# Fulbat FB12A-A/B GEL · Motorcycle battery 12V 12.6Ah 155A

![Fulbat FB12A-A/B GEL · Motorcycle battery 12V 12.6Ah 155A](https://bateriasonline.es/516-home_default/fulbat-fb12a-a-b-gel.jpg)

> Fulbat FB12A-A/B GEL: 12.6 Ah motorcycle battery, 155 A (EN), 134×80×161 mm, positive terminal on the left, GEL.

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

- **Canonical URL**: https://bateriasonline.es/en/fulbat-fb12a-a-b-gel
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FB12A-A/B GEL
- **MPN**: FB12A-A/B GEL
- **Price**: 79,64 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle GEL |
| Application | Motorcycles |
| Technology | GEL |
| Voltage | 12 V |
| Capacity | 12.6 Ah |
| Cold cranking amps (EN) | 155 A |
| Length | 134 mm |
| Width | 80 mm |
| Height | 161 mm |
| Weight | 4.35 kg |
| Polarity | Positive terminal on the left |

## Quick description

The Fulbat FB12A-A/B GEL is a motorcycle battery with 12 V, 12.6 Ah and 155 A cold cranking current, measuring 134 × 80 × 161 mm, with the positive terminal on the left.

## Description

## Who the Fulbat FB12A-A/B GEL is for

The Fulbat FB12A-A/B GEL is made for motorcycles, scooters and quads. It handles frame vibration and idle periods better than an adapted car battery.
At 12.6 Ah it goes into large-capacity motorcycles, adventure bikes, customs and quads. The FB12A-A/B GEL belongs to the Fulbat FULBAT Motorcycle GEL range. [More Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Equivalents and alternatives to the Fulbat FB12A-A/B GEL

No other reference in the catalogue fully matches the dimensions and polarity of the FB12A-A/B GEL; you will find the closest ones among our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries).

## Fulbat FB12A-A/B GEL vs FTX14AH-BS GEL and FB14A-A2 GEL: differences

How the FB12A-A/B GEL compares with Fulbat batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat FB12A-A/B GEL (this one) | 12.6 Ah | 155 A | 134 × 80 × 161 | left | 4.35 kg |
| Fulbat FTX14AH-BS / FB14-A2/B2 GEL | 14.7 Ah | 210 A | 135 × 90 × 167 | left | 4.4 kg |
| Fulbat FB14A-A2 GEL | 14.7 Ah | 200 A | 134 × 88 × 176 | left | 5.01 kg |

- Fulbat FTX14AH-BS / FB14-A2/B2 GEL: 2.10 Ah more, 55 A more cranking power, a different case (135 × 90 × 167 mm).
- Fulbat FB14A-A2 GEL: 2.10 Ah more, 45 A more cranking power, a different case (134 × 88 × 176 mm).

## Check this before ordering the Fulbat FB12A-A/B GEL

- Measure the space: the FB12A-A/B GEL takes up 134 × 80 × 161 mm.
- With the terminals facing you, the positive terminal of the FB12A-A/B GEL is on the left.
- With 12.6 Ah, the FB12A-A/B GEL replaces an original battery of that capacity or slightly less.
- Cold cranking: 155 A (EN), equal to or higher than the original.

## Frequently asked questions about the Fulbat FB12A-A/B GEL

### Fulbat FB12A-A/B GEL or FTX14AH-BS / FB14-A2/B2 GEL?

Compared with the FB12A-A/B GEL, the Fulbat FTX14AH-BS / FB14-A2/B2 GEL has 2.10 Ah more and 55 A more cranking power. If your current battery says 210 A or more, choose the FTX14AH-BS / FB14-A2/B2 GEL; if it says 155 A or less, the FB12A-A/B GEL is enough. Mind the space: the FTX14AH-BS / FB14-A2/B2 GEL measures 135 × 90 × 167 mm.

### How much does the Fulbat FB12A-A/B GEL weigh?

The FB12A-A/B GEL weighs 4.35 kg. For reference, the Fulbat FTX14AH-BS / FB14-A2/B2 GEL (14.7 Ah) weighs 4.4 kg.

### Which side is the positive terminal on the Fulbat FB12A-A/B GEL?

The FB12A-A/B GEL has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.

### Does the Fulbat FB12A-A/B GEL 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.

## Inside the FB12A-A/B GEL: GEL technology

Inside, the FB12A-A/B GEL holds its electrolyte in gel form. To charge the FB12A-A/B GEL, use a charger with a gel profile.

## Keep comparing: alternatives to the FB12A-A/B GEL

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)

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