# Deta DG1251 · Truck battery 12V 125Ah 760A

![Deta DG1251 · Truck battery 12V 125Ah 760A](https://bateriasonline.es/2952-home_default/deta-dg1251.jpg)

> Deta DG1251: 125 Ah truck battery, 760 A (EN), 349×175×285 mm, positive terminal on the left. Equivalent to Exide EG1251 and Exide EF1251.

**Category:** [Truck, commercial and agricultural vehicle batteries](https://bateriasonline.es/en/truck-agricultural-batteries) → [Deta](https://bateriasonline.es/en/deta-batteries)

- **Canonical URL**: https://bateriasonline.es/en/deta-dg1251
- **Language**: en
- **Brand**: Deta
- **Reference**: BOL-DETA-DG1251
- **EAN**: 3661024025416
- **MPN**: DG1251
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Deta |
| Range | DETA StartPRO |
| Application | Trucks and commercial vehicles |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 125 Ah |
| Cold cranking amps (EN) | 760 A |
| Length | 349 mm |
| Width | 175 mm |
| Height | 285 mm |
| Weight | 29.5 kg |
| Polarity | Positive terminal on the left |

## Quick description

Deta DG1251: truck battery with 12 V, 125 Ah and 760 A cold cranking current, measuring 349 × 175 × 285 mm, with the positive terminal on the left. Need the positive terminal on the right? The same battery is the Deta DG1250.

## Description

## The Deta DG1251 at a glance

The Deta DG1251 is a starter battery for trucks, tractors and machinery: high capacity, robust terminals and a build that withstands vibration and the starts of large engines. It is built to resist constant vibration and long shifts.
The DG1251 belongs to the Deta DETA StartPRO range. [See all Deta batteries](https://bateriasonline.es/en/deta-batteries)

## Equivalents and alternatives to the Deta DG1251

Same dimensions and polarity as the DG1251, with similar capacity and cranking power; as a conventional battery, the DG1251 can also be replaced by an EFB or AGM of the same size if you want more cycles.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EG1251 | Lead-acid | 125 Ah | 760 A | 349 × 175 × 285 |
| Tudor TG1251 | Lead-acid | 125 Ah | 760 A | 349 × 175 × 285 |
| Fulmen FG1251 | Lead-acid | 125 Ah | 760 A | 349 × 175 × 285 |
| Varta J2 | Lead-acid | 125 Ah | 720 A | 349 × 175 × 285 |
| Exide EF1251 | Lead-acid | 125 Ah | 850 A | 349 × 175 × 285 |
| Tudor TF1251 | Lead-acid | 125 Ah | 850 A | 349 × 175 × 285 |

## Deta DG1251 vs DF1251, DG1250 and DG1101: which one to choose?

The real differences between the DG1251 and the closest Deta models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Deta DG1251 (this one) | 125 Ah | 760 A | 349 × 175 × 285 | left | 29.5 kg |
| Deta DF1251 | 125 Ah | 850 A | 349 × 175 × 285 | left | 31 kg |
| Deta DG1250 | 125 Ah | 760 A | 349 × 175 × 285 | right | 29.5 kg |
| Deta DG1101 | 110 Ah | 750 A | 349 × 175 × 235 | left | 25.4 kg |

- Deta DF1251: the same capacity, 90 A more cranking power, the same dimensions.
- The Deta DG1250 is the same battery with the positive terminal on the other side: choose it if your current battery has the positive terminal on the right.
- Deta DG1101: 15 Ah less, 10 A less cranking power, a different case (349 × 175 × 235 mm).

## Lead-acid technology in the DG1251

The DG1251 is a conventional lead-acid battery, with plates immersed in liquid electrolyte. Avoid leaving them discharged, as they sulphate, and charge them with a charger that cuts off or switches to maintenance when finished.

## Check this before ordering the Deta DG1251

- The DG1251 needs 349 × 175 × 285 mm of space: measure it with the hold-down clamp in place.
- The DG1251 has the positive terminal on the left: compare it with your current battery.
- Your current battery should say about 125 Ah; a little more is also fine.
- The DG1251 delivers 760 A cold cranking (EN standard); do not go below what your original battery states.

## Deta DG1251 codes and part numbers

The DG1251 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | DG1251 |
|---|---|
| EAN | 3661024025416 |
| Not to be confused with | Deta DF1251 (125 Ah, 850 A), Deta DG1250 (125 Ah, 760 A, positive terminal on the right) |

## Frequently asked questions about the Deta DG1251

### Deta DG1251 or DF1251?

Compared with the DG1251, the Deta DF1251 has 90 A more cranking power. If your current battery says 850 A or more, choose the DF1251; if it says 760 A or less, the DG1251 is enough. Both measure 349 × 175 × 285 mm, so they fit the same tray.

### What is the difference between the Deta DG1251 and the DG1250?

They are the same battery with the terminals swapped: positive terminal on the left on the DG1251, positive terminal on the right on the DG1250. Look at your current battery with the terminals facing you and pick the one that matches.

### How much does the Deta DG1251 weigh?

The DG1251 weighs 29.5 kg. For reference, the Deta DF1251 (125 Ah) weighs 31 kg.

### Which battery is equivalent to the Deta DG1251?

With the same dimensions, polarity and similar capacity you have the Exide EG1251, Tudor TG1251 and Fulmen FG1251. As the DG1251 is a conventional battery, an EFB or AGM of the same size also works.

### Are truck batteries fitted in pairs?

Almost always, in series for 24 V. Replace them in matched pairs: mixing a new one with an old one unbalances charging and shortens the new one's life.

## Keep comparing: alternatives to the DG1251

- [All truck, commercial and agricultural vehicle batteries](https://bateriasonline.es/en/truck-agricultural-batteries)
- [The whole Deta range](https://bateriasonline.es/en/deta-batteries)
- [Exide EG1251](https://bateriasonline.es/en/exide-eg1251) · 125 Ah, 760 A, 349×175×285 mm
- [Tudor TG1251](https://bateriasonline.es/en/tudor-tg1251) · 125 Ah, 760 A, 349×175×285 mm

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