# Exide AGM12-8 YTZ10S · Motorcycle battery 12V 8.6Ah 145A

![Exide AGM12-8 YTZ10S · Motorcycle battery 12V 8.6Ah 145A](https://bateriasonline.es/53-home_default/exide-agm12-8.jpg)

> Exide AGM12-8 (JIS YTZ10S): 8.6 Ah motorcycle battery, 145 A (EN), 150×90×95 mm, positive terminal on the left, AGM. Equivalent to Exide ETZ10-BS.

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

- **Canonical URL**: https://bateriasonline.es/en/exide-agm12-8
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-AGM12-8
- **EAN**: 3661024034005
- **MPN**: AGM12-8
- **Price**: 47,04 € (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 | 8.6 Ah |
| Cold cranking amps (EN) | 145 A |
| Length | 150 mm |
| Width | 90 mm |
| Height | 95 mm |
| Weight | 3.4 kg |
| Polarity | Positive terminal on the left |
| Terminal type | M12 |
| JIS code | YTZ10 S 12N7 E-4 B YTX7 A-BS YTX9-BS YTZ10-BS |

## Quick description

The Exide AGM12-8 (JIS YTZ10S) is a motorcycle battery (AGM) with 12 V, 8.6 Ah and 145 A cold cranking current, measuring 150 × 90 × 95 mm, with the positive terminal on the left.

## Description

## The Exide AGM12-8 at a glance

The Exide AGM12-8 is made for motorcycles, scooters and quads. It handles frame vibration and idle periods better than an adapted car battery.
At 8.6 Ah it covers mid-capacity motorcycles, large scooters and light quads. The AGM12-8 belongs to the Exide EXIDE MOTORCYCLE AGM 12V range. [The full range of Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Exide AGM12-8 codes and part numbers

Shops, garages and catalogues identify the AGM12-8 with these codes:

| Commercial reference | AGM12-8 |
|---|---|
| JIS code | YTZ10S, 12N7E-4B, YTX7A-BS, YTX9-BS, YTZ10-BS |
| EAN | 3661024034005 |
| Terminal type | M12 |
| Not to be confused with | Exide AGM12-18 (18 Ah, 250 A, positive terminal on the right), Exide AGM12-4 (3 Ah, 50 A, positive terminal on the right), Exide AGM12-5 (4 Ah, 70 A, positive terminal on the right) |

## Equivalents and alternatives to the Exide AGM12-8

As the AGM12-8 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 TZ10S (FA) | AGM | 9 Ah | 150 A | 150 × 87 × 93 |
| Varta TTZ10S-BS | AGM | 8 Ah | 150 A | 150 × 87 × 93 |
| Exide ETZ10-BS | AGM | 9 Ah | 145 A | 150 × 90 × 95 |

## Exide AGM12-8 vs ETZ10-BS, AGM12-10 and ETX12-BS: which one to choose?

Torn between the AGM12-8 and another similar Exide? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide AGM12-8 (this one) | 8.6 Ah | 145 A | 150 × 90 × 95 | left | 3.4 kg |
| Exide ETZ10-BS | 9 Ah | 145 A | 150 × 90 × 95 | left | 3.4 kg |
| Exide AGM12-10 | 10 Ah | 150 A | 150 × 90 × 130 | left | 3.9 kg |
| Exide ETX12-BS | 10 Ah | 150 A | 150 × 90 × 130 | left | 3.9 kg |
| Exide AGM12-6 | 6 Ah | 90 A | 150 × 90 × 95 | left | 2.5 kg |

- Exide ETZ10-BS: 0.40 Ah more, the same cranking power, the same dimensions.
- Exide AGM12-10: 1.40 Ah more, 5 A more cranking power, a different height (130 mm instead of 95 mm). It only fits if there is room for 130 mm of height.
- Exide ETX12-BS: 1.40 Ah more, 5 A more cranking power, a different height (130 mm instead of 95 mm). It only fits if there is room for 130 mm of height.
- Exide AGM12-6: 2.60 Ah less, 55 A less cranking power, the same dimensions.

## Before ordering the AGM12-8, check this

- The AGM12-8 needs 150 × 90 × 95 mm of space: measure it with the hold-down clamp in place.
- The AGM12-8 has the positive terminal on the left: compare it with your current battery.
- Your current battery should say about 8.6 Ah; a little more is also fine.
- Check the EN amps on your battery: if it says 145 A or less, the AGM12-8 covers your engine.

## Frequently asked questions about the Exide AGM12-8

### Exide AGM12-8 or ETZ10-BS?

Compared with the AGM12-8, the Exide ETZ10-BS has 0.40 Ah more. With the same cranking power (145 A), the AGM12-8 and the ETZ10-BS differ in capacity: the one with more Ah supports more load with the engine off. Both measure 150 × 90 × 95 mm, so they fit the same tray.

### Exide AGM12-8 or AGM12-10/ETX12-BS: what changes?

Mainly the height: the AGM12-8 is 95 mm tall and the Exide AGM12-10 130 mm, with the same length and width. In capacity and cranking power, the AGM12-10 offers 10 Ah and 150 A against 8.6 Ah and 145 A. The Exide ETX12-BS is 130 mm tall, with 10 Ah and 150 A. Before choosing between the AGM12-8 and the AGM12-10, measure the free height of the battery compartment with the cover or bonnet closed.

### How much does the Exide AGM12-8 weigh?

The AGM12-8 weighs 3.4 kg. For reference, the Exide ETZ10-BS (9 Ah) weighs 3.4 kg.

### Which battery is equivalent to the Exide AGM12-8?

Only other AGM batteries with its dimensions and polarity: Varta TZ10S (FA), Varta TTZ10S-BS and Exide ETZ10-BS. Neither an EFB nor a conventional battery replaces the AGM12-8.

### Which side is the positive terminal on the Exide AGM12-8?

The AGM12-8 has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.

### Which charger does the Exide AGM12-8 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.

## AGM technology in the AGM12-8

Inside, the AGM12-8 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 AGM12-8

- [More motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Exide catalogue](https://bateriasonline.es/en/exide-batteries)
- [Varta TZ10S (FA)](https://bateriasonline.es/en/varta-tz10s-fa-508909015) · 9 Ah, 150 A, 150×87×93 mm
- [Varta TTZ10S-BS](https://bateriasonline.es/en/varta-ttz10s-bs-508901015) · 8 Ah, 150 A, 150×87×93 mm

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