# Varta YT12B-BS · Motorcycle battery 12V 12Ah 215A

![Varta YT12B-BS · Motorcycle battery 12V 12Ah 215A](https://bateriasonline.es/1391-home_default/varta-yt12b-bs-512901019.jpg)

> Varta YT12B-BS (ETN 512901019): 12 Ah motorcycle battery, 215 A (EN), 151×70×131 mm, positive terminal on the right, AGM.

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

- **Canonical URL**: https://bateriasonline.es/en/varta-yt12b-bs-512901019
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-512901019
- **EAN**: 4016987127483
- **MPN**: 512901019
- **Price**: 65,86 € (VAT incl., Spain)
- **Last updated**: 2026-11-09

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Varta |
| Range | VARTA PowerSports AGM |
| Application | Motorcycles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 12 Ah |
| Cold cranking amps (EN) | 215 A |
| Length | 151 mm |
| Width | 70 mm |
| Height | 131 mm |
| Weight | 4 kg |
| Polarity | Positive terminal on the right |
| Terminal type | Y11 |
| ETN code | 512901019 |
| JIS code | YT12 B-4 YT12 B-BS |

## Quick description

Varta YT12B-BS (ETN 512 901 019, also written 512901019): motorcycle battery (AGM) with 12 V, 12 Ah and 215 A cold cranking current, measuring 151 × 70 × 131 mm, with the positive terminal on the right.

## Description

## The Varta YT12B-BS at a glance

The Varta YT12B-BS is made for motorcycles, scooters and quads. It handles frame vibration and idle periods better than an adapted car battery.
At 12 Ah it covers mid-capacity motorcycles, large scooters and light quads. The YT12B-BS belongs to the Varta VARTA PowerSports AGM range. [The full range of Varta batteries](https://bateriasonline.es/en/varta-batteries)

## Varta YT12B-BS codes and part numbers

This is how the Varta YT12B-BS appears on the label and in parts catalogues:

| Commercial reference | YT12B-BS |
|---|---|
| ETN code | 512901019 (also 512 901 019) |
| EAN | 4016987127483 |
| Terminal type | Y11 |
| Also known as | Varta 512901019 · Varta 512 901 019 |
| Not to be confused with | Varta YT12A-BS (11 Ah, 160 A, positive terminal on the left), Varta YT14B-BS (13 Ah, 190 A), Varta T12B-BS (10 Ah, 160 A, positive terminal on the left) |

## Equivalents and alternatives to the Varta YT12B-BS

No other reference in the catalogue fully matches the dimensions and polarity of the YT12B-BS; you will find the closest ones among our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries).

## Varta YT12B-BS vs YTX14L-BS, YT14B-BS and B10L (FA)

What sets the YT12B-BS apart from its neighbours in the Varta range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta YT12B-BS (this one) | 12 Ah | 215 A | 151 × 70 × 131 | right | 4 kg |
| Varta YTX14L-BS | 12 Ah | 200 A | 150 × 87 × 146 | right | 4.37 kg |
| Varta YT14B-BS | 13 Ah | 190 A | 152 × 70 × 150 | right | 6.4 kg |
| Varta B10L (FA) | 10 Ah | 120 A | 133 × 90 × 142 | right | 3.68 kg |

- Varta YTX14L-BS: the same capacity, 15 A less cranking power, a different case (150 × 87 × 146 mm).
- Varta YT14B-BS: 1 Ah more, 25 A less cranking power, a different height (150 mm instead of 131 mm). It only fits if there is room for 150 mm of height.
- Varta B10L (FA): 2 Ah less, 95 A less cranking power, a different case (133 × 90 × 142 mm).

## Before ordering the YT12B-BS, check this

- Cold cranking: 215 A (EN), equal to or higher than the original.
- With 12 Ah, the YT12B-BS replaces an original battery of that capacity or slightly less.
- The YT12B-BS has the positive terminal on the right: compare it with your current battery.
- The YT12B-BS needs 151 × 70 × 131 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Varta YT12B-BS

### Varta YT12B-BS or YTX14L-BS?

Compared with the YT12B-BS, the Varta YTX14L-BS has 15 A less cranking power. The YT12B-BS cranks harder; the YTX14L-BS is only a good option if your original battery says 200 A or less. Mind the space: the YTX14L-BS measures 150 × 87 × 146 mm.

### Varta YT12B-BS or YT14B-BS: what changes?

Mainly the height: the YT12B-BS is 131 mm tall and the Varta YT14B-BS 150 mm, with the same length and width. In capacity and cranking power, the YT14B-BS offers 13 Ah and 190 A against 12 Ah and 215 A. Before choosing between the YT12B-BS and the YT14B-BS, measure the free height of the battery compartment with the cover or bonnet closed.

### Is the Varta 512901019 the same battery as the Varta YT12B-BS?

Yes. 512901019 is the ETN code Varta uses for its YT12B-BS battery, so you can search for it by either code.

### How much does the Varta YT12B-BS weigh?

The YT12B-BS weighs 4 kg. For reference, the Varta YTX14L-BS (12 Ah) weighs 4.37 kg.

### Which side is the positive terminal on the Varta YT12B-BS?

The YT12B-BS has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.

### 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.

## AGM technology in the YT12B-BS

Inside, the YT12B-BS has glass fibre separators (AGM) that hold the electrolyte. The YT12B-BS needs a charger with an AGM mode that does not exceed 14.7 V.

## More batteries to compare with the YT12B-BS

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Varta catalogue](https://bateriasonline.es/en/varta-batteries)

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