# Motobatt MB18U · Motorcycle battery 12V 22.5Ah 280A

![Motobatt MB18U · Motorcycle battery 12V 22.5Ah 280A](https://bateriasonline.es/3131-home_default/motobatt-mb18u.jpg)

> Motobatt MB18U: 22.5 Ah motorcycle battery, 280 A (EN), 180×90×162 mm, AGM. Compare sizes and equivalents; 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-mb18u
- **Language**: en
- **Brand**: Motobatt
- **Reference**: BOL-MOTOBATT-MB18U
- **MPN**: MB18U
- **Price**: 362,31 € (VAT incl., Spain)
- **Last updated**: 2026-11-07

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Motobatt |
| Range | MOTOBATT QUADFLEX |
| Application | Motorcycles |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 22.5 Ah (C10) |
| Cold cranking amps (EN) | 280 A |
| Length | 180 mm |
| Width | 90 mm |
| Height | 162 mm |
| Weight | 6.8 kg |

## Quick description

Motobatt MB18U: motorcycle battery (AGM) with 12 V, 22.5 Ah and 280 A cold cranking current, measuring 180 × 90 × 162 mm.

## Description

## Who the Motobatt MB18U is for

The Motobatt MB18U is made for motorcycles, scooters and quads. With 22.5 Ah, the MB18U suits motorcycles and scooters that had a battery of that capacity.
At 22.5 Ah it is a large battery for heavy motorcycles, jet skis and utility quads. The MB18U 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 MB18U

Shops, garages and catalogues identify the MB18U with these codes:

| Commercial reference | MB18U |
|---|---|
| Not to be confused with | Motobatt MB10U (14.5 Ah, 175 A), Motobatt MB12U (15 Ah, 160 A), Motobatt MB16U (20 Ah, 240 A) |

## Equivalents and alternatives to the Motobatt MB18U

We have no other battery with exactly the dimensions and polarity of the MB18U. Browse the rest of our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) to compare close options.

## Motobatt MB18U vs MBTX20U and MBTX20UHD: differences

The real differences between the MB18U and the closest Motobatt models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Motobatt MB18U (this one) | 22.5 Ah | 280 A | 180 × 90 × 162 | 6.8 kg |
| Motobatt MBTX20U | 21 Ah | 310 A | 175 × 87 × 155 | 6.5 kg |
| Motobatt MBTX20UHD | 21 Ah | 310 A | 175 × 87 × 155 | 6.5 kg |

- Motobatt MBTX20U: 1.5 Ah less, 30 A more cranking power, a different case (175 × 87 × 155 mm).
- Motobatt MBTX20UHD: 1.5 Ah less, 30 A more cranking power, a different case (175 × 87 × 155 mm).

## Check this before ordering the Motobatt MB18U

- Cold cranking: 280 A (EN), equal to or higher than the original.
- Your current battery should say about 22.5 Ah; a little more is also fine.
- Measure the space: the MB18U takes up 180 × 90 × 162 mm.

## Frequently asked questions about the Motobatt MB18U

### MB18U or MBTX20U: which one suits me?

Compared with the MB18U, the Motobatt MBTX20U has 1.5 Ah less and 30 A more cranking power. If your current battery says 310 A or more, choose the MBTX20U; if it says 280 A or less, the MB18U is enough. Mind the space: the MBTX20U measures 175 × 87 × 155 mm.

### How much does the Motobatt MB18U weigh?

6.8 kg, with 22.5 Ah of capacity. For reference, the Motobatt MBTX20U (21 Ah) weighs 6.5 kg.

### How do I stop the motorcycle battery going flat in winter?

Connect it to a maintenance charger or disconnect it if the bike will sit for more than a month. A flat motorcycle battery sulphates in a few weeks.

## What it means that the MB18U is AGM

Inside, the MB18U has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## Other options if you are unsure about the MB18U

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Motobatt catalogue](https://bateriasonline.es/en/motobatt-batteries)
- [Varta YTX24HL-BS](https://bateriasonline.es/en/varta-ytx24hl-bs-521908034) · 21 Ah, 340 A, 205×90×164 mm

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