# Truck battery Tudor TG1206 12V 120Ah 680A

![Truck battery Tudor TG1206 12V 120Ah 680A](https://baterias.com/3486-home_default/battery-tudor-tg1206-12v-120ah-680a.jpg)

> Tudor TG1206 truck battery 12V 120Ah 680A. START PRO (HD) range. Dimensions 510×175×225 mm, + terminal on the right. For heavy-duty fleets.

**Category:** [Truck Batteries](https://baterias.com/gb/batteries-for-truck) → [TUDOR](https://baterias.com/gb/tudor)

- **Canonical URL**: https://baterias.com/gb/battery-tudor-tg1206-12v-120ah-680a
- **Language**: en-GB
- **Brand**: TUDOR
- **Reference**: BCOM-TUDOR-TG1206
- **EAN**: 3661024056830
- **MPN**: TG1206
- **Last updated**: 2026-10-04
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | TUDOR |
| Reference | TG1206 |
| Model | TUDOR START PRO (HD) |
| Voltage (V) | 12 V |
| Largo | 510 mm |
| Ancho | 175 mm |
| Alto | 225 mm |
| Peso | 31.8 kg |
| Tecnología | Flooded |
| EAN | 3661024056830 |
| Terminal layout | Positive terminal on the right |
| Terminal type | EN taper post |
| Hold down | B3 |
| Cold cranking amps (EN) | 680 A |
| Capacity (C20) | 120 Ah (c20) |
| Case type | D08 |

## Quick description

**Tudor TG1206 12V 120Ah 680A** is a professional battery for heavy commercial vehicles. Withstands constant chassis vibration, supports long cold-engine cranks and keeps auxiliary services running (tachograph, heater, refrigeration, GPS) during driver's mandatory rest stops.

## Why this truck battery?

- **True Heavy Duty** built for intensive professional use
- **Long cold-diesel cranks** reliable even in extreme cold
- **Powers services at idle** tachograph, heater and lights with engine off

🔌 Voltage
12 V

⚡ Capacity
120 Ah C20

🔋 Cold cranking
680 A EN-1

📏 Dimensions
510×175×225 mm

⚙️ Technology
Lead-acid

🧭 Polarity
Positive on the right

⚖️ Weight
31,8 kg

🏷️ Model
TUDOR START PRO (HD)

## Description

## Truck battery Tudor TG1206 Start PRO (Hd) 120Ah 680A 12V

12*V* Voltage
120*Ah* Capacity
680*A* Cold cranking
31.80*kg* Weight

With **120 Ah** and **680 A** of cold cranking current (EN), the **Tudor TG1206** from the **Start PRO (Hd)** range is built for professional use in trucks, buses, tractors and heavy machinery. It measures 510 × 175 × 225 mm and the positive terminal on the right, the format sought by anyone replacing a 120 Ah battery in trucks.
- Heavy Duty construction for intensive professional use.
- Conventional lead-acid: the most proven and economical technology.
- Designed for 24 V installations with two batteries in series.
- Powerful cold cranking for large-displacement diesel engines.

### What the Tudor TG1206 is for

With 120 Ah, the Tudor TG1206 cranks large-displacement diesel engines in the cold and powers tachograph, fridge and heater during rest stops. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 31.80 kg, EN taper post terminals and B3 hold-down.

### Dimensions, polarity and mounting

The Tudor TG1206 is made in the 510 × 175 × 225 mm format and weighs 31.80 kg. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a B3 hold-down and EN taper post terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.

### What Tudor does differently

Tudor has made batteries in Spain for more than a century and remains one of the brands most trusted by Spanish workshops for reliability and value. All the Tudor batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

### The Tudor TG1206: Start PRO (Hd) range and conventional lead-acid technology

The **Start PRO (Hd)** is the Tudor range the TG1206 belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle.
Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour.

### How to make it last longer

Keep the terminals clean and tight and the battery firmly secured against chassis vibration. During rest stops with active loads, avoid repeated deep discharges: they shorten the life of any starter battery.

### Manufacturer's warranty

The Tudor TG1206 comes with the **manufacturer's official warranty** against manufacturing defects. An important note for commercial vehicles: most trucks use **two batteries connected in series** (24 V installation). If you replace only one, the new battery works alongside the old one, which has already lost capacity; that imbalance shortens its life and the manufacturer may treat it as misuse. Always replace **both at the same time**.

### Shipping, delivery and returns

Same-day dispatch from our warehouse for in-stock orders placed **before 6:00 pm**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **14 days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.

## Frequently asked questions

### How is the Tudor TG1206 battery installed in the vehicle?

In most trucks it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — with positive on the right match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On trucks with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

### How long does the Tudor TG1206 battery last?

Expected lifespan of the Tudor TG1206 is 4 to 7 years in regular use (depends on technology and climate). In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.

### What are the measurements of the TG1206 model?

Dimensions (length × width × height) are 510×175×225 mm — also written as 510x175x225 mm — following the European DIN standard. Always measure the space in your truck before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.

### What polarity does the Tudor TG1206 battery have?

Polarity: positive on the right. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.

### Will the Tudor TG1206 battery fit my truck?

Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The TG1206 typically fits a wide range of European vehicles thanks to its standard DIN case format.

### Which batteries are equivalent to the Tudor TG1206?

Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop trucks. See the "Equivalents" section to view recommended options at the same performance level.


## Equivalent batteries

- [TUDOR TG1406](https://baterias.com/gb/battery-tudor-tg1406-140ah-800a)
- [EXIDE EG1406](https://baterias.com/gb/battery-exide-eg1406-12v-140ah-800a)

## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-10-28*