# BMW Z4 battery: what each engine takes, with prices

> We stock 7 batteries that fit the BMW Z4 across its 4 generations (2002-2025), from 60 to 105 Ah, with cold cranking between 540 and 950 A and prices starting at 64.95 € including VAT.

## Which battery does a BMW Z4 take?

It depends on the engine. BMW Z4 owners mostly buy Varta E9 Dynamic SLI 70Ah (85.90 €), Exide EB740 Excell 74Ah (61.95 €) and Varta A7 Dynamic AGM 70Ah (134.95 €) from us. The table shows the recommended battery for each engine with its price (VAT included) and a link to its page; with your number plate or VIN we tell you the exact one in seconds.

## Recommended battery for each BMW Z4 engine

| Engine | Generation | Recommended battery | Price | URL |
|---|---|---|---|---|
| sDrive 23 i (150 kW / 204 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-23-i-150-kw-204cv |
| 3.0 i (170 kW / 231 CV) | Z4 Roadster I (2002–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/30-i-170-kw-231cv |
| 3.0 si (195 kW / 265 CV) | Z4 Roadster I (2002–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/30-si-195-kw-265cv |
| M40 i (250 kW / 340 CV) | Z4 Roadster III (2018–2025) | Varta A5 Dynamic AGM 95Ah | 179,99 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-g29/m40-i-250-kw-340cv |
| sDrive 20 i (120 kW / 163 CV) | Z4 Roadster III (2018–2025) | Varta A6 Dynamic AGM 80Ah | 149,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-g29/sdrive-20-i-120-kw-163cv |
| sDrive 20 i (145 kW / 197 CV) | Z4 Roadster III (2018–2025) | Varta A6 Dynamic AGM 80Ah | 149,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-g29/sdrive-20-i-145-kw-197cv |
| sDrive 30 i (190 kW / 258 CV) | Z4 Roadster III (2018–2025) | Varta A6 Dynamic AGM 80Ah | 149,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-g29/sdrive-30-i-190-kw-258cv |
| sDrive 18 i (115 kW / 156 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-18-i-115-kw-156cv |
| sDrive 20 i (120 kW / 163 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-20-i-120-kw-163cv |
| sDrive 20 i (135 kW / 184 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-20-i-135-kw-184cv |
| sDrive 28 i (180 kW / 245 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-28-i-180-kw-245cv |
| sDrive 30 i (190 kW / 258 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-30-i-190-kw-258cv |
| sDrive 30 i (195 kW / 265 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-30-i-195-kw-265cv |
| sDrive 35 i (225 kW / 306 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-35-i-225-kw-306cv |
| sDrive 35 is (250 kW / 340 CV) | Z4 Roadster II (2009–2016) | Varta A7 Dynamic AGM 70Ah | 134,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e89/sdrive-35-is-250-kw-340cv |
| 3.0 si (195 kW / 265 CV) | Z4 Coupe (2006–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-coupe-e86/30-si-195-kw-265cv |
| M (252 kW / 343 CV) | Z4 Coupe (2006–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-coupe-e86/m-252-kw-343cv |
| 2.0 i (110 kW / 150 CV) | Z4 Roadster I (2002–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/20-i-110-kw-150cv |
| 2.2 i (125 kW / 170 CV) | Z4 Roadster I (2002–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/22-i-125-kw-170cv |
| 2.5 i (130 kW / 177 CV) | Z4 Roadster I (2002–2009) | Varta E11 Dynamic SLI 74Ah | 74,95 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/25-i-130-kw-177cv |
| 2.5 i (141 kW / 192 CV) | Z4 Roadster I (2002–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/25-i-141-kw-192cv |
| 2.5 si (155 kW / 211 CV) | Z4 Roadster I (2002–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/25-si-155-kw-211cv |
| 2.5 si (160 kW / 218 CV) | Z4 Roadster I (2002–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/25-si-160-kw-218cv |
| M (252 kW / 343 CV) | Z4 Roadster I (2002–2009) | Varta E44 Dynamic SLI 77Ah | 85,40 | https://baterias.com/gb/car-batteries/bmw/z4-roadster-e85/m-252-kw-343cv |

## BMW Z4 generations

Each generation takes a different battery. If you are torn between two, check the body style or use the number plate lookup.

| Generation | Years | Body | Batteries | URL |
|---|---|---|---|---|
| Z4 Roadster III | 2018–2025 | cabrio | 8 | /gb/car-batteries/bmw/z4-roadster-g29 |
| Z4 Roadster II | 2009–2016 | cabrio | 18 | /gb/car-batteries/bmw/z4-roadster-e89 |
| Z4 Coupe | 2006–2009 | coupe | 4 | /gb/car-batteries/bmw/z4-coupe-e86 |
| Z4 Roadster I | 2002–2009 | cabrio | 19 | /gb/car-batteries/bmw/z4-roadster-e85 |

## Best-selling batteries for the BMW Z4

| Modelo | V | Ah | CCA (EN) | Tech | € VAT incl. | Stock | URL |
|---|---|---|---|---|---|---|---|
| Car battery Varta E11 Dynamic SLI 12V 74Ah 680A | 12 | 74 | 680 | PLOMO/ACIDO | 74,95 | ✓ | https://baterias.com/gb/battery-varta-e11-12v-74ah-680a |
| Car battery Varta E44 Dynamic SLI 12V 77Ah 780A | 12 | 77 | 780 | PLOMO/ACIDO | 85,40 | ✓ | https://baterias.com/gb/battery-varta-e44-12v-77ah-780a |
| Start-Stop battery Varta A7 Dynamic AGM 12V 70Ah 760A AGM | 12 | 70 | 760 | AGM | 134,95 | ✓ | https://baterias.com/gb/battery-varta-a7-agm-12v-70ah-760a |
| Car battery Varta D24 Dynamic SLI 12V 60Ah 540A | 12 | 60 | 540 | PLOMO/ACIDO | 64,95 | ✓ | https://baterias.com/gb/battery-varta-d24-12v-60ah-540a |
| Start-Stop battery Varta A6 Dynamic AGM 12V 80Ah 800A AGM | 12 | 80 | 800 | AGM | 149,95 | ✓ | https://baterias.com/gb/battery-varta-a6-agm-12v-80ah-800a |
| Start-Stop battery Varta A5 Dynamic AGM 12V 95Ah 850A AGM | 12 | 95 | 850 | AGM | 179,99 | ✓ | https://baterias.com/gb/battery-varta-a5-agm-12v-95ah-850a |
| Start-Stop battery Varta A4 Dynamic AGM 12V 105Ah 950A AGM | 12 | 105 | 950 | AGM | 189,30 | ✓ | https://baterias.com/gb/battery-varta-a4-agm-12v-105ah-950a |

## How to know which battery your BMW Z4 takes

The real shortcut is your registration number. It settles generation, engine and factory battery in seconds — exactly where most people get it wrong when buying.

Prefer to do it manually? Check the date of first registration on your V5C and match it against the generation table above. When a year straddles two generations, the body style decides it: five-door hatch, estate or coupé.

As a final check, look at the battery currently fitted: the label shows capacity (Ah) and cold cranking amps (A). Always replace with equal or higher figures, never lower, and keep the same dimensions and terminal layout.

## Start-Stop: which battery your Z4 needs

The later Z4 generations run Start-Stop, which puts the battery through hundreds of micro-cycles a day. These cars require EFB (basic Start-Stop) or AGM (Start-Stop with regenerative braking): fitting a conventional battery instead cuts service life to a few months and the ECU may disable the function. Rule of thumb: never downgrade from the technology fitted at the factory.

## Frequently asked questions

### Which battery does a BMW Z4 take?
It depends on the engine. BMW Z4 owners mostly buy Varta E9 Dynamic SLI 70Ah (85.90 €), Exide EB740 Excell 74Ah (61.95 €) and Varta A7 Dynamic AGM 70Ah (134.95 €) from us. The table shows the recommended battery for each engine with its price (VAT included) and a link to its page; with your number plate or VIN we tell you the exact one in seconds.

### How much does a BMW Z4 battery cost?
Between 64.95 € and 189.30 €, VAT included, depending on capacity and technology (AGM, lead-acid). Start-Stop versions (AGM or EFB) sit at the top of the range because they withstand many more cycles.

### How do I know which generation my Z4 is?
By the registration year: Z4 Roadster III (2018-2025); Z4 Roadster II (2009-2016); Z4 Coupe (2006-2009); Z4 Roadster I (2002-2009). If your year falls in the overlap between two generations, tell them apart by body type (hatchback, estate or coupé) or use the plate finder, which settles it with no doubt.

### How quickly can I get a battery for my BMW Z4?
Standard delivery to mainland Spain and Portugal takes 1-2 working days; other EU countries 4-7 working days. Each product page shows the exact lead time and whether express delivery is available.

### What happens if I fit a standard battery to a BMW Z4 with Start-Stop?
It lasts only a few months: Start-Stop puts the battery through hundreds of cycles a day and a conventional battery cannot cope. The ECU may also disable the automatic stop function. Always fit EFB or AGM, the same technology as the original.

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Updated: 2026-11-01 · https://baterias.com/gb/car-batteries/bmw/z4