The Varta Blue Dynamic EFB series is designed to meet the growing energy demands of modern vehicles, especially those equipped with Start-Stop systems. EFB (Enhanced Flooded Battery) technology ensures significantly greater cycle stability compared to conventional flooded batteries. These batteries are more durable when exposed to frequent charge and discharge cycles, making them ideal for urban driving conditions where engines are regularly turned off and restarted. With optimized grid designs and active material composition, Blue Dynamic EFB batteries deliver consistent performance, faster recharging, and longer service life. This series is targeted at vehicles without regenerative braking but still requiring a robust power supply due to increased onboard electronics and frequent short-distance trips.
The Varta N70 is a reliable representative of the Blue Dynamic EFB range, offering a balanced mix of power, durability, and efficiency. With a capacity of 70 Ah and a cold cranking current of 760 A, it provides strong starting performance even in cold climates, while also delivering stable power to the vehicle’s electronics. The N70 is built using EFB technology, which is essential for vehicles with basic Start-Stop functionality. Unlike traditional flooded batteries, it is engineered to endure repeated partial discharges and fast recharges. This makes the N70 particularly suitable for cars that frequently drive short distances or endure start-heavy usage patterns. Additionally, the battery’s layout includes terminal type 1 and layout 0, common among European vehicles.
Physically, the N70 measures 278 mm in length, 175 mm in width, and 190 mm in height, which corresponds precisely to the L3 standard size in the European DIN classification. This format is widely used across a broad range of mid-sized and larger passenger cars. The B13 base hold-down further confirms its compatibility with many European car models, allowing for secure installation within standard battery trays.
What makes the N70 stand out in its segment is its higher cold cranking amperage (760 A) compared to similar EFB batteries. For example, the Bosch S4 E08 offers the same 70 Ah capacity but delivers 650 A, while the Varta E45 from the same series provides 650 A as well. The Exide EL700 comes closer with 720 A, and the Halfords EFB 096 delivers 700 A. However, none of these quite match the N70’s peak output, making it an excellent choice for those who require higher starting power — for example, in colder climates or vehicles with slightly more demanding electrical systems.
The N70 also maintains its performance over time thanks to improved internal design and manufacturing quality, which are hallmarks of Varta’s production standards. Its construction helps minimize internal resistance, which translates to better charge acceptance and longer operational life. Since it’s a sealed maintenance-free battery, it also offers peace of mind by eliminating the need to top up water levels — a common concern in older battery types.
In summary, the Varta Blue Dynamic EFB N70 is a well-rounded, high-performance battery built for modern vehicles with Start-Stop technology. Its combination of high cold cranking power, long cycle life, and compatibility with the L3 format makes it a strong contender in the EFB category. When compared with similar offerings from Bosch, Exide, and Lucas, the N70’s standout features lie in its robust power output and premium build quality — elements that can make a significant difference in real-world performance and longevity.
The Varta N70 Blue Dynamic EFB is a lead-acid automotive battery with dimensions measuring 278mm in length, 175mm in width, and 190mm in height. Technically, it has a nominal capacity of 70 Ah (Ampere-hours), indicating the amount of charge it can deliver over a period of time. Additionally, it features a cold cranking amp (CCA) rating of 760 A, a measure of the battery’s ability to start an engine in cold temperatures.
The N70 employs Enhanced Flooded Battery (EFB) technology, which is an advancement over standard flooded lead-acid batteries. EFB technology typically offers improved charge acceptance and longevity, making it suitable for vehicles with high electrical demand or start-stop systems.
The battery’s layout includes a positive terminal on the right side and incorporates a base hold-down type B13. This configuration is commonly used in automotive applications, facilitating compatibility and installation in various vehicle models.
Overall, the Varta N70 Blue Dynamic EFB battery’s design and specifications reflect its application in automotive settings, with an emphasis on reliability and performance under varying operating conditions.
