# Exide ETX20H-BS · Motorcycle battery 12V 18Ah 270A

![Exide ETX20H-BS · Motorcycle battery 12V 18Ah 270A](https://bateriasonline.es/351-home_default/exide-etx20h-bs.jpg)

> Exide ETX20H-BS: 18 Ah motorcycle battery, 270 A (EN), 175×90×155 mm, positive terminal on the left, AGM. Equivalent to Exide AGM12-19.1.

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

- **Canonical URL**: https://bateriasonline.es/en/exide-etx20h-bs
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-ETX20H-BS
- **EAN**: 3661024033893
- **MPN**: ETX20H-BS
- **Price**: 56,35 € (VAT incl., Spain)
- **Last updated**: 2026-11-09

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Exide |
| Range | EXIDE MOTORCYCLE AGM 12 V |
| Application | Motorcycles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 18 Ah |
| Cold cranking amps (EN) | 270 A |
| Length | 175 mm |
| Width | 90 mm |
| Height | 155 mm |
| Weight | 6.1 kg |
| Polarity | Positive terminal on the left |
| Terminal type | M04 |
| JIS code | YTX20 H-BS |

## Quick description

The Exide ETX20H-BS is a motorcycle battery (AGM) with 12 V, 18 Ah and 270 A cold cranking current, measuring 175 × 90 × 155 mm, with the positive terminal on the left. Need the positive terminal on the right? The same battery is the Exide AGM12-19.

## Description

## Where the Exide ETX20H-BS fits

The Exide ETX20H-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 ETX20H-BS on a maintenance charger if the bike is laid up over winter.
At 18 Ah it goes into large-capacity motorcycles, adventure bikes, customs and quads. The ETX20H-BS belongs to the Exide EXIDE MOTORCYCLE AGM 12V range. [See all Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Part numbers and codes for the Exide ETX20H-BS

The ETX20H-BS is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | ETX20H-BS |
|---|---|
| JIS code | YTX20H-BS |
| EAN | 3661024033893 |
| Terminal type | M04 |
| Not to be confused with | Exide ETX20CH-BS (18 Ah, 230 A), Exide ETX20HL-BS (18 Ah, 270 A, positive terminal on the right) |

## Equivalents and alternatives to the Exide ETX20H-BS

Other AGM batteries that fit the ETX20H-BS's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Fulbat FTX20-BS | AGM | 18.9 Ah | 270 A | 175 × 87 × 155 |
| Varta TX20H (FA) | AGM | 18 Ah | 310 A | 176 × 89 × 154 |
| Varta YTX20-BS | AGM | 18 Ah | 250 A | 177 × 88 × 156 |
| Exide AGM12-19.1 | AGM | 18 Ah | 270 A | 175 × 90 × 155 |
| Motobatt MBTX20U | AGM | 21 Ah | 310 A | 175 × 87 × 155 |
| Motobatt MBTX20UHD | AGM | 21 Ah | 310 A | 175 × 87 × 155 |

## Exide ETX20H-BS vs AGM12-17, AGM12-19 and ETX20CH-BS: differences

Torn between the ETX20H-BS and another similar Exide? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide ETX20H-BS (this one) | 18 Ah | 270 A | 175 × 90 × 155 | left | 6.1 kg |
| Exide AGM12-17 | 18 Ah | 230 A | 150 × 90 × 160 | left | 5.5 kg |
| Exide AGM12-19 | 18 Ah | 270 A | 175 × 90 × 155 | right | 6.1 kg |
| Exide ETX20CH-BS | 18 Ah | 230 A | 150 × 90 × 160 | left | 5.7 kg |

- Exide AGM12-17: the same capacity, 40 A less cranking power, a different case (150 × 90 × 160 mm).
- Exide AGM12-19: identical to the ETX20H-BS except for the positive terminal, which is on the other side (positive terminal on the right).
- Exide ETX20CH-BS: the same capacity, 40 A less cranking power, a different case (150 × 90 × 160 mm).

## Before ordering the ETX20H-BS, check this

- Length, width and height of the ETX20H-BS: 175 × 90 × 155 mm.
- With the terminals facing you, the positive terminal of the ETX20H-BS is on the left.
- Your current battery should say about 18 Ah; a little more is also fine.
- Cold cranking: 270 A (EN), equal to or higher than the original.

## Frequently asked questions about the Exide ETX20H-BS

### ETX20H-BS or AGM12-17: which one suits me?

Compared with the ETX20H-BS, the Exide AGM12-17 has 40 A less cranking power. The ETX20H-BS cranks harder; the AGM12-17 is only a good option if your original battery says 230 A or less. Mind the space: the AGM12-17 measures 150 × 90 × 160 mm.

### Exide ETX20H-BS or AGM12-19: what is the difference?

Only the polarity: the ETX20H-BS has the positive terminal on the left and the AGM12-19 the positive terminal on the right. Capacity (18 Ah), cranking power and dimensions are identical.

### How much does the Exide ETX20H-BS weigh?

6.1 kg, with 18 Ah of capacity. For reference, the Exide AGM12-17 (18 Ah) weighs 5.5 kg.

### Which battery is equivalent to the Exide ETX20H-BS?

Only other AGM batteries with its dimensions and polarity: Fulbat FTX20-BS, Varta TX20H (FA) and Varta YTX20-BS. Neither an EFB nor a conventional battery replaces the ETX20H-BS.

## What it means that the ETX20H-BS is AGM

The ETX20H-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.

## Keep comparing: alternatives to the ETX20H-BS

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [More Exide models](https://bateriasonline.es/en/exide-batteries)
- [Fulbat FTX20-BS](https://bateriasonline.es/en/fulbat-ftx20-bs) · 18.9 Ah, 270 A, 175×87×155 mm
- [Varta TX20H (FA)](https://bateriasonline.es/en/varta-tx20h-fa-518909031) · 18 Ah, 310 A, 176×89×154 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*