Fulmen
Fulmen FK820 · Start-Stop battery 12V 82Ah 800A
Reference: BOL-FULMEN-FK820 · EAN 3661024047418
The Fulmen FK820 is a Start-Stop battery (AGM) with 12 V, 82 Ah and 800 A cold cranking current, case size L4 (315 × 175 × 190 mm), with the positive terminal on the right.
Fulmen FK820 · Start-Stop battery 12V 82Ah 800A images
- Voltage
- 12V
- Capacity
- 82Ah
- Cold cranking amps (EN)
- 800A
- Technology
- AGM
- Dimensions (L × W × H)
- 315 × 175 × 190 mm
- Polarity
- Positive terminal on the right
Solve it now by chat
Our assistant replies instantly about batteries, shipping and orders, and opens the request you need.
I prefer to fill in the form
Free quote, no strings attached
Ask for a price for your Fulmen FK820 · Start-Stop battery 12V 82Ah 800A
- We reply within 4 working hours
- Fixed price before you pay
Secure payment
PayPal, bank transfer or cash on delivery, always over an encrypted connection.
Shipping with no surprises
For Spain, Portugal, France, Germany, Italy, Belgium and the Netherlands you see the exact cost before paying. For the rest of Europe we send you a shipping quote, with no obligation.
14 days to return your order
If it does not fit, you have 14 days from delivery to return it unused.
Does it fit your vehicle? Check by number plate or VIN
Enter your number plate or chassis number (VIN): we check whether this battery is compatible with your vehicle.
Who the Fulmen FK820 is for
The Fulmen FK820 is a battery for cars with Start-Stop: it withstands many more starting and partial-discharge cycles than a conventional battery and powers the electronics every time the engine stops at the lights. It takes repeated discharges without losing capacity the way a conventional battery would.
At 82 Ah it moves into large diesels, SUVs, vans and cars with heavy electrical equipment. The FK820 belongs to the Fulmen FULMEN AGM range. More Fulmen batteries
Fulmen FK820 vs FK800 and FK720: differences
How the FK820 compares with Fulmen batteries of similar size and capacity:
| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulmen FK820 (this one) | 82 Ah | 800 A | 315 × 175 × 190 | right | 23.3 kg |
| Fulmen FK800 | 80 Ah | 800 A | 315 × 175 × 190 | right | 23.1 kg |
| Fulmen FK720 | 72 Ah | 760 A | 278 × 175 × 190 | right | 20.6 kg |
- Fulmen FK800: 2 Ah less, the same cranking power, the same L4 case.
- Fulmen FK720: 10 Ah less, 40 A less cranking power, a different case (278 × 175 × 190 mm).
Fulmen FK820 codes and part numbers
Look for any of these FK820 codes on your current battery or in the manufacturer's catalogue:
| Commercial reference | FK820 |
|---|---|
| EAN | 3661024047418 |
| Case size (EN) | L4 |
| Not to be confused with | Fulmen FK620 (62 Ah, 680 A), Fulmen FK720 (72 Ah, 760 A), Fulmen FK800 (80 Ah, 800 A) |
Equivalents and alternatives to the Fulmen FK820
As the FK820 is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.
| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EK820 | AGM | 82 Ah | 800 A | 315 × 175 × 190 |
| Tudor TK820 | AGM | 82 Ah | 800 A | 315 × 175 × 190 |
| Deta DK820 | AGM | 82 Ah | 800 A | 315 × 175 × 190 |
| Varta A6 | AGM | 80 Ah | 800 A | 315 × 175 × 190 |
| Deta DK800 | AGM | 80 Ah | 800 A | 315 × 175 × 190 |
| Fulmen FK800 | AGM | 80 Ah | 800 A | 315 × 175 × 190 |
Its Bosch equivalent is the Bosch S5 A11, the same as for the Varta A6. Bosch is not part of our catalogue; we list it so you can compare.
What to look at before buying the FK820
- The FK820 needs 315 × 175 × 190 mm of space (European case size L4): measure it with the hold-down clamp in place.
- The FK820 has the positive terminal on the right: compare it with your current battery.
- With 82 Ah, the FK820 replaces an original battery of that capacity or slightly less.
- Check the EN amps on your battery: if it says 800 A or less, the FK820 covers your engine.
- The FK820 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.
Inside the FK820: AGM technology
The FK820 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the FK820 can be fitted in the boot or under a seat with no risk of spills.
Frequently asked questions about the Fulmen FK820
Fulmen FK820 or FK800?
Compared with the FK820, the Fulmen FK800 has 2 Ah less. With the same cranking power (800 A), the FK820 and the FK800 differ in capacity: the one with more Ah supports more load with the engine off. Both measure 315 × 175 × 190 mm, so they fit the same tray.
Can the Fulmen FK820 be used in a car with Start-Stop?
Yes. As an AGM battery, the FK820 handles automatic engine stop and brake energy recovery, and it can replace an EFB of the same size.
How much does the Fulmen FK820 weigh?
The FK820 weighs 23.3 kg. For reference, the Fulmen FK800 (80 Ah) weighs 23.1 kg.
Which battery is equivalent to the Fulmen FK820?
Only other AGM batteries with its dimensions and polarity: Exide EK820, Tudor TK820 and Deta DK820. Neither an EFB nor a conventional battery replaces the FK820. Its Bosch equivalent is the Bosch S5 A11, the same as for the Varta A6. Bosch is not part of our catalogue; we list it so you can compare.
What case size is the Fulmen FK820?
Case size L4: 315 × 175 × 190 mm. The FK820 fits any standard L4 battery tray such as the Exide EK820.
Which side is the positive terminal on the Fulmen FK820?
The FK820 has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.
More batteries to compare with the FK820
- More start-Stop batteries (AGM and EFB)
- The whole Fulmen range
- Exide EK820 · 82 Ah, 800 A, 315×175×190 mm
- Tudor TK820 · 82 Ah, 800 A, 315×175×190 mm
Reviews
This product has no reviews yet. If you own it, tell us how it has gone: it will help whoever is looking at it now.
