# Motobatt MT4R · Motorcycle battery 12V 2.5Ah 45A

![Motobatt MT4R · Motorcycle battery 12V 2.5Ah 45A](https://bateriasonline.es/3363-home_default/motobatt-mt4r.jpg)

> Motobatt MT4R: 2.5 Ah motorcycle battery, 45 A (EN), 114×49×86 mm, AGM. Equivalent to Fulbat FTR4A-BS.

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

- **Canonical URL**: https://bateriasonline.es/en/motobatt-mt4r
- **Language**: en
- **Brand**: Motobatt
- **Reference**: BOL-MOTOBATT-MT4R
- **MPN**: MT4R
- **Price**: 77,22 € (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 | 2.5 Ah |
| Cold cranking amps (EN) | 45 A |
| Length | 114 mm |
| Width | 49 mm |
| Height | 86 mm |
| Weight | 1.15 kg |
| JIS code | YTR4 ABS |

## Quick description

Motobatt MT4R: motorcycle battery (AGM) with 12 V, 2.5 Ah and 45 A cold cranking current, measuring 114 × 49 × 86 mm.

## Description

## Where the Motobatt MT4R fits

The Motobatt MT4R is made for motorcycles, scooters and quads. With 2.5 Ah, the MT4R suits motorcycles and scooters that had a battery of that capacity.
At 2.5 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The MT4R 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 MT4R

Other AGM batteries that fit the MT4R's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Fulbat FTR4A-BS | AGM | 2.4 Ah | 45 A | 113 × 48 × 85 |

## Motobatt MT4R vs MBT4BB: which one to choose?

The real differences between the MT4R and the closest Motobatt models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Motobatt MT4R (this one) | 2.5 Ah | 45 A | 114 × 49 × 86 | 1.15 kg |
| Motobatt MBT4BB | 2.5 Ah | 40 A | 113 × 38 × 87 | 1.05 kg |

- Motobatt MBT4BB: the same capacity, 5 A less cranking power, a different case (113 × 38 × 87 mm).

## What to look at before buying the MT4R

- Measure the space: the MT4R takes up 114 × 49 × 86 mm.
- Capacity of the MT4R: 2.5 Ah; the same as your current battery or slightly more is fine.
- The MT4R delivers 45 A cold cranking (EN standard); do not go below what your original battery states.

## Frequently asked questions about the Motobatt MT4R

### MT4R or MBT4BB: which one suits me?

Compared with the MT4R, the Motobatt MBT4BB has 5 A less cranking power. The MT4R cranks harder; the MBT4BB is only a good option if your original battery says 40 A or less. Mind the space: the MBT4BB measures 113 × 38 × 87 mm.

### How much does the Motobatt MT4R weigh?

1.15 kg, with 2.5 Ah of capacity. For reference, the Motobatt MBT4BB (2.5 Ah) weighs 1.05 kg.

### Which battery is equivalent to the Motobatt MT4R?

Only other AGM batteries with its dimensions and polarity: Fulbat FTR4A-BS. Neither an EFB nor a conventional battery replaces the MT4R.

## What it means that the MT4R is AGM

Inside, the MT4R 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 MT4R

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Motobatt catalogue](https://bateriasonline.es/en/motobatt-batteries)
- [Varta YTR4A-BS](https://bateriasonline.es/en/varta-ytr4a-bs-502903003) · 2.3 Ah, 30 A, 114×49×86 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*