# Exide AGM12-4 YTX4L-BS · Motorcycle battery 12V 3Ah 50A

![Exide AGM12-4 YTX4L-BS · Motorcycle battery 12V 3Ah 50A](https://bateriasonline.es/41-home_default/exide-agm12-4.jpg)

> Exide AGM12-4 (JIS YTX4L-BS): 3 Ah motorcycle battery, 50 A (EN), 115×70×85 mm, positive terminal on the right, AGM. Equivalent to Exide ETX4L-BS.

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

- **Canonical URL**: https://bateriasonline.es/en/exide-agm12-4
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-AGM12-4
- **EAN**: 3661024033954
- **MPN**: AGM12-4
- **Price**: 26,46 € (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 | 3 Ah |
| Cold cranking amps (EN) | 50 A |
| Length | 115 mm |
| Width | 70 mm |
| Height | 85 mm |
| Weight | 1.2 kg |
| Polarity | Positive terminal on the right |
| Terminal type | M04 |
| JIS code | YTX4 L-BS YB4 L-A YB4 L-B YTZ5 S |

## Quick description

Exide AGM12-4 (JIS YTX4L-BS): motorcycle battery (AGM) with 12 V, 3 Ah and 50 A cold cranking current, measuring 115 × 70 × 85 mm, with the positive terminal on the right.

## Description

## The Exide AGM12-4 at a glance

The Exide AGM12-4 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 AGM12-4 on a maintenance charger if the bike is laid up over winter.
At 3 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The AGM12-4 belongs to the Exide EXIDE MOTORCYCLE AGM 12V range. [The full range of Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Exide AGM12-4 codes and part numbers

Look for any of these AGM12-4 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | AGM12-4 |
|---|---|
| JIS code | YTX4L-BS, YB4L-A, YB4L-B, YTZ5S |
| EAN | 3661024033954 |
| Terminal type | M04 |
| Not to be confused with | Exide AGM12-14 (12 Ah, 210 A), Exide AGM12-5 (4 Ah, 70 A), Exide AGM12-8 (8.6 Ah, 145 A, positive terminal on the left) |

## Equivalents and alternatives to the Exide AGM12-4

As the AGM12-4 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) |
|---|---|---|---|---|
| Varta YTX4L-4 (FA) | AGM | 3 Ah | 50 A | 113 × 70 × 87 |
| Exide ETX4L-BS | AGM | 3 Ah | 50 A | 115 × 70 × 85 |
| Fulbat FTX4L-BS / FTZ5S-BS | AGM | 4.2 Ah | 50 A | 113 × 70 × 85 |

## Exide AGM12-4 vs AGM12-5 and ETX5L-BS: differences

The real differences between the AGM12-4 and the closest Exide models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide AGM12-4 (this one) | 3 Ah | 50 A | 115 × 70 × 85 | right | 1.2 kg |
| Exide AGM12-5 | 4 Ah | 70 A | 115 × 70 × 105 | right | 1.8 kg |
| Exide ETX5L-BS | 4 Ah | 70 A | 115 × 70 × 105 | right | 1.9 kg |

- Exide AGM12-5: 1 Ah more, 20 A more cranking power, a different case (115 × 70 × 105 mm).
- Exide ETX5L-BS: 1 Ah more, 20 A more cranking power, a different case (115 × 70 × 105 mm).

## What to look at before buying the AGM12-4

- Length, width and height of the AGM12-4: 115 × 70 × 85 mm.
- With the terminals facing you, the positive terminal of the AGM12-4 is on the right.
- Your current battery should say about 3 Ah; a little more is also fine.
- The AGM12-4 delivers 50 A cold cranking (EN standard); do not go below what your original battery states.

## Frequently asked questions about the Exide AGM12-4

### Exide AGM12-4 or AGM12-5?

Compared with the AGM12-4, the Exide AGM12-5 has 1 Ah more and 20 A more cranking power. If your current battery says 70 A or more, choose the AGM12-5; if it says 50 A or less, the AGM12-4 is enough. Mind the space: the AGM12-5 measures 115 × 70 × 105 mm.

### How much does the Exide AGM12-4 weigh?

The AGM12-4 weighs 1.2 kg. For reference, the Exide AGM12-5 (4 Ah) weighs 1.8 kg.

### Which battery is equivalent to the Exide AGM12-4?

Only other AGM batteries with its dimensions and polarity: Varta YTX4L-4 (FA), Exide ETX4L-BS and Fulbat FTX4L-BS / FTZ5S-BS. Neither an EFB nor a conventional battery replaces the AGM12-4.

### Which side is the positive terminal on the Exide AGM12-4?

The AGM12-4 has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.

### Which charger does the Exide AGM12-4 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.

## What it means that the AGM12-4 is AGM

The AGM12-4 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the AGM12-4 can be fitted in the boot or under a seat with no risk of spills.

## Other options if you are unsure about the AGM12-4

- [More motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [More Exide models](https://bateriasonline.es/en/exide-batteries)
- [Varta YT4L-BS](https://bateriasonline.es/en/varta-yt4l-bs-503014004) · 3 Ah, 40 A, 114×71×86 mm

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