# Long 75D31R · Car battery 12V 70Ah

![Long 75D31R · Car battery 12V 70Ah](https://bateriasonline.es/985-home_default/long-75d31r.jpg)

> Long 75D31R: 70 Ah car battery, 305×173×225 mm, D31 case. 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-75d31r
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-75D31R
- **MPN**: 75D31R
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | Starting Series |
| Application | Cars |
| Voltage | 12 V |
| Capacity | 70 Ah |
| Length | 305 mm |
| Width | 173 mm |
| Height | 225 mm |
| Weight | 16.3 kg |
| Case size | D31 (306 × 173 × 225 mm) |

## Quick description

Long 75D31R: car battery with 12 V and 70 Ah, case size D31 (305 × 173 × 225 mm).

## Description

## Who the Long 75D31R is for

The Long 75D31R 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. If your car has no Start-Stop and had a 70 Ah battery, the 75D31R is a direct replacement.
At 70 Ah it is the usual size for compact diesels and mid-size petrol saloons. The 75D31R belongs to the Long Starting Series range. [The full range of Long batteries](https://bateriasonline.es/en/long-batteries)

## Long 75D31R vs 65D31L and 65D31R: which one to choose?

What sets the 75D31R apart from its neighbours in the Long range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Long 75D31R (this one) | 70 Ah | 305 × 173 × 225 | 16.3 kg |
| Long 65D31L | 75 Ah | 302 × 171 × 225 | 12.5 kg |
| Long 65D31R | 75 Ah | 302 × 171 × 225 | 12.5 kg |

- Long 65D31L: 5 Ah more, a different case (302 × 171 × 225 mm).
- Long 65D31R: 5 Ah more, a different case (302 × 171 × 225 mm).

## Part numbers and codes for the Long 75D31R

The 75D31R is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | 75D31R |
|---|---|
| Case size (EN) | D31 |
| Not to be confused with | Long 65D31R (75 Ah), Long 95D31R (80 Ah) |

## Equivalents and alternatives to the Long 75D31R

We have no other battery with exactly the dimensions and polarity of the 75D31R. Browse the rest of our [car batteries](https://bateriasonline.es/en/car-batteries) to compare close options.

## Check this before ordering the Long 75D31R

- Measure the space: the 75D31R takes up 305 × 173 × 225 mm (European case size D31).
- With 70 Ah, the 75D31R replaces an original battery of that capacity or slightly less.

## Frequently asked questions about the Long 75D31R

### 75D31R or 65D31L: which one suits me?

Compared with the 75D31R, the Long 65D31L has 5 Ah more. With 75 Ah, the 65D31L runs longer between charges than the 75D31R (70 Ah). Mind the space: the 65D31L measures 302 × 171 × 225 mm.

### How much does the Long 75D31R weigh?

16.3 kg, with 70 Ah of capacity. For reference, the Long 65D31L (75 Ah) weighs 12.5 kg.

### What case size is the Long 75D31R?

Case size D31: 305 × 173 × 225 mm. The 75D31R fits any standard D31 battery tray.

## Keep comparing: alternatives to the 75D31R

- [More car batteries](https://bateriasonline.es/en/car-batteries)
- [The whole Long range](https://bateriasonline.es/en/long-batteries)

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