# Varta YT7B-BS · Motorcycle battery 12V 7Ah 120A

![Varta YT7B-BS · Motorcycle battery 12V 7Ah 120A](https://bateriasonline.es/1172-home_default/varta-yt7b-bs-507901012.jpg)

> Varta YT7B-BS (ETN 507901012): 7 Ah motorcycle battery, 120 A (EN), 150×66×94 mm, positive terminal on the left, AGM.

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

- **Canonical URL**: https://bateriasonline.es/en/varta-yt7b-bs-507901012
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-507901012
- **EAN**: 4016987169049
- **MPN**: 507901012
- **Price**: 38,22 € (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 | 7 Ah |
| Cold cranking amps (EN) | 120 A |
| Length | 150 mm |
| Width | 66 mm |
| Height | 94 mm |
| Weight | 2.35 kg |
| Polarity | Positive terminal on the left |
| Terminal type | Y11 |
| ETN code | 507901012 |
| JIS code | YT7 B-4 YT7 B-BS |

## Quick description

Varta YT7B-BS (ETN 507 901 012, also written 507901012): motorcycle battery (AGM) with 12 V, 7 Ah and 120 A cold cranking current, measuring 150 × 66 × 94 mm, with the positive terminal on the left.

## Description

## The Varta YT7B-BS at a glance

The Varta YT7B-BS is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. It is worth keeping the YT7B-BS on a maintenance charger if the bike is laid up over winter.
At 7 Ah it covers mid-capacity motorcycles, large scooters and light quads. Varta lists the YT7B-BS in its Powersports AGM line. [See all Varta batteries](https://bateriasonline.es/en/varta-batteries)

## Varta YT7B-BS codes and part numbers

The YT7B-BS is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | YT7B-BS |
|---|---|
| ETN code | 507901012 (also 507 901 012) |
| Manufacturer short code | T7B-4/T7B-BS |
| EAN | 4016987169049 |
| Case size according to Varta | T7B-BS (T7B-4) |
| Base hold-down | B00 |
| Terminal type | Y11 |
| Also known as | Varta 507901012 · Varta 507 901 012 · Varta T7B-4 · Varta T7B-BS |
| Not to be confused with | Varta YT9B-BS (8 Ah, 115 A) |

## Equivalents and alternatives to the Varta YT7B-BS

No other reference in the catalogue fully matches the dimensions and polarity of the YT7B-BS; you will find the closest ones among our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries).

## Varta YT7B-BS vs T7B (FA), YT9B-BS and T9B (FA): which one to choose?

What sets the YT7B-BS apart from its neighbours in the Varta range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta YT7B-BS (this one) | 7 Ah | 120 A | 150 × 66 × 94 | left | 2.35 kg |
| Varta T7B (FA) | 6.5 Ah | 85 A | 150 × 66 × 93 | left | 2.3 kg |
| Varta YT9B-BS | 8 Ah | 115 A | 149 × 70 × 105 | left | 2.78 kg |
| Varta T9B (FA) | 8 Ah | 115 A | 150 × 70 × 105 | left | 2.78 kg |
| Varta TTZ10S-BS | 8 Ah | 150 A | 150 × 87 × 93 | left | 3.11 kg |

- Varta T7B (FA): 0.5 Ah less, 35 A less cranking power, the same dimensions.
- Varta YT9B-BS: 1 Ah more, 5 A less cranking power, a different height (105 mm instead of 94 mm). It only fits if there is room for 105 mm of height.
- Varta T9B (FA): 1 Ah more, 5 A less cranking power, a different height (105 mm instead of 94 mm). It only fits if there is room for 105 mm of height.
- Varta TTZ10S-BS: 1 Ah more, 30 A more cranking power, a different case (150 × 87 × 93 mm).

## Check this before ordering the Varta YT7B-BS

- Length, width and height of the YT7B-BS: 150 × 66 × 94 mm.
- Polarity of the YT7B-BS: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- Your current battery should say about 7 Ah; a little more is also fine.
- Cold cranking: 120 A (EN), equal to or higher than the original.

## Frequently asked questions about the Varta YT7B-BS

### Varta YT7B-BS or T7B (FA)?

Compared with the YT7B-BS, the Varta T7B (FA) has 0.5 Ah less and 35 A less cranking power. The YT7B-BS cranks harder; the T7B (FA) is only a good option if your original battery says 85 A or less. Both measure 150 × 66 × 94 mm, so they fit the same tray.

### Varta YT7B-BS or YT9B-BS/T9B (FA): what changes?

Mainly the height: the YT7B-BS is 94 mm tall and the Varta YT9B-BS 105 mm, with the same length and width. In capacity and cranking power, the YT9B-BS offers 8 Ah and 115 A against 7 Ah and 120 A. The Varta T9B (FA) is 105 mm tall, with 8 Ah and 115 A. Before choosing between the YT7B-BS and the YT9B-BS, measure the free height of the battery compartment with the cover or bonnet closed.

### Is the Varta 507901012 the same battery as the Varta YT7B-BS?

Yes. 507901012 is the ETN code Varta uses for its YT7B-BS battery, so you can search for it by either code.

### How much does the Varta YT7B-BS weigh?

The YT7B-BS weighs 2.35 kg. For reference, the Varta T7B (FA) (6.5 Ah) weighs 2.3 kg.

### Which side is the positive terminal on the Varta YT7B-BS?

The YT7B-BS has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.

## AGM technology in the YT7B-BS

The YT7B-BS is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. It withstands many more cycles than a conventional lead battery, at the cost of being more sensitive to overcharging.

## Other options if you are unsure about the YT7B-BS

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Varta range](https://bateriasonline.es/en/varta-batteries)

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