Choosing the right battery for your BMW 1 Series F20, F21 (manufactured from 2011 onwards) is essential for ensuring optimal performance, reliability, and longevity of your vehicle’s electrical system. The F20 and F21 generation, being a modern BMW, comes equipped with advanced electronics and, in most variants, the Start-Stop system, which places higher demands on the battery compared to older models. In this context, selecting a suitable battery type and model is crucial for trouble-free operation and to fully enjoy the driving experience that BMW is known for.
For the BMW 1 Series F20/F21, regardless of whether you drive a petrol or diesel variant, the manufacturer predominantly recommends AGM (Absorbent Glass Mat) batteries. AGM technology is particularly well-suited for vehicles with Start-Stop systems and those with high electrical demands, as it offers excellent deep-cycle durability and is more resilient to frequent starts and stops compared to conventional lead-acid batteries. This is especially relevant given that almost all engine variants of the F20 and F21 series, such as the 116i, 118i, 125i, M135i, and their diesel counterparts like the 116d, 118d, 120d, and 125d, are equipped with Start-Stop technology. Even the few models without Start-Stop, such as the 114i, are best served with an AGM battery, ensuring consistent starting power and extended service life.
When it comes to technical specifications, BMW F20 and F21 models generally require a battery with a capacity of 80-82 Ah and a cold cranking amperage (CCA) of 800A. This specific range is designed to accommodate the power requirements of the car’s extensive electronic systems, climate control, infotainment, and, in diesel engines, the increased starter motor demand. Equipping your car with a battery below these specifications could lead to frequent battery drainage, sluggish starts, or even damage to the vehicle’s electrical components. Conversely, installing a battery with significantly higher specifications is unnecessary and may not bring tangible benefits, as the charging system is calibrated for a particular battery profile.
In terms of compatible battery models, there is a selection of examples that are commonly recommended and fit the requirements for the BMW 1 Series F20/F21. These include models such as Bosch S5A 11, Exide EK800, Exide EK820, Halfords AGM 115, Lucas LF115, and Varta F21. Please note that these are merely examples of compatible batteries and not an exhaustive list. It’s always wise to cross-reference your choice with your local dealer or battery specialist, as regional availability and advancements in battery technology may introduce new options. Remember to check the battery dimensions and terminal layout to ensure a perfect fit within the battery compartment of your vehicle.
An interesting aspect of AGM batteries is their spill-proof design and resistance to vibration, which makes them not only safer but also more durable in the long run. This is particularly advantageous for drivers who frequently encounter rough roads or abrupt driving conditions, as AGM batteries are less prone to internal damage. Furthermore, because these batteries are designed to endure more charge and discharge cycles, they are also better suited for city driving, where the Start-Stop system is most active.
It’s important to mention that whenever you replace the battery in a modern BMW, including the F20 and F21, the new battery should be registered in the vehicle’s onboard computer system. This process, often referred to as “battery registration,” ensures that the car’s charging strategy is correctly matched to the characteristics of the new battery. Failing to do this can result in undercharging or overcharging, which can reduce the lifespan of your new battery or even cause electrical issues.
In summary, when choosing a battery for your BMW 1 Series F20 or F21, opt for an AGM battery with a capacity of 80-82 Ah and a CCA of 800A, as this aligns with the car’s technical and functional requirements. While there are several example models that fit, always double-check compatibility and ensure the battery is properly registered after installation. AGM technology not only supports the vehicle’s Start-Stop system but also provides durability and reliability, making it the optimal choice for the dynamic and sophisticated BMW 1 Series.
BMW 1 Series in version F20, F21 is produced from 2011. The following table presents information about batteries that match each of the engines available on the market.
Basic parameters of batteries suitable for BMW 1 Series (2011-):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
BMW 1 Series F20, F21 – petrol engines:
- 114 i
- 116 i – with Start-Stop
- 118 i – with Start-Stop
- 125 i – with Start-Stop
- M 135 i – with Start-Stop
- M 135 i xDrive – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 11 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK800 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK820 | 82 Ah 800 A | 315x175x190 mm | More |
| Halfords Advanced AGM 115 | 80 Ah 800 A | 317x175x190 mm | More |
| Lucas Fusion AGM LF115 | 80 Ah 800 A | 315x175x190 mm | More |
| Varta Silver Dynamic AGM F21 | 80 Ah 800 A | 315x175x190 mm | More |
BMW 1 Series F20, F21 – diesel engines:
- 114 d – with Start-Stop
- 116 d – with Start-Stop
- 118 d – with Start-Stop
- 118 d xDrive – with Start-Stop
- 120 d – with Start-Stop
- 120 d xDrive – with Start-Stop
- 125 d – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 11 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK800 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK820 | 82 Ah 800 A | 315x175x190 mm | More |
| Halfords Advanced AGM 115 | 80 Ah 800 A | 317x175x190 mm | More |
| Lucas Fusion AGM LF115 | 80 Ah 800 A | 315x175x190 mm | More |
| Varta Silver Dynamic AGM F21 | 80 Ah 800 A | 315x175x190 mm | More |
If you’re still unsure which battery fits your BMW 1 Series , 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!