# Motobatt mb2.5u · Motorcycle battery 12V 2.5Ah

![Motobatt mb2.5u · Motorcycle battery 12V 2.5Ah](https://bateriasonline.es/3764-home_default/motobatt-mb2-5u.jpg)

> Motobatt mb2.5u: 2.5 Ah motorcycle battery, 80×70×105 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-mb2-5u
- **Language**: en
- **Brand**: Motobatt
- **Reference**: BOL-MOTOBATT-MB2.5U
- **MPN**: mb2.5u
- **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 | 2.5 Ah (C10) |
| Length | 80 mm |
| Width | 70 mm |
| Height | 105 mm |
| Weight | 1.18 kg |

## Quick description

The Motobatt mb2.5u is a motorcycle battery (AGM) with 12 V and 2.5 Ah, measuring 80 × 70 × 105 mm.

## Description

## Who the Motobatt mb2.5u is for

The Motobatt mb2.5u 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 2.5 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The mb2.5u belongs to the Motobatt MOTOBATT QUADFLEX range. [The full range of Motobatt batteries](https://bateriasonline.es/en/motobatt-batteries)

## Part numbers and codes for the Motobatt mb2.5u

The mb2.5u is listed under these codes on labels, in garages and in catalogues:

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

## Equivalents and alternatives to the Motobatt mb2.5u

We have no other battery with exactly the dimensions and polarity of the mb2.5u. Browse the rest of our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) to compare close options.

## Check this before ordering the Motobatt mb2.5u

- The mb2.5u needs 80 × 70 × 105 mm of space: measure it with the hold-down clamp in place.
- Capacity of the mb2.5u: 2.5 Ah; the same as your current battery or slightly more is fine.

## Frequently asked questions about the Motobatt mb2.5u

### How much does the Motobatt mb2.5u weigh?

1.18 kg, with 2.5 Ah of capacity.

### What are the dimensions and weight of the Motobatt mb2.5u?

It measures 80 × 70 × 105 mm and weighs 1.18 kg. Compare these figures with the tray and the hold-down clamp before ordering.

### Does the Motobatt mb2.5u come charged and ready to fit?

Sealed AGM and gel batteries leave the factory charged and ready. Conventional ones with a separate acid pack are activated when filled and should be charged before fitting.

## Inside the mb2.5u: AGM technology

The mb2.5u 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.

## More batteries to compare with the mb2.5u

- [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*