# Deta DF1251 · Truck battery 12V 125Ah 850A

![Deta DF1251 · Truck battery 12V 125Ah 850A](https://bateriasonline.es/2886-home_default/deta-df1251.jpg)

> Deta DF1251: 125 Ah truck battery, 850 A (EN), 349×175×285 mm, positive terminal on the left. Equivalent to Exide EF1251 and Tudor TF1251.

**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-df1251
- **Language**: en
- **Brand**: Deta
- **Reference**: BOL-DETA-DF1251
- **EAN**: 3661024027175
- **MPN**: DF1251
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Deta |
| Range | DETA Power Pro (HDX) |
| Application | Trucks and commercial vehicles |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 125 Ah |
| Cold cranking amps (EN) | 850 A |
| Length | 349 mm |
| Width | 175 mm |
| Height | 285 mm |
| Weight | 31 kg |
| Polarity | Positive terminal on the left |

## Quick description

Deta DF1251: truck battery with 12 V, 125 Ah and 850 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 DF1250.

## Description

## Who the Deta DF1251 is for

The Deta DF1251 turns heavy diesel engines and powers cabs with high consumption. It is built to resist constant vibration and long shifts.
The DF1251 belongs to the Deta DETA Power Pro (HDX) range. [More Deta batteries](https://bateriasonline.es/en/deta-batteries)

## What it means that the DF1251 is lead-acid

Inside, the DF1251 is classic lead-acid: liquid electrolyte and lead plates. If the DF1251 is left discharged for weeks it sulphates: a maintenance charger prevents this.

## Deta DF1251 vs DG1251, DF1250 and DG1101: which one to choose?

What sets the DF1251 apart from its neighbours in the Deta range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Deta DF1251 (this one) | 125 Ah | 850 A | 349 × 175 × 285 | left | 31 kg |
| Deta DG1251 | 125 Ah | 760 A | 349 × 175 × 285 | left | 29.5 kg |
| Deta DF1250 | 125 Ah | 850 A | 349 × 175 × 285 | right | 31 kg |
| Deta DG1101 | 110 Ah | 750 A | 349 × 175 × 235 | left | 25.4 kg |

- Deta DG1251: the same capacity, 90 A less cranking power, the same dimensions.
- The Deta DF1250 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, 100 A less cranking power, a different case (349 × 175 × 235 mm).

## Equivalents and alternatives to the Deta DF1251

Batteries that fit the DF1251's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the DF1251.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EF1251 | Lead-acid | 125 Ah | 850 A | 349 × 175 × 285 |
| Tudor TF1251 | Lead-acid | 125 Ah | 850 A | 349 × 175 × 285 |
| Fulmen FF1251 | Lead-acid | 125 Ah | 850 A | 349 × 175 × 285 |

## Part numbers and codes for the Deta DF1251

This is how the Deta DF1251 appears on the label and in parts catalogues:

| Commercial reference | DF1251 |
|---|---|
| EAN | 3661024027175 |
| Not to be confused with | Deta DF1250 (125 Ah, 850 A, positive terminal on the right), Deta DG1251 (125 Ah, 760 A) |

## Before ordering the DF1251, check this

- The DF1251 delivers 850 A cold cranking (EN standard); do not go below what your original battery states.
- Capacity of the DF1251: 125 Ah; the same as your current battery or slightly more is fine.
- The DF1251 has the positive terminal on the left: compare it with your current battery.
- Measure the space: the DF1251 takes up 349 × 175 × 285 mm.

## Frequently asked questions about the Deta DF1251

### DF1251 or DG1251: which one suits me?

Compared with the DF1251, the Deta DG1251 has 90 A less cranking power. The DF1251 cranks harder; the DG1251 is only a good option if your original battery says 760 A or less. Both measure 349 × 175 × 285 mm, so they fit the same tray.

### Deta DF1251 or DF1250: what is the difference?

Only the polarity: the DF1251 has the positive terminal on the left and the DF1250 the positive terminal on the right. Capacity (125 Ah), cranking power and dimensions are identical.

### How much does the Deta DF1251 weigh?

31 kg, with 125 Ah of capacity. For reference, the Deta DG1251 (125 Ah) weighs 29.5 kg.

### Which battery is equivalent to the Deta DF1251?

With the same dimensions, polarity and similar capacity you have the Exide EF1251, Tudor TF1251 and Fulmen FF1251. As the DF1251 is a conventional battery, an EFB or AGM of the same size also works.

## Keep comparing: alternatives to the DF1251

- [More truck, commercial and agricultural vehicle batteries](https://bateriasonline.es/en/truck-agricultural-batteries)
- [More Deta models](https://bateriasonline.es/en/deta-batteries)
- [Exide EF1251](https://bateriasonline.es/en/exide-ef1251) · 125 Ah, 850 A, 349×175×285 mm
- [Tudor TF1251](https://bateriasonline.es/en/tudor-tf1251) · 125 Ah, 850 A, 349×175×285 mm

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