Fulmen FD2103T · Truck battery 12V 210Ah 800A GEL
Specifications
| Brand | Fulmen |
|---|---|
| Part number | FD2103T |
| Voltage (V) | 12 |
| Capacity (C20) | 210Ah (c20) |
| Cold cranking amps (EN) | 800A |
| Technology | GEL |
| Length | 518 mm |
| Width | 274 mm |
| Height | 240 mm |
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Fulmen FD2103T 12V 210Ah 800A is a professional battery for heavy commercial vehicles. Withstands constant chassis vibration, supports long cold-engine cranks and keeps auxiliary services running (tachograph, heater, refrigeration, GPS) during driver's mandatory rest stops.
Why this truck battery?
- True Heavy Dutybuilt for intensive professional use
- Long cold-diesel cranksreliable even in extreme cold
- Powers services at idletachograph, heater and lights with engine off
Voltage
12 V
Capacity
210 Ah
Cold cranking
800 A
Dimensions
518×274×240 mm
Technology
GEL
Polarity
Positive on the left
Weight
66 kg
Model
FULMEN Endurance+PRO Gel
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Truck battery Fulmen FD2103T Endurance+PRO Gel 210Ah 800A 12V
12VVoltage
210AhCapacity
800ACold cranking
66kgWeight
The Fulmen FD2103T truck battery is rated at 12 V, 210 Ah and 800 A of cold cranking current (EN) from the Endurance+PRO Gel range, and is prepared for trucks, buses, tractors and heavy machinery. It replaces the original battery without adaptation in trucks with a 518 × 274 × 240 mm format: same 210 Ah capacity and the positive terminal on the left.
- Powerful cold cranking for large-displacement diesel engines.
- Designed for 24 V installations with two batteries in series.
- GEL technology: gelled electrolyte, fully sealed and maintenance-free.
- Heavy Duty construction for intensive professional use.
What the Fulmen FD2103T is for
The Fulmen FD2103T is designed for trucks, buses, tractors and heavy machinery. In 24 V installations with two batteries in series, replace both at the same time to avoid imbalance. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 66 kg, 1 terminals and B00 hold-down.
Dimensions, polarity and mounting
It has external dimensions of 518 × 274 × 240 mm and weighs 66 kg. The positive terminal on the left 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 and 1 terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.
What Fulmen does differently
With more than a century of history, Fulmen offers complete ranges for cars, trucks, motorcycles and leisure with the industrial quality of the Exide group. We guarantee that every Fulmen arrives new, charged and with the manufacturer's full warranty.
The Fulmen FD2103T: Endurance+PRO Gel range and GEL technology
Within the Fulmen catalogue, the Endurance+PRO Gel series groups the references designed for this use. The FD2103T is the 210 Ah model of that family, with the same performance as its siblings in other sizes.
A GEL battery is the choice when cycle resistance and safety matter most: no gases, no liquid and thousands of partial discharges in its lifetime.
How to make it last longer
In 24 V installations, check periodically that both batteries show the same voltage; an imbalance means one is failing. GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte.
Warranty and coverage
The Fulmen FD2103T comes with the manufacturer's official warranty against manufacturing defects. An important note for commercial vehicles: most trucks use two batteries connected in series (24 V installation). If you replace only one, the new battery works alongside the old one, which has already lost capacity; that imbalance shortens its life and the manufacturer may treat it as misuse. Always replace both at the same time.
When you get it and how to return it
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 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.
BCOM-FULMEN-FD2103T
Data sheet
- Brand
- FULMEN
- Reference
- FD2103T
- Model
- FULMEN Endurance+PRO Gel
- Voltage (V)
- 12
- Length
- 518 mm
- Width
- 274 mm
- Height
- 240 mm
- Weight
- 66 Kgs
- Technology
- GEL
- EAN
- 3661024047265
- Terminal layout
- Positive terminal on the left
- Terminal type
- 1
- Hold-down
- B00
- Cold cranking amps (EN)
- 800A
- Capacity (C20)
- 210Ah (c20)
- Case type
- D06
Specific References
- EAN13
- 3661024047265
- MPN
- FD2103T
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Codes and references Fulmen FD2103T
| Brand | Fulmen |
|---|---|
| Manufacturer range | FULMEN Endurance+PRO Gel |
| Manufacturer part number (MPN) | FD2103T |
| EAN-13 barcode | 3661024047265 |
| Dimensions (length × width × height) | 518 × 274 × 240 mm (518x274x240) |
Comparison: Fulmen FD2103T vs equivalents
The Fulmen FD2103T is interchangeable with these equivalent references: ED2103-T (Exide), N9 (Varta), N5 (Varta), LFD230 (Varta), C40 (Varta).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Fulmen
FD2103T
This battery
|
12V 210Ah 800A | Gel | |
Exide
ED2103-T
|
12V 210Ah 800A | Gel | €1,480.70 |
Varta
N9
|
12V 225Ah 1150A | Lead-acid | €231.95 |
Varta
N5
|
12V 220Ah 1150A | Lead-acid | €286.20 |
Varta
LFD230
|
12V 230Ah 1150A | Lead-acid | €289.30 |
Varta
C40
|
12V 240Ah 1200A | EFB | €267.60 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Recommended accessories
How to change the battery
Guide to replace a truck battery in 30-60 minutes. Truck batteries weigh 25-50 kg — we recommend working in pairs and using a carrying strap.
Step 1. Prepare the vehicle
Park on a flat surface, switch off the engine and remove the key. Make sure all lights and electrical accessories are off. Wait 1-2 minutes before starting.
Step 2. Locate the battery
Open the bonnet. The battery is usually in the engine bay, but in many modern cars it may be in the boot or under the passenger seat. Check the manual if you cannot find it.
Step 3. Disconnect the negative (−) terminal
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery (two people)
Loosen the bottom hold-down clamp. Truck batteries weigh 25-50 kg — lift in pairs with gloves and a carrying strap. Forcing the lift alone risks back injury.
Step 6. Install the new battery
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Step 7. Connect the cables
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Step 8. Verify the engine starts
Close the bonnet. Start the engine to confirm everything works. On cars with Start-Stop or a BMS, you may need to register the battery via OBD so the alternator applies the correct charging profile.
Frequently asked questions
Is the Fulmen FD2103T a GEL battery? What is GEL used for?
Yes, this model is a GEL battery: sealed lead-acid where the electrolyte is in gel form. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). Requires a GEL-specific smart charger — max charge voltage ~14.1 V (vs 14.4-14.7 V for AGM). Lifespan 6-10 years.
How is the Fulmen FD2103T battery installed in the vehicle?
In most trucks 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 trucks with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How long does the Fulmen FD2103T battery last?
Expected lifespan of the Fulmen FD2103T is 6 to 10 years in cyclic use (marine, caravan, solar) with controlled discharges. 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 FD2103T battery?
Dimensions (length × width × height) are 518×274×240 mm — also written as 518x274x240 mm — following the European DIN standard. Always measure the space in your truck before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
Does this battery fit my truck?
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 FD2103T typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the FD2103T model?
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 trucks. See the "Equivalents" section to view recommended options at the same performance level.
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