Choosing the right battery for your Mercedes-Benz B-Class W245 (produced between 2005 and 2011) is a crucial step in ensuring your vehicle’s reliability, especially considering the model's variety of engines, fuel types, and technological features like Start-Stop systems. The B-Class W245 covers a range of petrol and diesel engines, including both standard and NGT (natural gas) versions, as well as performance-oriented variants like the B 200 Turbo. Selecting the proper battery depends on several factors, most notably whether your car is equipped with a Start-Stop system and the specific engine configuration you own.
For B-Class W245 vehicles equipped with the Start-Stop system—most commonly found in models like the B 160, B 180, and B 180 NGT running on petrol—it is essential to choose an AGM (Absorbent Glass Mat) battery. Start-Stop technology relies on the battery to repeatedly restart the engine during various driving scenarios, demanding a battery that can withstand frequent cycles of discharge and recharge. AGM batteries are specifically engineered for this purpose, offering enhanced durability, faster charging, and improved resistance to deep discharge. These batteries also provide better performance in high-demand electrical environments, like those found in modern vehicles with numerous electronic systems. For these engines, the recommended capacity falls between 70 and 72 Ah (ampere-hours), with a cold cranking amperage (CCA) range from 720 to 760 A. This specification ensures not only reliable startup but also longevity and stable functioning of the vehicle’s advanced features.
Among the suitable AGM batteries, you can consider options such as the Bosch S5A 08, Exide EK700, Exide EK720, Halfords AGM 096, Lucas LF096, and Varta E39. It's important to note that these are just a few examples of compatible models, and other equivalent AGM batteries meeting the same specifications may also be used. One interesting aspect of AGM technology is its spill-proof nature, as the electrolyte is absorbed into glass mats, making the battery safer in case of tilting or impact—an added benefit for vehicles that may experience sharp maneuvers or vibrations.
If your B-Class W245 does not feature a Start-Stop system, which is the case for models like the B 150, B 160, B 170, B 170 NGT, B 180, B 180 NGT, B 200, B 200 Turbo, B 180 CDI, and B 200 CDI, then a traditional lead-acid battery is appropriate. These vehicles generally require a slightly larger battery, with a recommended capacity between 74 and 78 Ah and a CCA ranging from 680 to 780 A. Such batteries are well-suited to the energy requirements of these engines, providing reliable starting power and sufficient reserve capacity for the vehicle’s electrical systems. Modern lead-acid batteries have evolved considerably and now often incorporate advanced features such as improved vibration resistance and longer service intervals.
For non-Start-Stop versions, some example battery models include Bosch S40 08, Bosch S50 08, Exide EA770, Exide EB740, Halfords HCB 096, Lucas LP096, Lucas LS096, Varta E11, and Varta E44. Again, these are just representative samples; other batteries matching the given specifications can also serve as alternatives. When choosing among these, consider factors such as warranty length, brand reputation, and availability in your region.
A fascinating aspect of battery selection for the B-Class W245 is the impact of climate on performance. If you live in an area with particularly harsh winters, prioritizing a battery with a higher CCA rating can make a noticeable difference in cold-start reliability. Conversely, in hotter climates, batteries are more prone to fluid evaporation, so ensuring your battery is well-maintained and checked regularly is vital.
Finally, always double-check your car’s owner’s manual or consult a trusted automotive professional before purchasing a new battery, as the exact requirements may vary slightly depending on the year of production or optional equipment installed. The correct installation is equally important—modern vehicles, especially those with Start-Stop or complex electronics, may require a battery registration or reset procedure for optimal functioning.
In conclusion, the main guideline for Mercedes-Benz B-Class W245 battery selection is straightforward: choose AGM batteries for Start-Stop equipped models and quality lead-acid batteries for the rest, always within the recommended capacity and performance ranges. With the right battery, your B-Class will continue to deliver the dependable performance and comfort that Mercedes-Benz is known for.
Mercedes-Benz B-Class in version W245 was produced in the years 2005 – 2011. Below we present the specifications of batteries suitable for specific engines.
Basic parameters of batteries suitable for Mercedes-Benz B-Class (2005-2011):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Mercedes-Benz B-Class W245 – petrol engines:
- B 150
- B 160
- B 170
- B 170 NGT
- B 180
- B 180 NGT
- B 200
- B 200 Turbo
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 08 | 74 Ah 680 A | 278x175x190 mm | More |
| Bosch S5 S50 08 | 77 Ah 780 A | 278x175x190 mm | More |
| Exide Excell EB740 | 74 Ah 680 A | 278x175x190 mm | More |
| Exide Premium EA770 | 77 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard HCB 096 | 76 Ah 680 A | 278x175x190 mm | More |
| Lucas Premium LP096 | 75 Ah 680 A | 278x175x190 mm | More |
| Lucas Supreme LS096 | 78 Ah 780 A | 278x175x190 mm | More |
| Varta Blue Dynamic E11 | 74 Ah 680 A | 278x175x190 mm | More |
| Varta Silver Dynamic E44 | 77 Ah 780 A | 278x175x190 mm | More |
Mercedes-Benz B-Class W245 – petrol engines:
- B 160 – with Start-Stop
- B 180 – with Start-Stop
- B 180 NGT – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 08 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK700 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK720 | 72 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard AGM 096 | 70 Ah 720 A | 278x175x190 mm | More |
| Halfords Advanced AGM 096 | 70 Ah 760 A | 278x175x190 mm | More |
| Lucas Fusion AGM LF096 | 70 Ah 760 A | 278x175x190 mm | More |
| Varta Silver Dynamic AGM E39 | 70 Ah 760 A | 278x175x190 mm | More |
Mercedes-Benz B-Class W245 – diesel engines:
- B 180 CDI
- B 200 CDI
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 S40 08 | 74 Ah 680 A | 278x175x190 mm | More |
| Bosch S5 S50 08 | 77 Ah 780 A | 278x175x190 mm | More |
| Exide Excell EB740 | 74 Ah 680 A | 278x175x190 mm | More |
| Exide Premium EA770 | 77 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard HCB 096 | 76 Ah 680 A | 278x175x190 mm | More |
| Lucas Premium LP096 | 75 Ah 680 A | 278x175x190 mm | More |
| Lucas Supreme LS096 | 78 Ah 780 A | 278x175x190 mm | More |
| Varta Blue Dynamic E11 | 74 Ah 680 A | 278x175x190 mm | More |
| Varta Silver Dynamic E44 | 77 Ah 780 A | 278x175x190 mm | More |
If you’re still unsure which battery fits your Mercedes-Benz B-Class , 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!