# Fulbat FB7-A · Motorcycle battery 12V 8.4Ah 105A

![Fulbat FB7-A · Motorcycle battery 12V 8.4Ah 105A](https://bateriasonline.es/390-home_default/fulbat-fb7-a.jpg)

> Fulbat FB7-A: 8.4 Ah motorcycle battery, 105 A (EN), 135×75×133 mm, positive terminal on the left. Equivalent to Varta YB7-A. 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-fb7-a
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FB7-A
- **MPN**: FB7-A
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle DRY |
| Application | Motorcycles |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 8.4 Ah |
| Cold cranking amps (EN) | 105 A |
| Length | 135 mm |
| Width | 75 mm |
| Height | 133 mm |
| Weight | 2.74 kg |
| Polarity | Positive terminal on the left |

## Quick description

Fulbat FB7-A: motorcycle battery with 12 V, 8.4 Ah and 105 A cold cranking current, measuring 135 × 75 × 133 mm, with the positive terminal on the left.

## Description

## The Fulbat FB7-A at a glance

The Fulbat FB7-A 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 8.4 Ah it covers mid-capacity motorcycles, large scooters and light quads. The FB7-A belongs to the Fulbat FULBAT Motorcycle DRY range. [The full range of Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Part numbers and codes for the Fulbat FB7-A

The FB7-A is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | FB7-A |
|---|---|
| Not to be confused with | Fulbat FB7C-A (8.4 Ah, 85 A, positive terminal on the right) |

## Equivalents and alternatives to the Fulbat FB7-A

Batteries that fit the FB7-A's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the FB7-A.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Varta YB7-A | Lead-acid | 8 Ah | 110 A | 137 × 76 × 134 |

## Fulbat FB7-A vs FB9-B and FT9A-BS

The real differences between the FB7-A and the closest Fulbat models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat FB7-A (this one) | 8.4 Ah | 105 A | 135 × 75 × 133 | left | 2.74 kg |
| Fulbat FB9-B | 9.5 Ah | 115 A | 135 × 75 × 139 | left | 2.91 kg |
| Fulbat FT9A-BS | 9.5 Ah | 115 A | 135 × 75 × 139 | left | 2.87 kg |

- Fulbat FB9-B: 1.10 Ah more, 10 A more cranking power, a different case (135 × 75 × 139 mm).
- Fulbat FT9A-BS: 1.10 Ah more, 10 A more cranking power, a different case (135 × 75 × 139 mm), AGM technology.

## Check this before ordering the Fulbat FB7-A

- Cold cranking: 105 A (EN), equal to or higher than the original.
- With 8.4 Ah, the FB7-A replaces an original battery of that capacity or slightly less.
- The FB7-A has the positive terminal on the left: compare it with your current battery.
- Measure the space: the FB7-A takes up 135 × 75 × 133 mm.

## Frequently asked questions about the Fulbat FB7-A

### FB7-A or FB9-B: which one suits me?

Compared with the FB7-A, the Fulbat FB9-B has 1.10 Ah more and 10 A more cranking power. If your current battery says 115 A or more, choose the FB9-B; if it says 105 A or less, the FB7-A is enough. Mind the space: the FB9-B measures 135 × 75 × 139 mm.

### How much does the Fulbat FB7-A weigh?

2.74 kg, with 8.4 Ah of capacity. For reference, the Fulbat FB9-B (9.5 Ah) weighs 2.91 kg.

### Which battery is equivalent to the Fulbat FB7-A?

With the same dimensions, polarity and similar capacity you have the Varta YB7-A. As the FB7-A is a conventional battery, an EFB or AGM of the same size also works.

### Which side is the positive terminal on the Fulbat FB7-A?

On the FB7-A, 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.

### 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.

## What it means that the FB7-A is lead-acid

The FB7-A 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.

## More batteries to compare with the FB7-A

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)
- [Varta YB7-A](https://bateriasonline.es/en/varta-yb7-a-508013011) · 8 Ah, 110 A, 137×76×134 mm

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