# Motobatt MB51814 · Motorcycle battery 12V 22Ah 220A

![Motobatt MB51814 · Motorcycle battery 12V 22Ah 220A](https://bateriasonline.es/3147-home_default/motobatt-mb51814.jpg)

> Motobatt MB51814: 22 Ah motorcycle battery, 220 A (EN), 186×82×171 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-mb51814
- **Language**: en
- **Brand**: Motobatt
- **Reference**: BOL-MOTOBATT-MB51814
- **MPN**: MB51814
- **Price**: 189,54 € (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 | 22 Ah |
| Cold cranking amps (EN) | 220 A |
| Length | 186 mm |
| Width | 82 mm |
| Height | 171 mm |
| Weight | 6.75 kg |
| JIS code | 51814 51913 |

## Quick description

Motobatt MB51814: motorcycle battery (AGM) with 12 V, 22 Ah and 220 A cold cranking current, measuring 186 × 82 × 171 mm.

## Description

## Where the Motobatt MB51814 fits

The Motobatt MB51814 is made for motorcycles, scooters and quads. It is worth keeping the MB51814 on a maintenance charger if the bike is laid up over winter.
At 22 Ah it is a large battery for heavy motorcycles, jet skis and utility quads. The MB51814 belongs to the Motobatt MOTOBATT QUADFLEX range. [The full range of Motobatt batteries](https://bateriasonline.es/en/motobatt-batteries)

## Equivalents and alternatives to the Motobatt MB51814

No other reference in the catalogue fully matches the dimensions and polarity of the MB51814; you will find the closest ones among our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries).

## Motobatt MB51814 vs MB18U and MBTX20U: differences

The real differences between the MB51814 and the closest Motobatt models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Motobatt MB51814 (this one) | 22 Ah | 220 A | 186 × 82 × 171 | 6.75 kg |
| Motobatt MB18U | 22.5 Ah | 280 A | 180 × 90 × 162 | 6.8 kg |
| Motobatt MBTX20U | 21 Ah | 310 A | 175 × 87 × 155 | 6.5 kg |

- Motobatt MB18U: 0.5 Ah more, 60 A more cranking power, a different case (180 × 90 × 162 mm).
- Motobatt MBTX20U: 1 Ah less, 90 A more cranking power, a different case (175 × 87 × 155 mm).

## Check this before ordering the Motobatt MB51814

- Check the EN amps on your battery: if it says 220 A or less, the MB51814 covers your engine.
- Capacity of the MB51814: 22 Ah; the same as your current battery or slightly more is fine.
- Length, width and height of the MB51814: 186 × 82 × 171 mm.

## Frequently asked questions about the Motobatt MB51814

### Motobatt MB51814 or MB18U?

Compared with the MB51814, the Motobatt MB18U has 0.5 Ah more and 60 A more cranking power. If your current battery says 280 A or more, choose the MB18U; if it says 220 A or less, the MB51814 is enough. Mind the space: the MB18U measures 180 × 90 × 162 mm.

### How much does the Motobatt MB51814 weigh?

The MB51814 weighs 6.75 kg. For reference, the Motobatt MB18U (22.5 Ah) weighs 6.8 kg.

### Which charger does the Motobatt MB51814 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 MB51814

Inside, the MB51814 has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## More batteries to compare with the MB51814

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