# Fulbat 6N4B-2A · Motorcycle battery 6V 4.2Ah 35A

![Fulbat 6N4B-2A · Motorcycle battery 6V 4.2Ah 35A](https://bateriasonline.es/372-home_default/fulbat-6n4b-2a.jpg)

> Fulbat 6N4B-2A: 4.2 Ah motorcycle battery, 35 A (EN), 102×48×96 mm, positive terminal on the left. Equivalent to Exide 6N4B-2A. Ask for a no-obligation quote.

**Category:** [Motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) → [Fulbat](https://bateriasonline.es/en/fulbat-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulbat-6n4b-2a
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-6N4B-2A
- **MPN**: 6N4B-2A
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle DRY |
| Application | Motorcycles |
| Technology | Lead-acid |
| Voltage | 6 V |
| Capacity | 4.2 Ah |
| Cold cranking amps (EN) | 35 A |
| Length | 102 mm |
| Width | 48 mm |
| Height | 96 mm |
| Weight | 0.93 kg |
| Polarity | Positive terminal on the left |

## Quick description

The Fulbat 6N4B-2A is a motorcycle battery with 6 V, 4.2 Ah and 35 A cold cranking current, measuring 102 × 48 × 96 mm, with the positive terminal on the left.

## Description

## Who the Fulbat 6N4B-2A is for

The Fulbat 6N4B-2A is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. It handles frame vibration and idle periods better than an adapted car battery.
At 4.2 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The 6N4B-2A belongs to the Fulbat FULBAT Motorcycle DRY range. [More Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Part numbers and codes for the Fulbat 6N4B-2A

The 6N4B-2A is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | 6N4B-2A |
|---|---|
| Not to be confused with | Fulbat 6N4-2A (4.2 Ah, 25 A, positive terminal on the right) |

## Equivalents and alternatives to the Fulbat 6N4B-2A

Batteries that fit the 6N4B-2A's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the 6N4B-2A.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide 6N4B-2A | Lead-acid | 4 Ah | 35 A | 100 × 50 × 95 |

## Check this before ordering the Fulbat 6N4B-2A

- Length, width and height of the 6N4B-2A: 102 × 48 × 96 mm.
- The 6N4B-2A has the positive terminal on the left: compare it with your current battery.
- Your current battery should say about 4.2 Ah; a little more is also fine.
- Cold cranking: 35 A (EN), equal to or higher than the original.

## Frequently asked questions about the Fulbat 6N4B-2A

### How much does the Fulbat 6N4B-2A weigh?

0.93 kg, with 4.2 Ah of capacity.

### Which battery is equivalent to the Fulbat 6N4B-2A?

With the same dimensions, polarity and similar capacity you have the Exide 6N4B-2A. As the 6N4B-2A is a conventional battery, an EFB or AGM of the same size also works.

### What is the cold cranking current of the Fulbat 6N4B-2A?

35 A to the EN standard, with 4.2 Ah capacity.

### Which side is the positive terminal on the Fulbat 6N4B-2A?

On the 6N4B-2A, 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.

### Does the Fulbat 6N4B-2A come charged and ready to fit?

Sealed AGM and gel batteries leave the factory charged and ready. Conventional ones with a separate acid pack are activated when filled and should be charged before fitting.

## Lead-acid technology in the 6N4B-2A

The 6N4B-2A is a conventional lead-acid battery, with plates immersed in liquid electrolyte. Avoid leaving them discharged, as they sulphate, and charge them with a charger that cuts off or switches to maintenance when finished.

## Other options if you are unsure about the 6N4B-2A

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [More Fulbat models](https://bateriasonline.es/en/fulbat-batteries)
- [Exide 6N4B-2A](https://bateriasonline.es/en/exide-6n4b-2a) · 4 Ah, 35 A, 100×50×95 mm

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