# Motobatt MB9U · Motorcycle battery 12V 11Ah 140A

![Motobatt MB9U · Motorcycle battery 12V 11Ah 140A](https://bateriasonline.es/3171-home_default/motobatt-mb9u.jpg)

> Motobatt MB9U: 11 Ah motorcycle battery, 140 A (EN), 136×76×133 mm, AGM. VAT included, shipping cost shown before you pay, 14-day returns.

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

- **Canonical URL**: https://bateriasonline.es/en/motobatt-mb9u
- **Language**: en
- **Brand**: Motobatt
- **Reference**: BOL-MOTOBATT-MB9U
- **MPN**: MB9U
- **Price**: 117,21 € (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) | 140 A |
| Length | 136 mm |
| Width | 76 mm |
| Height | 133 mm |
| Weight | 3.35 kg |
| JIS code | YB9LA2 12N7-3 B 12N7-4 A YB7 A YB7 LB YB9 B YB9LB2 12N9-3 B |

## Quick description

The Motobatt MB9U is a motorcycle battery (AGM) with 12 V, 11 Ah and 140 A cold cranking current, measuring 136 × 76 × 133 mm.

## Description

## Where the Motobatt MB9U fits

The Motobatt MB9U is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. With 11 Ah, the MB9U suits motorcycles and scooters that had a battery of that capacity.
At 11 Ah it covers mid-capacity motorcycles, large scooters and light quads. The MB9U belongs to the Motobatt MOTOBATT QUADFLEX range. [See all Motobatt batteries](https://bateriasonline.es/en/motobatt-batteries)

## Part numbers and codes for the Motobatt MB9U

Look for any of these MB9U codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | MB9U |
|---|---|
| Not to be confused with | Motobatt MB3U (3.8 Ah, 50 A), Motobatt MB5U (7 Ah, 90 A), Motobatt MB7U (6.5 Ah, 100 A) |

## Equivalents and alternatives to the Motobatt MB9U

We have no other battery with exactly the dimensions and polarity of the MB9U. Browse the rest of our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) to compare close options.

## Motobatt MB9U vs MBT12B4 and MBT14B4: which one to choose?

How the MB9U compares with Motobatt batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Motobatt MB9U (this one) | 11 Ah | 140 A | 136 × 76 × 133 | 3.35 kg |
| Motobatt MBT12B4 | 11 Ah | 150 A | 150 × 70 × 130 | 3.52 kg |
| Motobatt MBT14B4 | 13 Ah | 175 A | 150 × 70 × 145 | 4.1 kg |

- Motobatt MBT12B4: the same capacity, 10 A more cranking power, a different case (150 × 70 × 130 mm).
- Motobatt MBT14B4: 2 Ah more, 35 A more cranking power, a different case (150 × 70 × 145 mm).

## What to look at before buying the MB9U

- Check the EN amps on your battery: if it says 140 A or less, the MB9U covers your engine.
- Capacity of the MB9U: 11 Ah; the same as your current battery or slightly more is fine.
- The MB9U needs 136 × 76 × 133 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Motobatt MB9U

### MB9U or MBT12B4: which one suits me?

Compared with the MB9U, the Motobatt MBT12B4 has 10 A more cranking power. If your current battery says 150 A or more, choose the MBT12B4; if it says 140 A or less, the MB9U is enough. Mind the space: the MBT12B4 measures 150 × 70 × 130 mm.

### How much does the Motobatt MB9U weigh?

3.35 kg, with 11 Ah of capacity. For reference, the Motobatt MBT12B4 (11 Ah) weighs 3.52 kg.

### What are the dimensions and weight of the Motobatt MB9U?

It measures 136 × 76 × 133 mm and weighs 3.35 kg. Compare these figures with the tray and the hold-down clamp before ordering.

## What it means that the MB9U is AGM

The MB9U is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the MB9U can be fitted in the boot or under a seat with no risk of spills.

## Other options if you are unsure about the MB9U

- [More motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Motobatt range](https://bateriasonline.es/en/motobatt-batteries)

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