# Varta YTX9 (FA) · Motorcycle battery 12V 8Ah 135A

![Varta YTX9 (FA) · Motorcycle battery 12V 8Ah 135A](https://bateriasonline.es/1226-home_default/varta-ytx9-fa-508909014.jpg)

> Varta YTX9 (FA) (ETN 508909014): 8 Ah motorcycle battery, 135 A (EN), 151×87×106 mm, positive terminal on the left, AGM. Equivalent to Exide ET12A-BS.

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

- **Canonical URL**: https://bateriasonline.es/en/varta-ytx9-fa-508909014
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-508909014
- **EAN**: 4016987169100
- **MPN**: 508909014
- **Last updated**: 2026-11-09

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Varta |
| Range | VARTA PowerSports AGM Active |
| Application | Motorcycles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 8 Ah |
| Cold cranking amps (EN) | 135 A |
| Length | 151 mm |
| Width | 87 mm |
| Height | 106 mm |
| Weight | 3 kg |
| Polarity | Positive terminal on the left |
| Terminal type | Y4 |
| ETN code | 508909014 |
| JIS code | YTX9 |

## Quick description

The Varta YTX9 (FA) (ETN 508 909 014, also written 508909014) is a motorcycle battery (AGM) with 12 V, 8 Ah and 135 A cold cranking current, measuring 151 × 87 × 106 mm, with the positive terminal on the left.

## Description

## Who the Varta YTX9 (FA) is for

The Varta YTX9 (FA) is made for motorcycles, scooters and quads. With 8 Ah, the YTX9 (FA) suits motorcycles and scooters that had a battery of that capacity.
At 8 Ah it covers mid-capacity motorcycles, large scooters and light quads. In the Varta catalogue, the YTX9 (FA) belongs to the Powersports AGM Active line. [See all Varta batteries](https://bateriasonline.es/en/varta-batteries)

## Varta YTX9 (FA) codes and part numbers

This is how the Varta YTX9 (FA) appears on the label and in parts catalogues:

| Commercial reference | YTX9 (FA) |
|---|---|
| ETN code | 508909014 (also 508 909 014) |
| Manufacturer short code | TX9 (FA) |
| EAN | 4016987169100 |
| Base hold-down | B00 |
| Terminal type | Y4 |
| Also known as | Varta 508909014 · Varta 508 909 014 · Varta TX9 (FA) |

## Equivalents and alternatives to the Varta YTX9 (FA)

As the YTX9 (FA) is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Fulbat FTX9-BS | AGM | 8.4 Ah | 135 A | 150 × 87 × 105 |
| Varta YTX9-BS | AGM | 8 Ah | 135 A | 152 × 88 × 106 |
| Exide ET12A-BS | AGM | 10 Ah | 130 A | 150 × 90 × 105 |
| Motobatt MBTX9U | AGM | 10.5 Ah | 160 A | 151 × 87 × 105 |
| Varta T12A (FA) | AGM | 10 Ah | 145 A | 150 × 88 × 105 |
| Varta YT12A-BS | AGM | 11 Ah | 160 A | 150 × 88 × 105 |

## Varta YTX9 (FA) vs T12A (FA), TTZ10S-BS and TZ10S (FA): which one to choose?

How the YTX9 (FA) compares with Varta batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta YTX9 (FA) (this one) | 8 Ah | 135 A | 151 × 87 × 106 | left | 3 kg |
| Varta T12A (FA) | 10 Ah | 145 A | 150 × 88 × 105 | left | 3.29 kg |
| Varta TTZ10S-BS | 8 Ah | 150 A | 150 × 87 × 93 | left | 3.11 kg |
| Varta TZ10S (FA) | 9 Ah | 150 A | 150 × 87 × 93 | left | 3.15 kg |
| Varta TTZ12S-BS | 9 Ah | 200 A | 150 × 87 × 110 | left | 3.8 kg |

- Varta T12A (FA): 2 Ah more, 10 A more cranking power, the same dimensions.
- Varta TTZ10S-BS: the same capacity, 15 A more cranking power, a different height (93 mm instead of 106 mm). It is the option if your battery tray cannot take the 106 mm height of the YTX9 (FA).
- Varta TZ10S (FA): 1 Ah more, 15 A more cranking power, a different height (93 mm instead of 106 mm). It is the option if your battery tray cannot take the 106 mm height of the YTX9 (FA).
- Varta TTZ12S-BS: 1 Ah more, 65 A more cranking power, a different case (150 × 87 × 110 mm).

## Check this before ordering the Varta YTX9 (FA)

- The YTX9 (FA) delivers 135 A cold cranking (EN standard); do not go below what your original battery states.
- Capacity of the YTX9 (FA): 8 Ah; the same as your current battery or slightly more is fine.
- The YTX9 (FA) has the positive terminal on the left: compare it with your current battery.
- Measure the space: the YTX9 (FA) takes up 151 × 87 × 106 mm.

## Frequently asked questions about the Varta YTX9 (FA)

### Varta YTX9 (FA) or T12A (FA)?

Compared with the YTX9 (FA), the Varta T12A (FA) has 2 Ah more and 10 A more cranking power. If your current battery says 145 A or more, choose the T12A (FA); if it says 135 A or less, the YTX9 (FA) is enough. Both measure 151 × 87 × 106 mm, so they fit the same tray.

### Varta YTX9 (FA) or TTZ10S-BS/TZ10S (FA): what changes?

Mainly the height: the YTX9 (FA) is 106 mm tall and the Varta TTZ10S-BS 93 mm, with the same length and width. In capacity and cranking power, the TTZ10S-BS offers 8 Ah and 150 A against 8 Ah and 135 A. The Varta TZ10S (FA) is 93 mm tall, with 9 Ah and 150 A. Before choosing between the YTX9 (FA) and the TTZ10S-BS, measure the free height of the battery compartment with the cover or bonnet closed.

### Is the Varta 508909014 the same battery as the Varta YTX9 (FA)?

Yes. 508909014 is the ETN code Varta uses for its YTX9 (FA) battery, so you can search for it by either code.

### How much does the Varta YTX9 (FA) weigh?

The YTX9 (FA) weighs 3 kg. For reference, the Varta T12A (FA) (10 Ah) weighs 3.29 kg.

### Which battery is equivalent to the Varta YTX9 (FA)?

Only other AGM batteries with its dimensions and polarity: Fulbat FTX9-BS, Varta YTX9-BS and Exide ET12A-BS. Neither an EFB nor a conventional battery replaces the YTX9 (FA).

### Which side is the positive terminal on the Varta YTX9 (FA)?

The YTX9 (FA) has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.

### Which charger does the Varta YTX9 (FA) 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 YTX9 (FA) is AGM

Inside, the YTX9 (FA) has glass fibre separators (AGM) that hold the electrolyte. The YTX9 (FA) needs a charger with an AGM mode that does not exceed 14.7 V.

## More batteries to compare with the YTX9 (FA)

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Varta range](https://bateriasonline.es/en/varta-batteries)
- [Fulbat FTX9-BS](https://bateriasonline.es/en/fulbat-ftx9-bs) · 8.4 Ah, 135 A, 150×87×105 mm
- [Varta YTX9-BS](https://bateriasonline.es/en/varta-ytx9-bs-508012014) · 8 Ah, 135 A, 152×88×106 mm

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