The Lucas Fusion EFB series is engineered for modern vehicles equipped with start-stop technology, offering enhanced durability and longer life cycles compared to standard flooded batteries. EFB (Enhanced Flooded Battery) technology is specifically designed to handle more frequent engine starts, partial states of charge, and deeper discharge cycles that are typical in urban driving environments. Batteries in the Fusion EFB line provide a cost-effective solution for drivers who need a high-performance battery that supports energy-saving technologies without the added expense of AGM construction. Built to withstand the increased demands of micro-hybrid systems, Lucas Fusion EFB batteries are ideal for vehicles that prioritize both performance and fuel efficiency.
The Lucas LE249 is a powerful battery from the Fusion EFB series, delivering 80 Ah of capacity and 740 A of cold cranking power. These specifications make it suitable for medium to large vehicles with high electrical loads, including models equipped with modern start-stop systems, regenerative braking, and numerous onboard electronics. The LE249 is designed to deliver quick and consistent engine starts, even in low temperatures, and to maintain steady performance during demanding stop-and-go driving typical of city traffic.
With dimensions of 302 mm (length) x 175 mm (width) x 225 mm (height), the LE249 closely matches the D31 size category, often seen in European vehicles that require a slightly longer battery for greater capacity. Its height of 225 mm aligns it with standard European battery heights, as opposed to taller and narrower Asian types. The width and length are also in line with conventional formats used in vehicles that demand increased reserve capacity and higher starting power, making the LE249 suitable for a wide range of passenger cars, vans, and light-duty commercial vehicles.
A notable feature of the LE249 is its B1 hold-down configuration, which means the battery has mounting ledges only along the longer sides. This is less common than the more widespread B13 (which has ledges around the full perimeter), so users must ensure compatibility with their vehicle’s battery tray. The terminal layout 0 and terminal type 1 (standard European posts) ensure straightforward installation in most European vehicles, although checking polarity and cable length is always recommended before replacement.
When compared with similar EFB batteries, such as the Varta Blue Dynamic EFB N85 (85 Ah, 800 A, 306x173x225 mm), the Lucas LE249 offers slightly lower capacity and cranking performance but remains an excellent value. It is particularly attractive for drivers who want a reliable EFB battery without the premium cost typically associated with OEM brands like Varta. The LE249 offers solid performance where it counts—stable voltage delivery, faster recovery during short trips, and higher endurance during stop-start cycles.
In conclusion, the Lucas Fusion EFB LE249 is a strong contender in the EFB segment, offering a balanced mix of capacity, starting power, and durability for vehicles with start-stop systems. With its D31-like size and less common B1 mounting, it is best suited for drivers who need a high-performance battery that fits specific tray dimensions. Its resistance to cycling stress and readiness for frequent engine starts make it a smart choice for modern cars navigating daily urban traffic.