# Long 46B24R-MF · Car battery 12V 45Ah

![Long 46B24R-MF · Car battery 12V 45Ah](https://bateriasonline.es/931-home_default/long-46b24r-mf.jpg)

> Long 46B24R-MF: 45 Ah car battery, 236×127×225 mm, B24 case. Equivalent to Exide EA456 and Exide EB454. Ask for a no-obligation quote.

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

- **Canonical URL**: https://bateriasonline.es/en/long-46b24r-mf
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-46B24R-MF
- **MPN**: 46B24R-MF
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | Starting Series |
| Application | Cars |
| Voltage | 12 V |
| Capacity | 45 Ah |
| Length | 236 mm |
| Width | 127 mm |
| Height | 225 mm |
| Weight | 9 kg |
| Case size | B24 (238 × 129 × 227 mm) |

## Quick description

Long 46B24R-MF: car battery with 12 V and 45 Ah, case size B24 (236 × 127 × 225 mm).

## Description

## Who the Long 46B24R-MF is for

The Long 46B24R-MF is made for petrol and diesel cars without automatic engine stop. Its job is to start the engine in the cold with margin to spare and keep the car's electronics powered.
At 45 Ah it is a small size: the usual choice for petrol superminis and city cars with little equipment. The 46B24R-MF belongs to the Long Starting Series range. [The full range of Long batteries](https://bateriasonline.es/en/long-batteries)

## Long 46B24R-MF vs 36B20L and 36B20R: which one to choose?

The real differences between the 46B24R-MF and the closest Long models:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Long 46B24R-MF (this one) | 45 Ah | 236 × 127 × 225 | 9 kg |
| Long 36B20L | 40 Ah | 197 × 129 × 227 | 7.8 kg |
| Long 36B20R | 40 Ah | 197 × 129 × 227 | 7.8 kg |

- Long 36B20L: 5 Ah less, a different case (197 × 129 × 227 mm).
- Long 36B20R: 5 Ah less, a different case (197 × 129 × 227 mm).

## Long 46B24R-MF codes and part numbers

This is how the Long 46B24R-MF appears on the label and in parts catalogues:

| Commercial reference | 46B24R-MF |
|---|---|
| Case size (EN) | B24 |

## Equivalents and alternatives to the Long 46B24R-MF

These batteries share voltage, dimensions and polarity with the 46B24R-MF, with similar capacity: compare cranking power, technology and price before deciding.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Varta A11 | AGM | 45 Ah | 236 × 126 × 224 |
| Exide EA456 | Lead-acid | 45 Ah | 237 × 127 × 227 |
| Exide EB454 | Lead-acid | 45 Ah | 237 × 127 × 227 |
| Exide EB455 | Lead-acid | 45 Ah | 237 × 127 × 227 |
| Exide EB456 | Lead-acid | 45 Ah | 237 × 127 × 227 |
| Exide EB457 | Lead-acid | 45 Ah | 237 × 127 × 227 |

## Check this before ordering the Long 46B24R-MF

- Length, width and height of the 46B24R-MF: 236 × 127 × 225 mm (European case size B24).
- With 45 Ah, the 46B24R-MF replaces an original battery of that capacity or slightly less.

## Frequently asked questions about the Long 46B24R-MF

### Long 46B24R-MF or 36B20L?

Compared with the 46B24R-MF, the Long 36B20L has 5 Ah less. With 45 Ah, the 46B24R-MF runs longer between charges than the 36B20L (40 Ah). Mind the space: the 36B20L measures 197 × 129 × 227 mm.

### How much does the Long 46B24R-MF weigh?

The 46B24R-MF weighs 9 kg. For reference, the Long 36B20L (40 Ah) weighs 7.8 kg.

### Which battery is equivalent to the Long 46B24R-MF?

With the same dimensions and polarity as the 46B24R-MF you have the Varta A11, Exide EA456 and Exide EB454; choose by cold cranking power, technology and price.

### What case size is the Long 46B24R-MF?

Case size B24: 236 × 127 × 225 mm. The 46B24R-MF fits any standard B24 battery tray such as the Varta A11.

## More batteries to compare with the 46B24R-MF

- [Other car batteries](https://bateriasonline.es/en/car-batteries)
- [The whole Long range](https://bateriasonline.es/en/long-batteries)
- [Long 46B24R(S)-MF](https://bateriasonline.es/en/long-46b24r-s-mf) · 45 Ah, 236×127×225 mm

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