EFB of the same size. You can swap an EFB for an AGM, but not an AGM for an EFB.
- Check the EN amps on your battery: if it says 680 A or less, the FK620 covers your engine.
- With 62 Ah, the FK620 replaces an original battery of that capacity or slightly less.
- The FK620 has the positive terminal on the right: compare it with your current battery.
- Length, width and height of the FK620: 242 × 175 × 190 mm (European case size L2).
Frequently asked questions about the Fulmen FK620
FK620 or FK600: which one suits me?
Compared with the FK620, the Fulmen FK600 has 2 Ah less. With the same cranking power (680 A), the FK620 and the FK600 differ in capacity: the one with more Ah supports more load with the engine off. Both measure 242 × 175 × 190 mm, so they fit the same tray.
Can the Fulmen FK620 be used in a car with Start-Stop?
Yes. As an AGM battery, the FK620 handles automatic engine stop and brake energy recovery, and it can replace an EFB of the same size.
How much does the Fulmen FK620 weigh?
17.9 kg, with 62 Ah of capacity. For reference, the Fulmen FK600 (60 Ah) weighs 17.9 kg.
Which battery is equivalent to the Fulmen FK620?
Only other AGM batteries with its dimensions and polarity: Exide EK620, Tudor TK620 and Deta DK620. Neither an EFB nor a conventional battery replaces the FK620. Its Bosch equivalent is the Bosch S5 A05, the same as for the Varta A8. Bosch is not part of our catalogue; we list it so you can compare.
What case size is the Fulmen FK620?
Case size L2: 242 × 175 × 190 mm. The FK620 fits any standard L2 battery tray such as the Exide EK620.
Which side is the positive terminal on the Fulmen FK620?
On the FK620, the positive terminal is on the right with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.
Why does a Start-Stop battery cost more than a standard one?
Because it uses reinforced plates and separators to withstand thousands of starts and partial discharges. A conventional battery in a Start-Stop car can fail in under a year.
More batteries to compare with the FK620
- More start-Stop batteries (AGM and EFB)
- More Fulmen models
- Exide EK508 · 50 Ah, 800 A, 260×173×206 mm
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