# Varta YTX12-BS · Motorcycle battery 12V 10Ah 150A

![Varta YTX12-BS · Motorcycle battery 12V 10Ah 150A](https://bateriasonline.es/1289-home_default/varta-ytx12-bs-510012015.jpg)

> Varta YTX12-BS (ETN 510012015): 10 Ah motorcycle battery, 150 A (EN), 152×88×131 mm, positive terminal on the left.

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

- **Canonical URL**: https://bateriasonline.es/en/varta-ytx12-bs-510012015
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-510012015
- **EAN**: 4016987169186
- **MPN**: 510012015
- **Price**: 29,16 € (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 | 10 Ah |
| Cold cranking amps (EN) | 150 A |
| Length | 152 mm |
| Width | 88 mm |
| Height | 131 mm |
| Weight | 3.86 kg |
| Polarity | Positive terminal on the left |
| Terminal type | Y5 |
| ETN code | 510012015 |
| JIS code | YTX12-4 YTX12-BS |

## Quick description

Varta YTX12-BS (ETN 510 012 015, also written 510012015): motorcycle battery (AGM) with 12 V, 10 Ah and 150 A cold cranking current, measuring 152 × 88 × 131 mm, with the positive terminal on the left.

## Description

## Where the Varta YTX12-BS fits

The Varta YTX12-BS is made for motorcycles, scooters and quads. It is worth keeping the YTX12-BS 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 YTX12-BS belongs to the Powersports AGM line. [See all Varta batteries](https://bateriasonline.es/en/varta-batteries)

## Part numbers and codes for the Varta YTX12-BS

Shops, garages and catalogues identify the YTX12-BS with these codes:

| Commercial reference | YTX12-BS |
|---|---|
| ETN code | 510012015 (also 510 012 015) |
| Manufacturer short code | TX12-4/TX12-BS |
| EAN | 4016987169186 |
| Case size according to Varta | TX12-BS (TX12-4) |
| Base hold-down | B00 |
| Terminal type | Y5 |
| Also known as | Varta 510012015 · Varta 510 012 015 · Varta TX12-4 · Varta TX12-BS |
| Not to be confused with | Varta YTX16-BS (14 Ah, 210 A), Varta YTX14-BS (12 Ah, 200 A) |

## Equivalents and alternatives to the Varta YTX12-BS

Other AGM batteries that fit the YTX12-BS's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide AGM12-10 | AGM | 10 Ah | 150 A | 150 × 90 × 130 |
| Exide ETX12-BS | AGM | 10 Ah | 150 A | 150 × 90 × 130 |
| Fulbat FTX12-BS | AGM | 10.5 Ah | 180 A | 150 × 87 × 130 |
| Varta YTX12-4 (FA) | AGM | 10 Ah | 170 A | 150 × 87 × 130 |

## Varta YTX12-BS vs YTX12-4 (FA), T12A (FA) and TZ10S (FA): differences

What sets the YTX12-BS apart from its neighbours in the Varta range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta YTX12-BS (this one) | 10 Ah | 150 A | 152 × 88 × 131 | left | 3.86 kg |
| Varta YTX12-4 (FA) | 10 Ah | 170 A | 150 × 87 × 130 | left | 3.86 kg |
| Varta T12A (FA) | 10 Ah | 145 A | 150 × 88 × 105 | left | 3.29 kg |
| Varta TZ10S (FA) | 9 Ah | 150 A | 150 × 87 × 93 | left | 3.15 kg |
| Varta T12B-BS | 10 Ah | 160 A | 151 × 70 × 131 | left | 3.55 kg |

- Varta YTX12-4 (FA): the same capacity, 20 A more cranking power, the same dimensions.
- Varta T12A (FA): the same capacity, 5 A less cranking power, a different height (105 mm instead of 131 mm). It is the option if your battery tray cannot take the 131 mm height of the YTX12-BS.
- Varta TZ10S (FA): 1 Ah less, the same cranking power, a different height (93 mm instead of 131 mm). It is the option if your battery tray cannot take the 131 mm height of the YTX12-BS.
- Varta T12B-BS: the same capacity, 10 A more cranking power, a different case (151 × 70 × 131 mm).

## Before ordering the YTX12-BS, check this

- Measure the space: the YTX12-BS takes up 152 × 88 × 131 mm.
- With the terminals facing you, the positive terminal of the YTX12-BS is on the left.
- Your current battery should say about 10 Ah; a little more is also fine.
- Check the EN amps on your battery: if it says 150 A or less, the YTX12-BS covers your engine.

## Frequently asked questions about the Varta YTX12-BS

### YTX12-BS or YTX12-4 (FA): which one suits me?

Compared with the YTX12-BS, the Varta YTX12-4 (FA) has 20 A more cranking power. If your current battery says 170 A or more, choose the YTX12-4 (FA); if it says 150 A or less, the YTX12-BS is enough. Both measure 152 × 88 × 131 mm, so they fit the same tray.

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

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

### Is the Varta 510012015 the same battery as the Varta YTX12-BS?

Yes. 510012015 is the ETN code Varta uses for its YTX12-BS battery, so you can search for it by either code.

### How much does the Varta YTX12-BS weigh?

3.86 kg, with 10 Ah of capacity. For reference, the Varta YTX12-4 (FA) (10 Ah) weighs 3.86 kg.

### Which battery is equivalent to the Varta YTX12-BS?

Only other AGM batteries with its dimensions and polarity: Exide AGM12-10, Exide ETX12-BS and Fulbat FTX12-BS. Neither an EFB nor a conventional battery replaces the YTX12-BS.

### Which side is the positive terminal on the Varta YTX12-BS?

On the YTX12-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 Varta YTX12-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.

## Inside the YTX12-BS: AGM technology

Inside, the YTX12-BS has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## More batteries to compare with the YTX12-BS

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Varta range](https://bateriasonline.es/en/varta-batteries)
- [Exide AGM12-10](https://bateriasonline.es/en/exide-agm12-10) · 10 Ah, 150 A, 150×90×130 mm
- [Exide ETX12-BS](https://bateriasonline.es/en/exide-etx12-bs) · 10 Ah, 150 A, 150×90×130 mm

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