# Fulbat FT12A-BS · Motorcycle battery 12V 10.5Ah 175A

![Fulbat FT12A-BS · Motorcycle battery 12V 10.5Ah 175A](https://bateriasonline.es/614-home_default/fulbat-ft12a-bs.jpg)

> Fulbat FT12A-BS: 10.5 Ah motorcycle battery, 175 A (EN), 150×88×105 mm, positive terminal on the left, AGM. Equivalent to Varta YT12A-BS and Motobatt MBTX9U.

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

- **Canonical URL**: https://bateriasonline.es/en/fulbat-ft12a-bs
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FT12A-BS
- **MPN**: FT12A-BS
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle MF |
| Application | Motorcycles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 10.5 Ah |
| Cold cranking amps (EN) | 175 A |
| Length | 150 mm |
| Width | 88 mm |
| Height | 105 mm |
| Weight | 3.5 kg |
| Polarity | Positive terminal on the left |

## Quick description

Fulbat FT12A-BS: motorcycle battery (AGM) with 12 V, 10.5 Ah and 175 A cold cranking current, measuring 150 × 88 × 105 mm, with the positive terminal on the left.

## Description

## The Fulbat FT12A-BS at a glance

The Fulbat FT12A-BS is made for motorcycles, scooters and quads. It handles frame vibration and idle periods better than an adapted car battery.
At 10.5 Ah it covers mid-capacity motorcycles, large scooters and light quads. The FT12A-BS belongs to the Fulbat FULBAT Motorcycle MF range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Equivalents and alternatives to the Fulbat FT12A-BS

Other AGM batteries that fit the FT12A-BS's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Varta YT12A-BS | AGM | 11 Ah | 160 A | 150 × 88 × 105 |
| Motobatt MBTX9U | AGM | 10.5 Ah | 160 A | 151 × 87 × 105 |

## Fulbat FT12A-BS vs FTX9-BS, FTX12-BS and FTX14-BS: which one to choose?

What sets the FT12A-BS apart from its neighbours in the Fulbat range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat FT12A-BS (this one) | 10.5 Ah | 175 A | 150 × 88 × 105 | left | 3.5 kg |
| Fulbat FTX9-BS | 8.4 Ah | 135 A | 150 × 87 × 105 | left | 2.99 kg |
| Fulbat FTX12-BS | 10.5 Ah | 180 A | 150 × 87 × 130 | left | 3.83 kg |
| Fulbat FTX14-BS | 12.6 Ah | 200 A | 150 × 87 × 145 | left | 4.29 kg |

- Fulbat FTX9-BS: 2.10 Ah less, 40 A less cranking power, the same dimensions.
- Fulbat FTX12-BS: the same capacity, 5 A more cranking power, a different height (130 mm instead of 105 mm). It only fits if there is room for 130 mm of height.
- Fulbat FTX14-BS: 2.10 Ah more, 25 A more cranking power, a different case (150 × 87 × 145 mm).

## What to look at before buying the FT12A-BS

- The FT12A-BS needs 150 × 88 × 105 mm of space: measure it with the hold-down clamp in place.
- With the terminals facing you, the positive terminal of the FT12A-BS is on the left.
- With 10.5 Ah, the FT12A-BS replaces an original battery of that capacity or slightly less.
- The FT12A-BS delivers 175 A cold cranking (EN standard); do not go below what your original battery states.

## Frequently asked questions about the Fulbat FT12A-BS

### FT12A-BS or FTX9-BS: which one suits me?

Compared with the FT12A-BS, the Fulbat FTX9-BS has 2.10 Ah less and 40 A less cranking power. The FT12A-BS cranks harder; the FTX9-BS is only a good option if your original battery says 135 A or less. Both measure 150 × 88 × 105 mm, so they fit the same tray.

### Fulbat FT12A-BS or FTX12-BS: what changes?

Mainly the height: the FT12A-BS is 105 mm tall and the Fulbat FTX12-BS 130 mm, with the same length and width. In capacity and cranking power, the FTX12-BS offers 10.5 Ah and 180 A against 10.5 Ah and 175 A. Before choosing between the FT12A-BS and the FTX12-BS, measure the free height of the battery compartment with the cover or bonnet closed.

### How much does the Fulbat FT12A-BS weigh?

3.5 kg, with 10.5 Ah of capacity. For reference, the Fulbat FTX9-BS (8.4 Ah) weighs 2.99 kg.

### Which battery is equivalent to the Fulbat FT12A-BS?

Only other AGM batteries with its dimensions and polarity: Varta YT12A-BS and Motobatt MBTX9U. Neither an EFB nor a conventional battery replaces the FT12A-BS.

### Which side is the positive terminal on the Fulbat FT12A-BS?

On the FT12A-BS, 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.

### Which charger does the Fulbat FT12A-BS need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

## What it means that the FT12A-BS is AGM

Inside, the FT12A-BS has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## Other options if you are unsure about the FT12A-BS

- [More motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [More Fulbat models](https://bateriasonline.es/en/fulbat-batteries)
- [Varta YT12A-BS](https://bateriasonline.es/en/varta-yt12a-bs-511901016) · 11 Ah, 160 A, 150×88×105 mm
- [Motobatt MBTX9U](https://bateriasonline.es/en/motobatt-mbtx9u) · 10.5 Ah, 160 A, 151×87×105 mm

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