# Motobatt MBT12B4 · Motorcycle battery 12V 11Ah 150A

![Motobatt MBT12B4 · Motorcycle battery 12V 11Ah 150A](https://bateriasonline.es/3201-home_default/motobatt-mbt12b4.jpg)

> Motobatt MBT12B4: 11 Ah motorcycle battery, 150 A (EN), 150×70×130 mm, AGM. Equivalent to Exide AGM12-10.5 and Exide ET12B-BS.

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

- **Canonical URL**: https://bateriasonline.es/en/motobatt-mbt12b4
- **Language**: en
- **Brand**: Motobatt
- **Reference**: BOL-MOTOBATT-MBT12B4
- **MPN**: MBT12B4
- **Price**: 142,39 € (VAT incl., Spain)
- **Last updated**: 2026-11-09

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Motobatt |
| Range | MOTOBATT QUADFLEX |
| Application | Motorcycles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 11 Ah |
| Cold cranking amps (EN) | 150 A |
| Length | 150 mm |
| Width | 70 mm |
| Height | 130 mm |
| Weight | 3.52 kg |
| JIS code | YT12 BBS YT12B4 |

## Quick description

Motobatt MBT12B4: motorcycle battery (AGM) with 12 V, 11 Ah and 150 A cold cranking current, measuring 150 × 70 × 130 mm.

## Description

## The Motobatt MBT12B4 at a glance

The Motobatt MBT12B4 is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. It handles frame vibration and idle periods better than an adapted car battery.
At 11 Ah it covers mid-capacity motorcycles, large scooters and light quads. The MBT12B4 belongs to the Motobatt MOTOBATT QUADFLEX range. [See all Motobatt batteries](https://bateriasonline.es/en/motobatt-batteries)

## Motobatt MBT12B4 codes and part numbers

The MBT12B4 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | MBT12B4 |
|---|---|
| Not to be confused with | Motobatt MBT14B4 (13 Ah, 175 A) |

## Equivalents and alternatives to the Motobatt MBT12B4

As the MBT12B4 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) |
|---|---|---|---|---|
| Exide AGM12-10.5 | AGM | 10 Ah | 160 A | 150 × 70 × 130 |
| Exide ET12B-BS | AGM | 10 Ah | 160 A | 150 × 70 × 130 |
| Varta T12B (FA) | AGM | 10 Ah | 160 A | 150 × 70 × 130 |
| Varta T12B-BS | AGM | 10 Ah | 160 A | 151 × 70 × 131 |

## Motobatt MBT12B4 vs MB7BB and MBT14B4

What sets the MBT12B4 apart from its neighbours in the Motobatt range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Motobatt MBT12B4 (this one) | 11 Ah | 150 A | 150 × 70 × 130 | 3.52 kg |
| Motobatt MB7BB | 9 Ah | 150 A | 150 × 60 × 130 | 3 kg |
| Motobatt MBT14B4 | 13 Ah | 175 A | 150 × 70 × 145 | 4.1 kg |

- Motobatt MB7BB: 2 Ah less, the same cranking power, a different case (150 × 60 × 130 mm).
- Motobatt MBT14B4: 2 Ah more, 25 A more cranking power, a different case (150 × 70 × 145 mm).

## Before ordering the MBT12B4, check this

- Measure the space: the MBT12B4 takes up 150 × 70 × 130 mm.
- Your current battery should say about 11 Ah; a little more is also fine.
- The MBT12B4 delivers 150 A cold cranking (EN standard); do not go below what your original battery states.

## Frequently asked questions about the Motobatt MBT12B4

### Motobatt MBT12B4 or MB7BB?

Compared with the MBT12B4, the Motobatt MB7BB has 2 Ah less. With the same cranking power (150 A), the MBT12B4 and the MB7BB differ in capacity: the one with more Ah supports more load with the engine off. Mind the space: the MB7BB measures 150 × 60 × 130 mm.

### How much does the Motobatt MBT12B4 weigh?

The MBT12B4 weighs 3.52 kg. For reference, the Motobatt MB7BB (9 Ah) weighs 3 kg.

### Which battery is equivalent to the Motobatt MBT12B4?

Only other AGM batteries with its dimensions and polarity: Exide AGM12-10.5, Exide ET12B-BS and Varta T12B (FA). Neither an EFB nor a conventional battery replaces the MBT12B4.

### Which charger does the Motobatt MBT12B4 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 MBT12B4

The MBT12B4 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 MBT12B4

- [More motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Motobatt range](https://bateriasonline.es/en/motobatt-batteries)
- [Motobatt MB9U](https://bateriasonline.es/en/motobatt-mb9u) · 11 Ah, 140 A, 136×76×133 mm

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