Choosing the right battery for your Ford Focus Mk3 (2010-) is crucial for ensuring the vehicle’s reliability, especially considering the various engine options and technological features these models can have. The Ford Focus Mk3, produced from 2010 onwards, comes with a wide selection of engines, both petrol and diesel, as well as versions equipped with or without the Start-Stop system. This diversity means that not every battery will be suitable for every variant, so it is essential to pay attention to the specific requirements for your engine type and car features.
One of the most important aspects to consider is whether your Focus is equipped with the Start-Stop system. Vehicles with Start-Stop technology require batteries designed to handle frequent engine starts and stops, as well as the increased electrical demands. For these versions, Enhanced Flooded Batteries (EFB) are the preferred choice, as they offer improved durability and charge acceptance compared to traditional lead-acid batteries. For example, the 1.0 EcoBoost, the 2.0 ST (with Start-Stop), the 1.6 EcoBoost (with Start-Stop), as well as certain diesel options like the 1.6 TDCi with Start-Stop and the 1.6 TDCi ECOnetic, all require EFB batteries. In these cases, a suitable example of matching battery models would include Bosch S4 E07, Exide EL652, Halfords EFB 100, Lucas LE100, and Varta D54 for those with a 65Ah and 650A requirement, while models like Bosch S4 E10, Exide EL752, Halfords EFB 110, Lucas LE110, and Varta E46 are recommended for 75Ah and 730A demands. Remember, these are just examples of compatible batteries—there are other brands and models that may also fit the requirements.
For Focus Mk3 versions that do not have the Start-Stop system, traditional lead-acid (also known as flooded) batteries are generally sufficient. For instance, vehicles such as the 1.6 Ti, 1.6 LPG, 1.6 Flexifuel, and the 2.0 Ti-GDi—all petrol engines without Start-Stop—require batteries with a capacity between 60 and 62Ah and a cold cranking amperage (CCA) between 540 and 600A. The same is true for the 2.0 ST without Start-Stop and the 2.0 TDCi diesel, which need batteries with a higher capacity (71-74Ah) and higher CCA (670-750A). In these cases, example compatible battery models include Bosch S40 04, Bosch S50 04, Exide EA612, Exide EB602, Halfords HCB 075, Lucas LP075, Lucas LS075, Varta D21, and Varta D59 for the lower capacity group, and Bosch S40 07, Bosch S50 07, Exide EA722, Exide EB712, Lucas LP100, Lucas LS100, Varta E38, and Varta E43 for the higher capacity group. Again, these are just sample references, and you should always confirm the fit and specifications before purchasing.
A crucial detail for all Focus Mk3 models, regardless of engine or battery type, is the physical size of the battery—specifically, the height. The Focus Mk3 is designed to accommodate batteries with a reduced height of 175mm. Using a battery that is taller than this may result in installation problems, or worse, could interfere with the hood closing properly or with other engine bay components. This is a detail that is sometimes overlooked, but it is vital for safety and optimal performance.
It is also worth noting that when replacing your battery, especially in models with Start-Stop, it is recommended to register the new battery in the vehicle’s system using diagnostic equipment. This allows the car’s intelligent charging system to adapt to the new battery, ensuring optimal charging and extending battery life. If you skip this step, you may experience charging issues or premature battery wear.
Another interesting fact is that EFB batteries, while more expensive, are designed to withstand significantly more charge and discharge cycles than standard lead-acid batteries. This makes them not only the preferred option for Start-Stop systems, but also a good choice for drivers who use their car for frequent short trips or in urban environments with heavy traffic, where the engine is stopped and started often.
In summary, to select the right battery for your Ford Focus Mk3 (2010-), you should always check whether your car uses the Start-Stop system, pay attention to the required battery capacity (Ah) and cold cranking amperage (A), and most importantly, make sure the battery’s height is 175mm to ensure a proper fit. When in doubt, consult your vehicle’s manual or ask a professional for advice, and always consider reputable brands for reliability and peace of mind.
Ford Focus in version Mk3 is produced from 2010. We invite you to a list of batteries matching individual engine versions.
Basic parameters of batteries suitable for Ford Focus (2010-):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Ford Focus Mk3 – petrol engines:
- 1.6 Flexifuel
- 1.6 LPG
- 1.6 Ti
- 2.0 Ti-GDi
| 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 |
For the Ford Focus Mk3 models produced from 2010, specifically equipped with the 1.6 Ti (without Start-Stop), 1.6 LPG (without Start-Stop), 1.6 Flexifuel (without Start-Stop), and 2.0 Ti-GDi (without Start-Stop) petrol engines, a specific group of batteries is recommended to ensure reliable starting and optimal performance. These engines do not feature the Start-Stop system, so they require standard lead-acid batteries that provide sufficient cold cranking amps and capacity for everyday driving needs without the demands of frequent engine restarts.
The batteries suitable for these engines are typically in the 60-62 Ah capacity range, with cold cranking amps (CCA) between 540 and 600 A. The physical dimensions of the recommended batteries are generally 242-243 mm in length, 175 mm in width, and 175 mm in height, making them a perfect fit for the battery tray in the engine compartment. The terminal layout is standard for this model, with a polarity of 0 (positive terminal on the right), terminal type 1 (standard European round posts), and B13 mounting configuration.
Notable compatible battery options include Bosch S4 (S40 04) and S5 (S50 04), Varta Blue Dynamic (D59) and Silver Dynamic (D21), Exide Premium (EA612) and Excell (EB602), as well as batteries from Halfords (HCB 075) and Lucas (LS075, LP075) ranges. All these batteries are standard type, not AGM or EFB, which matches the requirements of Focus Mk3 variants without Start-Stop technology. Choosing one of these batteries ensures proper fitment, reliable starting power, and compatibility with the vehicle’s electrical system.
Ford Focus Mk3 – petrol engines:
- 2.0 ST
| 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 |
For the Ford Focus Mk3 fitted with the 2.0 ST petrol engine without the Start-Stop system, a different group of batteries is recommended to accommodate the higher power requirements of this performance-oriented variant. The 2.0 ST engine, while still not utilizing Start-Stop technology, benefits from a battery with greater capacity and cold cranking performance to ensure consistent starting and electrical supply, especially in demanding driving conditions.
Batteries suitable for the 2.0 ST without Start-Stop are typically in the 71-74 Ah capacity range, offering cold cranking amps (CCA) from 670 to 750 A. The physical dimensions are larger compared to other petrol engines, with a length of 278 mm, width of 175 mm, and height of 175 mm. This larger size is necessary to accommodate the increased power needs of the ST engine and to fit securely within the designated battery compartment. The terminal layout remains standard for the Focus Mk3, with polarity 0 (positive terminal on the right), terminal type 1 (European round posts), and a B13 mounting configuration.
Leading battery choices for this engine include Bosch S4 (S40 07) and S5 (S50 07), Varta Blue Dynamic (E43) and Silver Dynamic (E38), as well as Exide Premium (EA722) and Excell (EB712), alongside Lucas Supreme (LS100) and Premium (LP100) models. All of these are standard lead-acid batteries, matching the requirements of vehicles without Start-Stop functionality. Selecting one of these batteries ensures reliable starting power and optimal performance for the 2.0 ST, supporting both everyday driving and the increased electrical demands of spirited driving associated with the ST model.
Ford Focus Mk3 – petrol engines:
- 2.0 ST – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 EFB S4 E07 | 65 Ah 650 A | 278x175x175 mm | More |
| Exide EFB EL652 | 65 Ah 650 A | 278x175x175 mm | More |
| Halfords Advanced EFB 100 | 65 Ah 650 A | 277x175x175 mm | More |
| Lucas Fusion EFB LE100 | 65 Ah 650 A | 278x175x175 mm | More |
| Varta Blue Dynamic EFB D54 | 65 Ah 650 A | 278x175x175 mm | More |
For Ford Focus Mk3 models equipped with the 2.0 ST Start-Stop petrol engine, the battery requirements differ significantly from those of non-Start-Stop variants. The presence of the Start-Stop system means that the battery must be capable of supporting frequent engine restarts and a higher load from onboard electronics. As a result, these engines require Enhanced Flooded Battery (EFB) technology, which is specifically designed to handle the increased cycling and deep discharge associated with Start-Stop operation.
The recommended batteries for the 2.0 ST Start-Stop engine are all EFB types, with a capacity of 65 Ah and a cold cranking current (CCA) of 650 A. The physical dimensions of these batteries are consistent, measuring 278 mm in length, 175 mm in width, and 175 mm in height. The terminal layout is polarity 0, meaning the positive terminal is on the right, and terminal type 1, which is the standard European round post. The B13 mounting configuration ensures the battery fits securely in the designated tray of the engine compartment.
Among the most suitable options are the Bosch S4 EFB (S4 E07), Varta Blue Dynamic EFB (D54), Exide EFB (EL652), Lucas Fusion EFB (LE100), and Halfords Advanced (EFB 100). These batteries are engineered to meet the rigorous demands of Start-Stop technology, providing reliable starting performance and maintaining consistent power delivery to all electrical systems during stop phases. Choosing an EFB battery from one of these reputable brands ensures long-term durability, optimal function of the Start-Stop system, and compatibility with the advanced features of the 2.0 ST petrol engine in the Ford Focus Mk3.
Ford Focus Mk3 – petrol engines:
- 1.0 EcoBoost – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 EFB S4 E07 | 65 Ah 650 A | 278x175x175 mm | More |
| Exide EFB EL652 | 65 Ah 650 A | 278x175x175 mm | More |
| Halfords Advanced EFB 100 | 65 Ah 650 A | 277x175x175 mm | More |
| Lucas Fusion EFB LE100 | 65 Ah 650 A | 278x175x175 mm | More |
| Varta Blue Dynamic EFB D54 | 65 Ah 650 A | 278x175x175 mm | More |
For Ford Focus Mk3 models powered by the 1.0 EcoBoost Start-Stop petrol engines, the battery requirements are similar to those specified for other Start-Stop variants in the lineup. The 1.0 EcoBoost engines are equipped with advanced Start-Stop systems, which place additional demands on the battery due to frequent engine restarts, deeper cycling, and the need to support a range of electronic systems even when the engine is temporarily off. As such, these engines must be paired with Enhanced Flooded Batteries (EFB) that are specifically engineered for Start-Stop operation.
The optimal battery specifications for the 1.0 EcoBoost Start-Stop include a capacity of 65 Ah and a cold cranking amperage (CCA) of 650 A. The recommended batteries share a consistent physical profile, measuring 278 mm in length, 175 mm in width, and 175 mm in height, which ensures a perfect fit within the original battery tray of the Focus Mk3. The terminal layout is polarity 0, meaning the positive terminal is on the right-hand side, terminal type 1 (European standard round posts), and the mounting configuration is B13. This uniformity ensures easy replacement and correct installation without the need for modifications.
Leading battery options for the 1.0 EcoBoost Start-Stop are the Bosch S4 EFB (S4 E07), Varta Blue Dynamic EFB (D54), Exide EFB (EL652), Lucas Fusion EFB (LE100), and Halfords Advanced (EFB 100). All these batteries use EFB technology, which offers improved charge acceptance and greater resistance to deep cycling compared to conventional lead-acid batteries. This makes them ideal for handling the operational demands of Start-Stop systems. Selecting one of these recommended EFB batteries ensures reliable starting, longevity, and full compatibility with the advanced features of the 1.0 EcoBoost engine in the Ford Focus Mk3.
Ford Focus Mk3 – petrol engines:
- 1.6 EcoBoost – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 EFB S4 E10 | 75 Ah 730 A | 315x175x175 mm | More |
| Exide EFB EL752 | 75 Ah 730 A | 315x175x175 mm | More |
| Halfords Advanced EFB 110 | 75 Ah 730 A | 317x175x175 mm | More |
| Lucas Fusion EFB LE110 | 75 Ah 730 A | 315x175x175 mm | More |
| Varta Blue Dynamic EFB E46 | 75 Ah 730 A | 315x175x175 mm | More |
For Ford Focus Mk3 models equipped with the 1.6 EcoBoost petrol engines featuring the Start-Stop system, the battery requirements are more demanding compared to standard variants. The Start-Stop technology in these engines necessitates a battery capable of coping with frequent engine restarts, deeper cycling, and the support of a wide range of electronic systems, even when the engine is temporarily switched off at traffic lights or during stops. Therefore, only Enhanced Flooded Batteries (EFB) are suitable for these vehicles, as they are specifically designed to handle the increased electrical and cycling loads associated with Start-Stop functionality.
The recommended EFB batteries for the 1.6 EcoBoost Start-Stop engines have a capacity of 75 Ah and a high cold cranking amperage (CCA) of 730 A, ensuring reliable starting performance and sufficient power reserve under all operating conditions. The physical dimensions for these batteries are 315-317 mm in length, 175 mm in width, and 175 mm in height, which matches the original battery tray and ensures a secure fit in the engine compartment. The terminal configuration is standard for the Focus Mk3, with polarity 0 (positive terminal on the right), terminal type 1 (European round posts), and B13 mounting, making installation straightforward and compatible with the factory wiring.
Top choices in this category include the Bosch S4 EFB (S4 E10), Varta Blue Dynamic EFB (E46), Exide EFB (EL752), Lucas Fusion EFB (LE110), and Halfords Advanced (EFB 110). Each of these batteries uses EFB technology, which offers improved charge acceptance, durability, and resistance to deep cycling compared to conventional batteries. By choosing one of these recommended EFB batteries, owners of the 1.6 EcoBoost Start-Stop models can ensure optimal function of the Start-Stop system, reliable starting, and long-term battery life, fully supporting the advanced features and performance of the Ford Focus Mk3.
Ford Focus Mk3 – diesel engines:
- 2.0 TDCi
| 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 |
For the Ford Focus Mk3 models equipped with the 2.0 TDCi diesel engines without Start-Stop functionality, a specific set of standard lead-acid batteries is recommended to meet the higher starting power requirements typical of diesel units. These engines rely on a robust battery to ensure reliable cold starts, particularly in colder climates, and to support the increased electrical demands associated with diesel pre-heating and onboard systems. Since these variants do not incorporate Start-Stop technology, there is no need for advanced EFB or AGM batteries; instead, high-quality conventional batteries with adequate capacity and cold cranking performance are ideal.
The suitable batteries for the 2.0 TDCi engines in the Focus Mk3 fall within the 71-74 Ah capacity range, with cold cranking amps (CCA) between 670 and 750 A. The physical dimensions for these batteries are standardized at 278 mm in length, 175 mm in width, and 175 mm in height, ensuring a precise fit within the original battery tray of the vehicle. The terminal layout for all compatible options is polarity 0, meaning the positive terminal is located on the right-hand side, with terminal type 1 (standard European round posts), and the mounting configuration is B13. This consistency simplifies installation and guarantees proper connection to the vehicle’s electrical system.
Leading battery options for the 2.0 TDCi diesel without Start-Stop include the Bosch S4 (S40 07) and S5 (S50 07), Varta Blue Dynamic (E43) and Silver Dynamic (E38), Exide Premium (EA722) and Excell (EB712), as well as Lucas Supreme (LS100) and Premium (LP100) series. All of these are standard lead-acid types, specifically designed to provide the reliable starting performance and durability needed for diesel engines. Choosing any of these well-matched batteries ensures optimal starting power, consistent operation, and compatibility with the vehicle’s electrical and mounting systems, making them a dependable choice for the Ford Focus Mk3 2.0 TDCi without Start-Stop.
Ford Focus Mk3 – diesel engines:
- 1.6 TDCi – with Start-Stop
- 1.6 TDCi ECOnetic – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S4 EFB S4 E10 | 75 Ah 730 A | 315x175x175 mm | More |
| Exide EFB EL752 | 75 Ah 730 A | 315x175x175 mm | More |
| Halfords Advanced EFB 110 | 75 Ah 730 A | 317x175x175 mm | More |
| Lucas Fusion EFB LE110 | 75 Ah 730 A | 315x175x175 mm | More |
| Varta Blue Dynamic EFB E46 | 75 Ah 730 A | 315x175x175 mm | More |
For the Ford Focus Mk3 equipped with the 1.6 TDCi Start-Stop and 1.6 TDCi ECOnetic Start-Stop diesel engines, the battery requirements are more demanding due to the presence of Start-Stop technology. This system, which automatically shuts down and restarts the engine at stops, places additional strain on the battery by increasing the number of start cycles and requiring reliable power delivery to support onboard electronics even when the engine is switched off. As a result, only Enhanced Flooded Batteries (EFB) are suitable for these diesel variants, as they are specifically engineered to withstand frequent deep cycling and rapid charge acceptance.
The recommended EFB batteries for the 1.6 TDCi Start-Stop and 1.6 TDCi ECOnetic Start-Stop feature a capacity of 75 Ah and provide a high cold cranking amperage (CCA) of 730 A, ensuring dependable engine starts even in challenging weather conditions and under heavy electrical load. The physical dimensions for these batteries are standardized at 315-317 mm in length, 175 mm in width, and 175 mm in height, guaranteeing a correct fit within the original battery compartment. The terminal layout is polarity 0, with the positive terminal on the right, and terminal type 1 (standard European round posts), while the mounting configuration is B13, which matches the factory setup for secure installation.
Top battery choices for these diesel Start-Stop models include the Bosch S4 EFB (S4 E10), Varta Blue Dynamic EFB (E46), Exide EFB (EL752), Lucas Fusion EFB (LE110), and Halfords Advanced (EFB 110). Each of these batteries utilizes advanced EFB technology, delivering superior durability, enhanced charge acceptance, and greater resistance to deep cycling compared to traditional batteries. By selecting one of these recommended EFB batteries, owners of the 1.6 TDCi Start-Stop and 1.6 TDCi ECOnetic Start-Stop engines can ensure reliable starting performance, full compatibility with the Start-Stop system, and long battery life, supporting the efficient and advanced features of the Ford Focus Mk3 diesel lineup.
If you’re still unsure which battery fits your Ford Focus , 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!