The Iauline 21700 40T 4000mAh 4S1P 14.8V 35A XT30/XT60 Battery is specifically designed for quadcopters and drones, offering high performance and durability. With a large capacity of 4000mAh and a voltage of 14.8V, this LiPo battery provides long-lasting power for extended flying time. The 4S1P configuration ensures a reliable and efficient power source, while the XT30/XT60 connector allows for easy compatibility with various RC vehicles. Ideal for enthusiasts looking for a reliable and powerful battery solution for their quadcopter or drone. New - no box