Selecting the correct battery for the Opel Signum produced between 2003 and 2008 is vital for reliable starting, proper functioning of the car’s electrical systems, and maximizing the lifespan of the vehicle’s power supply. This model, known for its practicality and comfort, comes with a range of engines, both petrol and diesel, and none of them were originally equipped with a Start-Stop system. This simplifies the battery selection process to conventional lead-acid types, but attention to detail—such as physical dimensions and electrical parameters—remains crucial for a perfect fit.
Across all engine variants, whether you drive a petrol version like the 1.8, 2.0 Turbo, or the more powerful 3.2 V6, or you own one of the renowned diesel units such as the 1.9 CDTI or the larger 3.0 V6 CDTI, the recommended battery technology is the standard lead-acid type. Advanced technologies like AGM or EFB are not required for these models due to the absence of Start-Stop systems; moreover, opting for a basic lead-acid battery not only ensures compatibility but also helps to keep costs reasonable.
One important and often overlooked detail for the Opel Signum from this generation is battery height. The Signum’s battery compartment is designed for a reduced height battery, specifically one with a maximum height of 175mm. This is a critical aspect to consider, as installing a battery that is too tall could lead to problems with fitting the battery cover or, even worse, cause the terminals to short against the hood or other components. For any replacement, always verify this measurement to avoid costly mistakes and to ensure the battery can be safely and securely mounted.
When considering the electrical requirements, petrol engines such as the 1.8 typically require a slightly smaller battery in terms of capacity, with a minimum of 60Ah and a maximum around 62Ah, while providing a cold cranking amperage (CCA) in the range of 540A to 600A. Diesel engines, as is common, demand more from their batteries due to higher compression ratios and the need for more robust starting current, so the recommended battery capacity rises to between 71Ah and 74Ah, with a CCA from 670A up to 750A. This applies to both the four-cylinder and the powerful six-cylinder diesels, ensuring ample starting power even in colder climates.
For owners seeking specific examples of compatible batteries, several models stand out as suitable choices. For the 1.8 petrol engine, exemplifying the smaller battery group, you might consider options such as Bosch S40 04, Bosch S50 04, Exide EA612, Exide EB602, or Varta D21, Varta D59. These are just sample models, and other batteries with matching specifications will also suffice. For the larger petrol and all diesel engines, suitable sample models include Bosch S40 07, Bosch S50 07, Exide EA722, Exide EB712, Lucas LP100, Lucas LS100, as well as Varta E38 or Varta E43. Again, these are examples, and the most important thing is to match the electrical specifications and physical dimensions.
One interesting note about the Opel Signum is its shared platform with the Opel Vectra C, meaning battery specifications are often the same between these two models. However, always double-check the battery tray size and the orientation of the terminals (polarity), as even within one model year there can be small but important differences. If in doubt, bring your old battery to the shop to compare directly, or consult the car’s manual for the original part number and specs.
It is also wise to check the manufacturing date and warranty of your chosen battery. Batteries lose capacity over time even if they are not used, so selecting a fresh battery with a long warranty can prevent future headaches. Regularly checking the battery’s condition, especially before winter, will help avoid unexpected breakdowns, which is crucial for a family-friendly car like the Signum that often sees long journeys. Finally, remember to properly dispose of your old battery as it contains hazardous materials—most auto parts stores or garages will handle recycling for you.
To sum up, selecting a battery for the Opel Signum 2003-2008 is primarily about ensuring the right height (max 175mm), choosing a lead-acid battery with the appropriate capacity and CCA for your specific engine, and considering reputable brands for peace of mind. This attention to detail will keep your Signum running smoothly and reliably for years to come.
Opel Signum was produced in the years 2003 – 2008. We invite you to a list of batteries matching individual engine versions.
Basic parameters of batteries suitable for Opel Signum (2003-2008):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Opel Signum – petrol engines:
- 1.8
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 04 | 60 Ah 540 A | 242x175x175 mm | More |
| Bosch S5 S50 04 | 61 Ah 600 A | 242x175x175 mm | More |
| Exide Excell EB602 | 60 Ah 540 A | 242x175x175 mm | More |
| Exide Premium EA612 | 61 Ah 600 A | 242x175x175 mm | More |
| Halfords Standard HCB 075 | 60 Ah 550 A | 242x175x175 mm | More |
| Lucas Premium LP075 | 60 Ah 540 A | 243x175x175 mm | More |
| Lucas Supreme LS075 | 62 Ah 600 A | 242x175x175 mm | More |
| Varta Blue Dynamic D59 | 60 Ah 540 A | 242x175x175 mm | More |
| Varta Silver Dynamic D21 | 61 Ah 600 A | 242x175x175 mm | More |
Opel Signum – petrol engines:
- 2.0 i Turbo
- 2.2 i
- 2.8 V6 Turbo
- 3.2 V6
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 07 | 72 Ah 680 A | 278x175x175 mm | More |
| Bosch S5 S50 07 | 74 Ah 750 A | 278x175x175 mm | More |
| Exide Excell EB712 | 71 Ah 670 A | 278x175x175 mm | More |
| Exide Premium EA722 | 72 Ah 720 A | 278x175x175 mm | More |
| Lucas Premium LP100 | 72 Ah 680 A | 278x175x175 mm | More |
| Lucas Supreme LS100 | 74 Ah 750 A | 278x175x175 mm | More |
| Varta Blue Dynamic E43 | 72 Ah 680 A | 278x175x175 mm | More |
| Varta Silver Dynamic E38 | 74 Ah 750 A | 278x175x175 mm | More |
Opel Signum – diesel engines:
- 1.9 CDTI
- 1.9 CDTI 16V
- 2.0 DTI
- 2.2 DTI
- 3.0 CDTi
- 3.0 V6 CDTI
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 07 | 72 Ah 680 A | 278x175x175 mm | More |
| Bosch S5 S50 07 | 74 Ah 750 A | 278x175x175 mm | More |
| Exide Excell EB712 | 71 Ah 670 A | 278x175x175 mm | More |
| Exide Premium EA722 | 72 Ah 720 A | 278x175x175 mm | More |
| Lucas Premium LP100 | 72 Ah 680 A | 278x175x175 mm | More |
| Lucas Supreme LS100 | 74 Ah 750 A | 278x175x175 mm | More |
| Varta Blue Dynamic E43 | 72 Ah 680 A | 278x175x175 mm | More |
| Varta Silver Dynamic E38 | 74 Ah 750 A | 278x175x175 mm | More |
If you’re still unsure which battery fits your Opel Signum , or if you want to help others in their selection, please send us a photo of your current battery in the comment section at the bottom of the page. You can also send the picture to contact@whatbattery.co.uk (we will place it in the comments to also help other users). Be sure to specify the car model, year, type, as well as the engine capacity and power. We’ll do our best to assist you!