# Varta T12A (FA) · Motorcycle battery 12V 10Ah 145A

![Varta T12A (FA) · Motorcycle battery 12V 10Ah 145A](https://bateriasonline.es/1464-home_default/varta-t12a-fa-510909015.jpg)

> Varta T12A (FA) (ETN 510909015): 10 Ah motorcycle battery, 145 A (EN), 150×88×105 mm, positive terminal on the left, AGM. Equivalent to Varta YT12A-BS.

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

- **Canonical URL**: https://bateriasonline.es/en/varta-t12a-fa-510909015
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-510909015
- **EAN**: 4016987169179
- **MPN**: 510909015
- **Last updated**: 2026-11-09

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Varta |
| Range | VARTA PowerSports AGM Active |
| Application | Motorcycles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 10 Ah (C10) |
| Cold cranking amps (EN) | 145 A |
| Length | 150 mm |
| Width | 88 mm |
| Height | 105 mm |
| Weight | 3.29 kg |
| Polarity | Positive terminal on the left |
| Terminal type | Y11 |
| ETN code | 510909015 |
| JIS code | T12 A YT12 A |

## Quick description

Varta T12A (FA) (ETN 510 909 015, also written 510909015): motorcycle battery (AGM) with 12 V, 10 Ah and 145 A cold cranking current, measuring 150 × 88 × 105 mm, with the positive terminal on the left.

## Description

## Where the Varta T12A (FA) fits

The Varta T12A (FA) is made for motorcycles, scooters and quads. It is worth keeping the T12A (FA) on a maintenance charger if the bike is laid up over winter.
At 10 Ah it covers mid-capacity motorcycles, large scooters and light quads. In the Varta catalogue, the T12A (FA) belongs to the Powersports AGM Active line. [More Varta batteries](https://bateriasonline.es/en/varta-batteries)

## Part numbers and codes for the Varta T12A (FA)

This is how the Varta T12A (FA) appears on the label and in parts catalogues:

| Commercial reference | T12A (FA) |
|---|---|
| ETN code | 510909015 (also 510 909 015) |
| EAN | 4016987169179 |
| Case size according to Varta | BT12A-BS |
| Base hold-down | B00 |
| Terminal type | Y11 |
| Also known as | Varta 510909015 · Varta 510 909 015 · BT12A-BS |
| Not to be confused with | Varta T12B (FA) (10 Ah, 160 A), Varta B12A (FA) (12 Ah, 125 A) |

## Equivalents and alternatives to the Varta T12A (FA)

Other AGM batteries that fit the T12A (FA)'s tray with the same polarity: an AGM can only be replaced by another AGM.

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

## Varta T12A (FA) vs YT12A-BS, YTX12-BS and TZ10S (FA): which one to choose?

What sets the T12A (FA) apart from its neighbours in the Varta range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta T12A (FA) (this one) | 10 Ah | 145 A | 150 × 88 × 105 | left | 3.29 kg |
| Varta YT12A-BS | 11 Ah | 160 A | 150 × 88 × 105 | left | 3.52 kg |
| Varta YTX12-BS | 10 Ah | 150 A | 152 × 88 × 131 | left | 3.86 kg |
| Varta TZ10S (FA) | 9 Ah | 150 A | 150 × 87 × 93 | left | 3.15 kg |
| Varta TZ12S (FA) | 11 Ah | 210 A | 150 × 87 × 110 | left | 3.81 kg |

- Varta YT12A-BS: 1 Ah more, 15 A more cranking power, the same dimensions.
- Varta YTX12-BS: the same capacity, 5 A more cranking power, a different height (131 mm instead of 105 mm). It only fits if there is room for 131 mm of height.
- Varta TZ10S (FA): 1 Ah less, 5 A more cranking power, a different height (93 mm instead of 105 mm). It is the option if your battery tray cannot take the 105 mm height of the T12A (FA).
- Varta TZ12S (FA): 1 Ah more, 65 A more cranking power, a different case (150 × 87 × 110 mm).

## What to look at before buying the T12A (FA)

- Length, width and height of the T12A (FA): 150 × 88 × 105 mm.
- The T12A (FA) has the positive terminal on the left: compare it with your current battery.
- Capacity of the T12A (FA): 10 Ah; the same as your current battery or slightly more is fine.
- Cold cranking: 145 A (EN), equal to or higher than the original.

## Frequently asked questions about the Varta T12A (FA)

### T12A (FA) or YT12A-BS: which one suits me?

Compared with the T12A (FA), the Varta YT12A-BS has 1 Ah more and 15 A more cranking power. If your current battery says 160 A or more, choose the YT12A-BS; if it says 145 A or less, the T12A (FA) is enough. Both measure 150 × 88 × 105 mm, so they fit the same tray.

### Varta T12A (FA) or YTX12-BS/TZ10S (FA): what changes?

Mainly the height: the T12A (FA) is 105 mm tall and the Varta YTX12-BS 131 mm, with the same length and width. In capacity and cranking power, the YTX12-BS offers 10 Ah and 150 A against 10 Ah and 145 A. The Varta TZ10S (FA) is 93 mm tall, with 9 Ah and 150 A. Before choosing between the T12A (FA) and the YTX12-BS, measure the free height of the battery compartment with the cover or bonnet closed.

### Is the Varta 510909015 the same battery as the Varta T12A (FA)?

Yes. 510909015 is the ETN code Varta uses for its T12A (FA) battery, so you can search for it by either code.

### How much does the Varta T12A (FA) weigh?

3.29 kg, with 10 Ah of capacity. For reference, the Varta YT12A-BS (11 Ah) weighs 3.52 kg.

### Which battery is equivalent to the Varta T12A (FA)?

Only other AGM batteries with its dimensions and polarity: Motobatt MBTX9U, Fulbat FTX9-BS and Varta YT12A-BS. Neither an EFB nor a conventional battery replaces the T12A (FA).

### Which side is the positive terminal on the Varta T12A (FA)?

On the T12A (FA), 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.

## Inside the T12A (FA): AGM technology

Inside, the T12A (FA) has glass fibre separators (AGM) that hold the electrolyte. The T12A (FA) needs a charger with an AGM mode that does not exceed 14.7 V.

## Keep comparing: alternatives to the T12A (FA)

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [More Varta models](https://bateriasonline.es/en/varta-batteries)
- [Motobatt MBTX9U](https://bateriasonline.es/en/motobatt-mbtx9u) · 10.5 Ah, 160 A, 151×87×105 mm
- [Fulbat FTX9-BS](https://bateriasonline.es/en/fulbat-ftx9-bs) · 8.4 Ah, 135 A, 150×87×105 mm

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