# Motobatt MB5.5U · Motorcycle battery 12V 7Ah 90A

![Motobatt MB5.5U · Motorcycle battery 12V 7Ah 90A](https://bateriasonline.es/3144-home_default/motobatt-mb5-5u.jpg)

> Motobatt MB5.5U: 7 Ah motorcycle battery, 90 A (EN), 135×60×130 mm, AGM. VAT included and shipping cost shown before you pay.

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

- **Canonical URL**: https://bateriasonline.es/en/motobatt-mb5-5u
- **Language**: en
- **Brand**: Motobatt
- **Reference**: BOL-MOTOBATT-MB5.5U
- **MPN**: MB5.5U
- **Price**: 362,31 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Motobatt |
| Range | MOTOBATT QUADFLEX |
| Application | Motorcycles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 7 Ah (C10) |
| Cold cranking amps (EN) | 90 A |
| Length | 135 mm |
| Width | 60 mm |
| Height | 130 mm |
| Weight | 2.48 kg |

## Quick description

Motobatt MB5.5U: motorcycle battery (AGM) with 12 V, 7 Ah and 90 A cold cranking current, measuring 135 × 60 × 130 mm.

## Description

## Who the Motobatt MB5.5U is for

The Motobatt MB5.5U is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. With 7 Ah, the MB5.5U suits motorcycles and scooters that had a battery of that capacity.
At 7 Ah it covers mid-capacity motorcycles, large scooters and light quads. The MB5.5U belongs to the Motobatt MOTOBATT QUADFLEX range. [More Motobatt batteries](https://bateriasonline.es/en/motobatt-batteries)

## Motobatt MB5.5U codes and part numbers

The MB5.5U is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | MB5.5U |
|---|---|
| Not to be confused with | Motobatt MB5U (7 Ah, 90 A), Motobatt mb2.5u (2.5 Ah) |

## Equivalents and alternatives to the Motobatt MB5.5U

No other reference in the catalogue fully matches the dimensions and polarity of the MB5.5U; you will find the closest ones among our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries).

## Motobatt MB5.5U vs MB7BB and MBTX7U

The real differences between the MB5.5U and the closest Motobatt models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Motobatt MB5.5U (this one) | 7 Ah | 90 A | 135 × 60 × 130 | 2.48 kg |
| Motobatt MB7BB | 9 Ah | 150 A | 150 × 60 × 130 | 3 kg |
| Motobatt MBTX7U | 8 Ah | 115 A | 114 × 70 × 128 | 2.6 kg |

- Motobatt MB7BB: 2 Ah more, 60 A more cranking power, a different case (150 × 60 × 130 mm).
- Motobatt MBTX7U: 1 Ah more, 25 A more cranking power, a different case (114 × 70 × 128 mm).

## Check this before ordering the Motobatt MB5.5U

- Length, width and height of the MB5.5U: 135 × 60 × 130 mm.
- With 7 Ah, the MB5.5U replaces an original battery of that capacity or slightly less.
- Check the EN amps on your battery: if it says 90 A or less, the MB5.5U covers your engine.

## Frequently asked questions about the Motobatt MB5.5U

### Motobatt MB5.5U or MB7BB?

Compared with the MB5.5U, the Motobatt MB7BB has 2 Ah more and 60 A more cranking power. If your current battery says 150 A or more, choose the MB7BB; if it says 90 A or less, the MB5.5U is enough. Mind the space: the MB7BB measures 150 × 60 × 130 mm.

### How much does the Motobatt MB5.5U weigh?

The MB5.5U weighs 2.48 kg. For reference, the Motobatt MB7BB (9 Ah) weighs 3 kg.

### Which charger does the Motobatt MB5.5U 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 MB5.5U

The MB5.5U 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 MB5.5U

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Motobatt catalogue](https://bateriasonline.es/en/motobatt-batteries)

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