# Varta TTZ12S-BS · Motorcycle battery 12V 9Ah 200A

![Varta TTZ12S-BS · Motorcycle battery 12V 9Ah 200A](https://bateriasonline.es/1269-home_default/varta-ttz12s-bs-509901020.jpg)

> Varta TTZ12S-BS (ETN 509901020): 9 Ah motorcycle battery, 200 A (EN), 150×87×110 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-ttz12s-bs-509901020
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-509901020
- **EAN**: 4016987169155
- **MPN**: 509901020
- **Price**: 86,73 € (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 | 9 Ah |
| Cold cranking amps (EN) | 200 A |
| Length | 150 mm |
| Width | 87 mm |
| Height | 110 mm |
| Weight | 3.8 kg |
| Polarity | Positive terminal on the left |
| Terminal type | Y11 |
| ETN code | 509901020 |
| JIS code | TTZ12 S-4 YTZ12 S-4 TTZ12 S-BS YTZ12 S-BS |

## Quick description

Varta TTZ12S-BS (ETN 509 901 020, also written 509901020): motorcycle battery (AGM) with 12 V, 9 Ah and 200 A cold cranking current, measuring 150 × 87 × 110 mm, with the positive terminal on the left.

## Description

## Who the Varta TTZ12S-BS is for

The Varta TTZ12S-BS is made for motorcycles, scooters and quads. It is worth keeping the TTZ12S-BS on a maintenance charger if the bike is laid up over winter.
At 9 Ah it covers mid-capacity motorcycles, large scooters and light quads. In the Varta catalogue, the TTZ12S-BS belongs to the Powersports AGM line. [The full range of Varta batteries](https://bateriasonline.es/en/varta-batteries)

## Varta TTZ12S-BS codes and part numbers

This is how the Varta TTZ12S-BS appears on the label and in parts catalogues:

| Commercial reference | TTZ12S-BS |
|---|---|
| ETN code | 509901020 (also 509 901 020) |
| Manufacturer short code | TZ12S-4/TZ12S-BS |
| EAN | 4016987169155 |
| Base hold-down | B00 |
| Terminal type | Y11 |
| Also known as | Varta 509901020 · Varta 509 901 020 · Varta TZ12S-4 · Varta TZ12S-BS |
| Not to be confused with | Varta TTZ10S-BS (8 Ah, 150 A), Varta TTZ14S-BS (11 Ah, 230 A) |

## Equivalents and alternatives to the Varta TTZ12S-BS

As the TTZ12S-BS 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) |
|---|---|---|---|---|
| Motobatt MBTZ14S | AGM | 11.2 Ah | 190 A | 151 × 87 × 110 |
| Exide AGM12-11 | AGM | 11 Ah | 205 A | 150 × 90 × 110 |
| Exide ETZ14-BS | AGM | 11 Ah | 205 A | 150 × 90 × 110 |
| Varta TZ12S (FA) | AGM | 11 Ah | 210 A | 150 × 87 × 110 |
| Varta TZ14S (FA) | AGM | 11 Ah | 220 A | 150 × 87 × 110 |
| Varta TTZ14S-BS | AGM | 11 Ah | 230 A | 150 × 87 × 110 |

## Varta TTZ12S-BS vs TTZ14S-BS, YTX14-4 (FA) and YTX14-BS: which one to choose?

The real differences between the TTZ12S-BS and the closest Varta models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta TTZ12S-BS (this one) | 9 Ah | 200 A | 150 × 87 × 110 | left | 3.8 kg |
| Varta TTZ14S-BS | 11 Ah | 230 A | 150 × 87 × 110 | left | 3.8 kg |
| Varta YTX14-4 (FA) | 12 Ah | 200 A | 150 × 87 × 146 | left | 4.31 kg |
| Varta YTX14-BS | 12 Ah | 200 A | 152 × 88 × 147 | left | 4.37 kg |
| Varta YTX9-BS | 8 Ah | 135 A | 152 × 88 × 106 | left | 3.04 kg |

- Varta TTZ14S-BS: 2 Ah more, 30 A more cranking power, the same dimensions.
- Varta YTX14-4 (FA): 3 Ah more, the same cranking power, a different height (146 mm instead of 110 mm). It only fits if there is room for 146 mm of height.
- Varta YTX14-BS: 3 Ah more, the same cranking power, a different height (147 mm instead of 110 mm). It only fits if there is room for 147 mm of height.
- Varta YTX9-BS: 1 Ah less, 65 A less cranking power, a different case (152 × 88 × 106 mm).

## Before ordering the TTZ12S-BS, check this

- Check the EN amps on your battery: if it says 200 A or less, the TTZ12S-BS covers your engine.
- Your current battery should say about 9 Ah; a little more is also fine.
- The TTZ12S-BS has the positive terminal on the left: compare it with your current battery.
- The TTZ12S-BS needs 150 × 87 × 110 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Varta TTZ12S-BS

### Varta TTZ12S-BS or TTZ14S-BS?

Compared with the TTZ12S-BS, the Varta TTZ14S-BS has 2 Ah more and 30 A more cranking power. If your current battery says 230 A or more, choose the TTZ14S-BS; if it says 200 A or less, the TTZ12S-BS is enough. Both measure 150 × 87 × 110 mm, so they fit the same tray.

### Varta TTZ12S-BS or YTX14-4 (FA)/YTX14-BS: what changes?

Mainly the height: the TTZ12S-BS is 110 mm tall and the Varta YTX14-4 (FA) 146 mm, with the same length and width. In capacity and cranking power, the YTX14-4 (FA) offers 12 Ah and 200 A against 9 Ah and 200 A. The Varta YTX14-BS is 147 mm tall, with 12 Ah and 200 A. Before choosing between the TTZ12S-BS and the YTX14-4 (FA), measure the free height of the battery compartment with the cover or bonnet closed.

### Is the Varta 509901020 the same battery as the Varta TTZ12S-BS?

Yes. 509901020 is the ETN code Varta uses for its TTZ12S-BS battery, so you can search for it by either code.

### How much does the Varta TTZ12S-BS weigh?

The TTZ12S-BS weighs 3.8 kg. For reference, the Varta TTZ14S-BS (11 Ah) weighs 3.8 kg.

### Which battery is equivalent to the Varta TTZ12S-BS?

Only other AGM batteries with its dimensions and polarity: Motobatt MBTZ14S, Exide AGM12-11 and Exide ETZ14-BS. Neither an EFB nor a conventional battery replaces the TTZ12S-BS.

### Which side is the positive terminal on the Varta TTZ12S-BS?

The TTZ12S-BS has the positive terminal on the left, 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 TTZ12S-BS

Inside, the TTZ12S-BS has glass fibre separators (AGM) that hold the electrolyte. The TTZ12S-BS needs a charger with an AGM mode that does not exceed 14.7 V.

## Other options if you are unsure about the TTZ12S-BS

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Varta range](https://bateriasonline.es/en/varta-batteries)
- [Motobatt MBTZ14S](https://bateriasonline.es/en/motobatt-mbtz14s) · 11.2 Ah, 190 A, 151×87×110 mm
- [Exide AGM12-11](https://bateriasonline.es/en/exide-agm12-11) · 11 Ah, 205 A, 150×90×110 mm

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