# Tudor TG1251 · Truck battery 12V 125Ah 760A

![Tudor TG1251 · Truck battery 12V 125Ah 760A](https://bateriasonline.es/2509-home_default/tudor-tg1251.jpg)

> Tudor TG1251: 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) → [Tudor](https://bateriasonline.es/en/tudor-batteries)

- **Canonical URL**: https://bateriasonline.es/en/tudor-tg1251
- **Language**: en
- **Brand**: Tudor
- **Reference**: BOL-TUDOR-TG1251
- **EAN**: 3661024055413
- **MPN**: TG1251
- **Price**: 133,48 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Tudor |
| Range | TUDOR START PRO (HD) |
| 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

Tudor TG1251: 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. With the positive terminal on the right, the exact counterpart is the Tudor TG1250.

## Description

## Who the Tudor TG1251 is for

The Tudor TG1251 turns heavy diesel engines and powers cabs with high consumption. It is built to resist constant vibration and long shifts.
The TG1251 belongs to the Tudor TUDOR START PRO (HD) range. [More Tudor batteries](https://bateriasonline.es/en/tudor-batteries)

## Equivalents and alternatives to the Tudor TG1251

Batteries that fit the TG1251's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the TG1251.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EG1251 | Lead-acid | 125 Ah | 760 A | 349 × 175 × 285 |
| Fulmen FG1251 | Lead-acid | 125 Ah | 760 A | 349 × 175 × 285 |
| Deta DG1251 | 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 |
| Fulmen FF1251 | Lead-acid | 125 Ah | 850 A | 349 × 175 × 285 |

## Tudor TG1251 vs TF1251, TG1250 and TF1421: which one to choose?

The real differences between the TG1251 and the closest Tudor models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Tudor TG1251 (this one) | 125 Ah | 760 A | 349 × 175 × 285 | left | 29.5 kg |
| Tudor TF1251 | 125 Ah | 850 A | 349 × 175 × 285 | left | 31 kg |
| Tudor TG1250 | 125 Ah | 760 A | 349 × 175 × 285 | right | 29.5 kg |
| Tudor TF1421 | 142 Ah | 850 A | 345 × 175 × 290 | left | 35.1 kg |

- Tudor TF1251: the same capacity, 90 A more cranking power, the same dimensions.
- If the positive terminal of your battery is on the other side, the one you need is the Tudor TG1250 (positive terminal on the right).
- Tudor TF1421: 17 Ah more, 90 A more cranking power, a different case (345 × 175 × 290 mm).

## Inside the TG1251: lead-acid technology

Inside, the TG1251 is classic lead-acid: liquid electrolyte and lead plates. If the TG1251 is left discharged for weeks it sulphates: a maintenance charger prevents this.

## Before ordering the TG1251, check this

- The TG1251 needs 349 × 175 × 285 mm of space: measure it with the hold-down clamp in place.
- With the terminals facing you, the positive terminal of the TG1251 is on the left.
- Capacity of the TG1251: 125 Ah; the same as your current battery or slightly more is fine.
- Check the EN amps on your battery: if it says 760 A or less, the TG1251 covers your engine.

## Part numbers and codes for the Tudor TG1251

This is how the Tudor TG1251 appears on the label and in parts catalogues:

| Commercial reference | TG1251 |
|---|---|
| EAN | 3661024055413 |
| Not to be confused with | Tudor TF1251 (125 Ah, 850 A), Tudor TG1250 (125 Ah, 760 A, positive terminal on the right) |

## Frequently asked questions about the Tudor TG1251

### TG1251 or TF1251: which one suits me?

Compared with the TG1251, the Tudor TF1251 has 90 A more cranking power. If your current battery says 850 A or more, choose the TF1251; if it says 760 A or less, the TG1251 is enough. Both measure 349 × 175 × 285 mm, so they fit the same tray.

### Tudor TG1251 or TG1250: what is the difference?

Only the polarity: the TG1251 has the positive terminal on the left and the TG1250 the positive terminal on the right. Capacity (125 Ah), cranking power and dimensions are identical.

### How much does the Tudor TG1251 weigh?

29.5 kg, with 125 Ah of capacity. For reference, the Tudor TF1251 (125 Ah) weighs 31 kg.

### Which battery is equivalent to the Tudor TG1251?

With the same dimensions, polarity and similar capacity you have the Exide EG1251, Fulmen FG1251 and Deta DG1251. As the TG1251 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.

## Other options if you are unsure about the TG1251

- [Other truck, commercial and agricultural vehicle batteries](https://bateriasonline.es/en/truck-agricultural-batteries)
- [More Tudor models](https://bateriasonline.es/en/tudor-batteries)
- [Exide EG1251](https://bateriasonline.es/en/exide-eg1251) · 125 Ah, 760 A, 349×175×285 mm
- [Fulmen FG1251](https://bateriasonline.es/en/fulmen-fg1251) · 125 Ah, 760 A, 349×175×285 mm

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