# Which battery for the Ford Focus Mk4 (from 2018)?

> Ford Focus Mk4 battery: EFB 65 Ah and 650 A with Start-Stop (Varta D54), EFB 70 Ah without (Varta N70). Table by engine and number plate search.

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- **Language**: en
- **Last update**: 2026-11-10

Focus IV (HN)

- Focus IV Turnier (HP)

- Focus IV Saloon (HM)

[← All generations of the Ford Focus](https://bateriasonline.es/en/ford-focus-battery)
Car battery by model
With Start-Stop, the Ford Focus Mk4 (from 2018) almost always takes a battery like the Varta D54: EFB, 65 Ah and 650 A, in case size LB3. Versions without Start-Stop take the Varta N70 (EFB, 70 Ah and 760 A); the table shows the battery for each engine.
- from 2018
- 9 engines
- EFB
- Case LB3

[Check with your number plate](https://bateriasonline.es/en/battery-finder-plate-or-vin) We show you only the batteries that fit your exact version.

## Recommended batteries for the Ford Focus Mk4

 For Start-Stop versions
[Varta D54](https://bateriasonline.es/en/varta-d54)
EFB 65 Ah · 650 A (EN)
Case LB3 · 278 × 175 × 175 mm · + right
Recommended for 7 of 9 engines
[See price and specs Varta D54 ](https://bateriasonline.es/en/varta-d54)
 For versions without Start-Stop
[Varta N70](https://bateriasonline.es/en/varta-n70)
EFB 70 Ah · 760 A (EN)
Case L3 · 278 × 175 × 190 mm · + right
Recommended for 1 of 9 engines
[See price and specs Varta N70 ](https://bateriasonline.es/en/varta-n70)
 Equivalent to the Varta N70
[Tudor TK720](https://bateriasonline.es/en/tudor-tk720)
AGM 72 Ah · 760 A (EN)
Case L3 · 278 × 175 × 190 mm · + right
Same dimensions and terminal layout, the same or higher capacity and the same or better technology
[See price and specs Tudor TK720 ](https://bateriasonline.es/en/tudor-tk720)

## Ford Focus Mk4 battery by engine

Each row groups the versions that share an engine. When an engine lists more than one battery, it is because the battery changes with the version or equipment: your number plate settles it.

| Engine | Power | Years | Fuel | With Start-Stop | Without Start-Stop |
|---|---|---|---|---|---|
| 1.0 EcoBoostB3DA, B7DA, SFDC | 63-92 kW (85-125 hp) | from 2018 | Petrol | Varta D54 EFB · 65 Ah · 650 A · LB3 · + right | — |
| 1.0 EcoBoost mHEVB7DA, M0DC | 92-114 kW (125-155 hp) | from 2020 | Hybrid | Varta D54 EFB · 65 Ah · 650 A · LB3 · + right | — |
| 1.0 ECOBOOST MHEV ACTIVEB7DA | 92-114 kW (125-155 hp) | from 2021 | Hybrid | Varta D54 EFB · 65 Ah · 650 A · LB3 · + right | Varta N70 EFB · 70 Ah · 760 A · L3 · + right |
| 1.5 EcoBlueZ2DA, ZTDA, ZTDB | 70-88 kW (95-120 hp) | from 2018 | Diesel | Varta D54 EFB · 65 Ah · 650 A · LB3 · + right Varta N70 EFB · 70 Ah · 760 A · L3 · + right | — |
| 1.5 EcoBoostY1DA, YZDA | 110-134 kW (150-182 hp) | from 2018 | Petrol | Varta D54 EFB · 65 Ah · 650 A · LB3 · + right | — |
| 1.5 Ti-VCTY2DA | 90 kW (122-123 hp) | from 2018 | Petrol | Varta D54 EFB · 65 Ah · 650 A · LB3 · + right | — |
| 2.0 EcoBlueYLDA | 110 kW (150 hp) | from 2018 | Diesel | Varta N70 EFB · 70 Ah · 760 A · L3 · + right | — |
| 2.0 ST EcoBlueBCDA | 140 kW (190 hp) | from 2019 | Diesel | Varta N70 EFB · 70 Ah · 760 A · L3 · + right | — |
| 2.3 ST EcoBoostN3DA, N3DB | 206 kW (280 hp) | from 2019 | Petrol | Varta D54 EFB · 65 Ah · 650 A · LB3 · + right | — |

With Start-Stop: versions with automatic engine stop-start, or that leave the factory with an EFB or AGM battery. Ah = capacity; A = cold cranking current (EN standard); + right/+ left = side of the positive terminal. Under each engine you will find its engine codes, handy for identifying your version.

## What you should know about the Ford Focus Mk4

This page covers Focus IV (HN), Focus IV Turnier (HP) and Focus IV Saloon (HM): 9 engines in the table, petrol (4), diesel (3) and hybrid (2). Most engines have Start-Stop (9 of 9), which is why the most common battery type is EFB, with 65 Ah. The usual case size is LB3 (278 × 175 × 175 mm).
- Model fact: the Ford Focus Mk4 mainly uses case sizes LB3 (278 × 175 × 175 mm) and L3 (278 × 175 × 190 mm). A battery of a different size will not sit securely in the car’s battery tray.
- General tip: if your car came from the factory with an AGM battery, replace it with another AGM; if it has an EFB, with an EFB or an AGM. A conventional battery in a Start-Stop car wears out much sooner and the system may stop working.
- General tip: on many Start-Stop cars the ECU manages battery charging, so when you replace the battery it is best to register the new one with a diagnostic tool.
- General tip: in a compact car that mixes town and open-road driving, the battery suffers most in winter and with lots of equipment switched on (heated rear window, heated seats). If cold starts become sluggish, have it checked before it leaves you stranded.

## Frequently asked questions

### Which battery does the Ford Focus Mk4 (from 2018) take?

With Start-Stop, the Ford Focus Mk4 (from 2018) almost always takes a battery like the Varta D54: EFB, 65 Ah and 650 A, in case size LB3. Versions without Start-Stop take the Varta N70 (EFB, 70 Ah and 760 A); the table shows the battery for each engine.

### Can I fit a standard battery in my Ford Focus Mk4 with Start-Stop?

No. On versions that come with an EFB, such as the Varta D54, you can fit another EFB or upgrade to AGM, but not drop down to a conventional battery: it would last far less with the constant stopping and restarting of Start-Stop.

### What size battery does the Ford Focus Mk4 take?

Depending on the engine, the Ford Focus Mk4 uses these case sizes: LB3 (278 × 175 × 175 mm) and L3 (278 × 175 × 190 mm); dimensions are length × width × height. Also check that the positive terminal is on the same side as on your current battery.

### Does the Varta D54 fit the Ford Focus Mk4?

Yes, it is one of the recommended batteries for the Ford Focus Mk4 with the 1.0 EcoBoost, 1.0 EcoBoost mHEV, 1.0 ECOBOOST MHEV ACTIVE, 1.5 EcoBlue, 1.5 EcoBoost and 1.5 Ti-VCT engines (7 of the 9 engines in the table). For the others, check their row in the table or search by number plate.

### How do I find out exactly which battery my Ford Focus Mk4 takes?

Enter your number plate or chassis number (VIN) in our battery finder: it identifies the exact engine and shows you only the compatible batteries. You can also check the label on your current battery: capacity (Ah), cold cranking (A, EN standard) and technology (AGM, EFB or conventional).

## Other Ford Focus generations

- [ Ford Focus Mk3 from 2010 ](https://bateriasonline.es/en/ford-focus-battery#gen-ford-focus-3)
- [ Ford Focus Mk2 2004-2012 ](https://bateriasonline.es/en/ford-focus-2-battery)
- [ Ford Focus Mk1 1998-2005 ](https://bateriasonline.es/en/ford-focus-battery#gen-ford-focus-1)

## More information

- [Ford Focus battery: every generation](https://bateriasonline.es/en/ford-focus-battery)
- [Car battery sizes: L1-L6, LB1-LB5, B and D (Asian) cases](https://bateriasonline.es/en/car-battery-sizes-l-lb-b-d-cases)
- [Varta A7 (formerly E39): what changed and equivalents](https://bateriasonline.es/en/varta-a7-e39-agm-battery-equivalents)
- [Varta, Bosch, Exide and Tudor car battery equivalents table](https://bateriasonline.es/en/varta-bosch-exide-tudor-car-battery-equivalents)
- [Start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb)
- [Car batteries](https://bateriasonline.es/en/car-batteries)
- [LB3 car batteries](https://bateriasonline.es/en/lb3-car-batteries)
- [What battery does my car need? Guide by model](https://bateriasonline.es/en/car-battery-by-model)

Updated: 1 November 2026 · Source: battery application data by engine (KType TecDoc), the same data our number plate search uses, plus the datasheet of each battery.

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