# Fulmen FJ050C · Truck battery 12V 50Ah 800A

![Fulmen FJ050C · Truck battery 12V 50Ah 800A](https://bateriasonline.es/2723-home_default/fulmen-fj050c.jpg)

> Fulmen FJ050C: 50 Ah truck battery, 800 A (EN), 260×173×206 mm, positive terminal on the left, AGM. Equivalent to Exide EJ050C and Deta DJ050C.

**Category:** [Truck, commercial and agricultural vehicle batteries](https://bateriasonline.es/en/truck-agricultural-batteries) → [Fulmen](https://bateriasonline.es/en/fulmen-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulmen-fj050c
- **Language**: en
- **Brand**: Fulmen
- **Reference**: BOL-FULMEN-FJ050C
- **EAN**: 3661024046664
- **MPN**: FJ050C
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulmen |
| Range | FULMEN PowerPRO Agricultura y Construccion |
| Application | Trucks and commercial vehicles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 50 Ah |
| Cold cranking amps (EN) | 800 A |
| Length | 260 mm |
| Width | 173 mm |
| Height | 206 mm |
| Weight | 17.9 kg |
| Polarity | Positive terminal on the left |

## Quick description

Fulmen FJ050C: truck battery (AGM) with 12 V, 50 Ah and 800 A cold cranking current, measuring 260 × 173 × 206 mm, with the positive terminal on the left.

## Description

## Who the Fulmen FJ050C is for

The Fulmen FJ050C turns heavy diesel engines and powers cabs with high consumption. It is built to resist constant vibration and long shifts.
The FJ050C belongs to the Fulmen FULMEN PowerPRO Agricultura y Construccion range. [See all Fulmen batteries](https://bateriasonline.es/en/fulmen-batteries)

## AGM technology in the FJ050C

Inside, the FJ050C has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## Equivalents and alternatives to the Fulmen FJ050C

Other AGM batteries that fit the FJ050C's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EJ050C | AGM | 50 Ah | 800 A | 260 × 173 × 206 |
| Deta DJ050C | AGM | 50 Ah | 800 A | 260 × 173 × 206 |

## Part numbers and codes for the Fulmen FJ050C

Shops, garages and catalogues identify the FJ050C with these codes:

| Commercial reference | FJ050C |
|---|---|
| EAN | 3661024046664 |

## Check this before ordering the Fulmen FJ050C

- The FJ050C delivers 800 A cold cranking (EN standard); do not go below what your original battery states.
- Your current battery should say about 50 Ah; a little more is also fine.
- The FJ050C has the positive terminal on the left: compare it with your current battery.
- Length, width and height of the FJ050C: 260 × 173 × 206 mm.

## Frequently asked questions about the Fulmen FJ050C

### How much does the Fulmen FJ050C weigh?

17.9 kg, with 50 Ah of capacity.

### Which battery is equivalent to the Fulmen FJ050C?

Only other AGM batteries with its dimensions and polarity: Exide EJ050C and Deta DJ050C. Neither an EFB nor a conventional battery replaces the FJ050C.

### What is the cold cranking current of the Fulmen FJ050C?

800 A to the EN standard, with 50 Ah capacity.

### Which side is the positive terminal on the Fulmen FJ050C?

On the FJ050C, the positive terminal is on the left with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

## Other options if you are unsure about the FJ050C

- [All truck, commercial and agricultural vehicle batteries](https://bateriasonline.es/en/truck-agricultural-batteries)
- [Full Fulmen catalogue](https://bateriasonline.es/en/fulmen-batteries)
- [Exide EJ050C](https://bateriasonline.es/en/exide-ej050c) · 50 Ah, 800 A, 260×173×206 mm
- [Deta DJ050C](https://bateriasonline.es/en/deta-dj050c) · 50 Ah, 800 A, 260×173×206 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*