When selecting a replacement battery for the Mazda 3 III (BM) produced from 2013 onwards, especially for engines like the Skyactiv-G 100, Skyactiv-G 120, and Skyactiv-G 165, it’s essential to consider several technical parameters to ensure reliable operation and compatibility with the vehicle’s systems. The Mazda 3 III, thanks to its modern engineering, is equipped with start-stop technology, which places higher demands on the car battery compared to conventional ignition systems. This technology helps reduce fuel consumption and emissions by automatically shutting off the engine when the vehicle is stationary and restarting it when needed. As a result, the battery must be capable of frequent start cycles and rapid power recovery, which is why not every battery is suitable for these models.
For the Mazda 3 III (BM), the recommended batteries are of the EFB type, which stands for Enhanced Flooded Battery. EFB batteries are specifically designed for vehicles with start-stop systems and provide better charge acceptance and durability than standard lead-acid batteries. They can handle deeper cycles and more frequent engine starts, making them ideal for cars that experience heavy urban traffic or frequent short trips. In terms of capacity, the optimal range is between 60 and 65 ampere-hours (Ah), while the cold cranking amperage (CCA), which indicates the battery’s ability to start the engine in low temperatures, should be in the range of 520 to 650 amps. These specifications ensure that the battery will perform efficiently throughout various driving conditions and climates.
When it comes to choosing a specific battery, it’s important to pay attention to the physical fitment as well. The Mazda 3 III uses battery mounting types B0 and B00, which are slightly less common compared to the more widespread B13 mounting. This distinction means that while shopping for a new battery, you need to double-check the mounting compatibility to avoid installation issues. Some example models that meet the required specifications include the Exide EL604 and the Varta N65. These are EFB batteries that fit the specified mounting types and deliver the necessary capacity and starting power. However, it’s worth noting that these are just examples of compatible batteries, and other brands may offer similar products that also meet the required standards.
Another interesting aspect is the technological evolution in car batteries, driven largely by the introduction of start-stop systems. EFB batteries represent a significant improvement over traditional SLI (starting, lighting, ignition) batteries, but for even more advanced start-stop systems with regenerative braking, AGM (Absorbent Glass Mat) batteries are sometimes required. In the case of the Mazda 3 III, however, EFB is sufficient and offers a good balance between cost and performance. Choosing the correct battery type is crucial because using a standard battery in a car with start-stop functionality can lead to premature battery failure and may even affect the operation of the start-stop system.
It’s also worth mentioning that the battery’s lifespan and performance depend not only on its technical parameters but also on the vehicle’s usage pattern and maintenance. Regularly driving long enough distances to allow the alternator to recharge the battery, ensuring that electrical consumers are not left on when the engine is off, and monitoring battery health with periodic checks can all contribute to maximizing the battery’s service life. In colder climates, where low temperatures can severely affect battery performance, opting for a battery with a higher CCA value within the recommended range may provide extra peace of mind.
In summary, when replacing the battery in your Mazda 3 III (BM) from 2013 onwards with a Skyactiv-G petrol engine and start-stop system, you should choose an EFB battery with a capacity between 60 and 65 Ah, a cold cranking amperage between 520 and 650 A, and compatible with B0 or B00 mounting types. While models like the Exide EL604 or Varta N65 are good examples, always verify the dimensions and mount before purchase to ensure a proper fit. By following these guidelines and paying attention to both technical and practical aspects, you’ll ensure reliable starting, optimal performance, and longevity for your car’s electrical system.
Mazda 3 in version III (BM) is produced from 2013. We invite you to a list of batteries matching individual engine versions.
Basic parameters of batteries suitable for Mazda 3 (2013-):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B0 |
Mazda 3 III (BM) – petrol engines:
- Skyaktiv-G 100 – with Start-Stop
- Skyaktiv-G 120 – with Start-Stop
- Skyaktiv-G 165 – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Exide EFB EL604 | 60 Ah 520 A | 230x173x222 mm | More |
| Varta Blue Dynamic EFB N65 | 65 Ah 650 A | 232x173x225 mm | More |
For the Mazda 3 III (BM) equipped with the Skyactiv-G 100 Start-Stop, Skyactiv-G 120 Start-Stop, and Skyactiv-G 165 Start-Stop petrol engines, it is essential to select a battery that not only fits the physical constraints of the engine bay but also meets the technical requirements imposed by the start-stop system. These specific Skyactiv-G petrol engines utilize start-stop technology, which places higher demands on the battery due to frequent engine starts and the need to supply power to onboard electronics when the engine is off. Therefore, Enhanced Flooded Batteries (EFB) are recommended for optimal performance and durability in these vehicles.
Among the compatible options, the Exide EFB EL604 offers a capacity of 60 Ah and a cold cranking current of 520 A, with dimensions of 230 mm in length, 173 mm in width, and 222 mm in height. This battery features the standard terminal layout (layout 0) and terminal type 1, making it a suitable fit for these Mazda 3 engines. Another reliable choice is the Varta Blue Dynamic EFB N65, which provides a slightly higher capacity of 65 Ah and a starting current of 650 A. Its dimensions—232 mm long, 173 mm wide, and 225 mm high—are very close to the Exide, ensuring compatibility with the battery compartment. Like the Exide, it features terminal layout 0, terminal type 1, and is designed for B00 mounting, which matches the requirements of the Mazda 3 with these Skyactiv-G petrol engines.
Both the Exide EL604 and Varta N65 are EFB-type batteries, specifically engineered for vehicles with start-stop systems. Their robust construction and enhanced charge acceptance help maintain reliable starting power and prolong battery life, even under the demanding conditions typical for modern Mazda 3 petrol engines with start-stop functionality.
If you’re still unsure which battery fits your Mazda 3 , 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!