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What is the difference between a 24F and 27F battery?

The main difference between a 24F and 27F battery lies in their physical size and capacity. Both are lead-acid batteries commonly used in various applications, but they have distinct specifications that make them suitable for different needs.


24F Battery


A 24F battery is a smaller and more compact lead-acid battery, typically measuring around 10 inches long, 6.8 inches wide, and 7.8 inches tall. The "F" in 24F stands for "Flat", indicating that the battery has a flat top design. 24F batteries are known for their relatively low capacity, usually ranging from 50 to 70 amp-hours (Ah). These batteries are commonly used in applications such as motorcycles, ATVs, lawn mowers, and small marine vehicles.,p>

27F Battery


In contrast, a 27F battery is a larger lead-acid battery, measuring around 12.1 inches long, 6.8 inches wide, and 7.8 inches tall. The "F" in 27F also stands for "Flat", similar to the 24F. However, the 27F battery has a higher capacity, typically ranging from 70 to 100 Ah. This increased capacity makes the 27F battery more suitable for larger vehicles, such as cars, trucks, and RVs, as well as for applications that require more power, such as marine equipment and heavy-duty machinery.


Key Differences



  • Size: 24F batteries are smaller and more compact, while 27F batteries are larger in physical dimensions.

  • Capacity: 27F batteries have a higher amp-hour (Ah) rating, providing more power and runtime compared to 24F batteries.

  • Applications: 24F batteries are typically used in smaller vehicles and equipment, while 27F batteries are more suitable for larger vehicles and applications that require more power.


In summary, the primary differences between 24F and 27F batteries lie in their physical size and capacity, which ultimately determine their suitability for different applications. Understanding these distinctions can help you choose the right battery for your specific needs.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.