# Fulbat FB30L-B · Motorcycle battery 12V 31.6Ah 300A

![Fulbat FB30L-B · Motorcycle battery 12V 31.6Ah 300A](https://bateriasonline.es/405-home_default/fulbat-fb30l-b.jpg)

> Fulbat FB30L-B: 31.6 Ah motorcycle battery, 300 A (EN), 165×130×176 mm, positive terminal on the right. Equivalent to Exide EB30L-B and Varta YB30L-B.

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

- **Canonical URL**: https://bateriasonline.es/en/fulbat-fb30l-b
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FB30L-B
- **MPN**: FB30L-B
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle DRY |
| Application | Motorcycles |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 31.6 Ah |
| Cold cranking amps (EN) | 300 A |
| Length | 165 mm |
| Width | 130 mm |
| Height | 176 mm |
| Weight | 8.71 kg |
| Polarity | Positive terminal on the right |

## Quick description

The Fulbat FB30L-B is a motorcycle battery with 12 V, 31.6 Ah and 300 A cold cranking current, measuring 165 × 130 × 176 mm, with the positive terminal on the right.

## Description

## The Fulbat FB30L-B at a glance

The Fulbat FB30L-B is made for motorcycles, scooters and quads. It is worth keeping the FB30L-B on a maintenance charger if the bike is laid up over winter.
At 31.6 Ah it is a large battery for heavy motorcycles, jet skis and utility quads. The FB30L-B belongs to the Fulbat FULBAT Motorcycle DRY range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Fulbat FB30L-B codes and part numbers

This is how the Fulbat FB30L-B appears on the label and in parts catalogues:

| Commercial reference | FB30L-B |
|---|---|
| Not to be confused with | Fulbat FB3L-B (3.2 Ah, 32 A) |

## Equivalents and alternatives to the Fulbat FB30L-B

Same dimensions and polarity as the FB30L-B, with similar capacity and cranking power; as a conventional battery, the FB30L-B can also be replaced by an EFB or AGM of the same size if you want more cycles.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EB30L-B | Lead-acid | 30 Ah | 300 A | 165 × 130 × 175 |
| Varta YB30L-B | Lead-acid | 30 Ah | 300 A | 165 × 132 × 176 |

## Fulbat FB30L-B vs FIX30L-BS, FB30CL-B and 53030

How the FB30L-B compares with Fulbat batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat FB30L-B (this one) | 31.6 Ah | 300 A | 165 × 130 × 176 | right | 8.71 kg |
| Fulbat FIX30L-BS | 31.6 Ah | 400 A | 165 × 125 × 175 | right | 9.91 kg |
| Fulbat FB30CL-B | 31.6 Ah | 300 A | 165 × 130 × 192 | right | 8.75 kg |
| Fulbat 53030 | 30 Ah | 300 A | 186 × 130 × 171 | right | 8.21 kg |

- Fulbat FIX30L-BS: the same capacity, 100 A more cranking power, a different case (165 × 125 × 175 mm), AGM technology.
- Fulbat FB30CL-B: the same capacity, the same cranking power, a different height (192 mm instead of 176 mm). It only fits if there is room for 192 mm of height.
- Fulbat 53030: 1.60 Ah less, the same cranking power, a different case (186 × 130 × 171 mm).

## Before ordering the FB30L-B, check this

- Cold cranking: 300 A (EN), equal to or higher than the original.
- With 31.6 Ah, the FB30L-B replaces an original battery of that capacity or slightly less.
- The FB30L-B has the positive terminal on the right: compare it with your current battery.
- Length, width and height of the FB30L-B: 165 × 130 × 176 mm.

## Frequently asked questions about the Fulbat FB30L-B

### Fulbat FB30L-B or FIX30L-BS?

Compared with the FB30L-B, the Fulbat FIX30L-BS has 100 A more cranking power and AGM technology. If your current battery says 400 A or more, choose the FIX30L-BS; if it says 300 A or less, the FB30L-B is enough. Mind the space: the FIX30L-BS measures 165 × 125 × 175 mm.

### Fulbat FB30L-B or FB30CL-B: what changes?

Mainly the height: the FB30L-B is 176 mm tall and the Fulbat FB30CL-B 192 mm, with the same length and width. In capacity and cranking power, the FB30CL-B offers 31.6 Ah and 300 A against 31.6 Ah and 300 A. Before choosing between the FB30L-B and the FB30CL-B, measure the free height of the battery compartment with the cover or bonnet closed.

### How much does the Fulbat FB30L-B weigh?

The FB30L-B weighs 8.71 kg. For reference, the Fulbat FIX30L-BS (31.6 Ah) weighs 9.91 kg.

### Which battery is equivalent to the Fulbat FB30L-B?

With the same dimensions, polarity and similar capacity you have the Exide EB30L-B and Varta YB30L-B. As the FB30L-B is a conventional battery, an EFB or AGM of the same size also works.

### Which side is the positive terminal on the Fulbat FB30L-B?

The FB30L-B has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.

### How do I stop the motorcycle battery going flat in winter?

Connect it to a maintenance charger or disconnect it if the bike will sit for more than a month. A flat motorcycle battery sulphates in a few weeks.

## Lead-acid technology in the FB30L-B

Inside, the FB30L-B is classic lead-acid: liquid electrolyte and lead plates. If the FB30L-B is left discharged for weeks it sulphates: a maintenance charger prevents this.

## Keep comparing: alternatives to the FB30L-B

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [More Fulbat models](https://bateriasonline.es/en/fulbat-batteries)
- [Exide EB30L-B](https://bateriasonline.es/en/exide-eb30l-b) · 30 Ah, 300 A, 165×130×175 mm
- [Varta YB30L-B](https://bateriasonline.es/en/varta-yb30l-b-530400030) · 30 Ah, 300 A, 165×132×176 mm

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