This bundle includes 2 Spark Intelligent Flight Battery. The Spark Intelligent Flight Battery has a capacity of 1480 mAh and a voltage of 11. 4 V. It enables 16 minutes of flight on a single charge. Spark uses a high energy density LiPo battery for optimal performance. 12 intelligent protection functions help deliver safe flight. Additionally, Spark's battery estimates remaining flight time, letting you know when to land in real-time.