# Long 55D23R-MF · Car battery 12V 55Ah

![Long 55D23R-MF · Car battery 12V 55Ah](https://bateriasonline.es/956-home_default/long-55d23r-mf.jpg)

> Long 55D23R-MF: 55 Ah car battery, 232×171×225 mm, D23 case. Equivalent to Long 55D23L-MF and Long 55D23L. Price on request: ask for a free quote.

**Category:** [Car batteries](https://bateriasonline.es/en/car-batteries) → [Long](https://bateriasonline.es/en/long-batteries)

- **Canonical URL**: https://bateriasonline.es/en/long-55d23r-mf
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-55D23R-MF
- **MPN**: 55D23R-MF
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | Starting Series |
| Application | Cars |
| Voltage | 12 V |
| Capacity | 55 Ah |
| Length | 232 mm |
| Width | 171 mm |
| Height | 225 mm |
| Weight | 12.5 kg |
| Case size | D23 (232 × 173 × 225 mm) |

## Quick description

Long 55D23R-MF: car battery with 12 V and 55 Ah, case size D23 (232 × 171 × 225 mm).

## Description

## The Long 55D23R-MF at a glance

The Long 55D23R-MF is a starter battery for cars without Start-Stop: it delivers the current the starter motor needs and then powers lights, control units and audio with the engine off. Its job is to start the engine in the cold with margin to spare and keep the car's electronics powered.
At 55 Ah it covers petrol compacts and small diesels, the best-selling format in Europe. The 55D23R-MF belongs to the Long Starting Series range. [More Long batteries](https://bateriasonline.es/en/long-batteries)

## Part numbers and codes for the Long 55D23R-MF

Look for any of these 55D23R-MF codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | 55D23R-MF |
|---|---|
| Case size (EN) | D23 |
| Not to be confused with | Long 75D23R-MF (65 Ah) |

## Long 55D23R-MF vs 75D23L and 75D23L-MF: differences

The real differences between the 55D23R-MF and the closest Long models:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Long 55D23R-MF (this one) | 55 Ah | 232 × 171 × 225 | 12.5 kg |
| Long 75D23L | 65 Ah | 232 × 173 × 225 | 12.6 kg |
| Long 75D23L-MF | 65 Ah | 232 × 173 × 225 | 15.8 kg |

- Long 75D23L: 10 Ah more, the same D23 case.
- Long 75D23L-MF: 10 Ah more, the same D23 case.

## Equivalents and alternatives to the Long 55D23R-MF

These batteries share voltage, dimensions and polarity with the 55D23R-MF, with similar capacity: compare cranking power, technology and price before deciding.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Long 55D23L-MF | | 55 Ah | 232 × 171 × 225 |
| Long 55D23L | | 55 Ah | 232 × 173 × 225 |
| Long 55D23R | | 55 Ah | 232 × 173 × 225 |

## Before ordering the 55D23R-MF, check this

- Your current battery should say about 55 Ah; a little more is also fine.
- Length, width and height of the 55D23R-MF: 232 × 171 × 225 mm (European case size D23).

## Frequently asked questions about the Long 55D23R-MF

### 55D23R-MF or 75D23L: which one suits me?

Compared with the 55D23R-MF, the Long 75D23L has 10 Ah more. With 65 Ah, the 75D23L runs longer between charges than the 55D23R-MF (55 Ah). Both measure 232 × 171 × 225 mm, so they fit the same tray.

### How much does the Long 55D23R-MF weigh?

12.5 kg, with 55 Ah of capacity. For reference, the Long 75D23L (65 Ah) weighs 12.6 kg.

### Which battery is equivalent to the Long 55D23R-MF?

With the same dimensions and polarity as the 55D23R-MF you have the Long 55D23L-MF, Long 55D23L and Long 55D23R; choose by cold cranking power, technology and price.

### What case size is the Long 55D23R-MF?

Case size D23: 232 × 171 × 225 mm. The 55D23R-MF fits any standard D23 battery tray such as the Long 55D23L-MF.

## Keep comparing: alternatives to the 55D23R-MF

- [All car batteries](https://bateriasonline.es/en/car-batteries)
- [The whole Long range](https://bateriasonline.es/en/long-batteries)
- [Long 55D23L-MF](https://bateriasonline.es/en/long-55d23l-mf) · 55 Ah, 232×171×225 mm
- [Long 55D23L](https://bateriasonline.es/en/long-55d23l) · 55 Ah, 232×173×225 mm

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