Feature: 1. Compatible Model: 7.4V 2700mAh 20C battery for H501S. It can help your quadcopter fly much higher and quicker, more secure. 2. High Performance: With a 20C discharge rate, this battery delivers consistent power to ensure optimal drone performance and responsiveness. 3. Long Flight Time: The 7.4V 2700mAh 20C lipo battery provides a long battery life, allowing for extended enjoyment of RC drone. 4. Safety: The 7.4V 2700mAh 20C battery is equipped with overcharge and short circuit guard, ensuring the safety of the charging process. 5. Lightweight and Portable: Designed to be lightweight, making it easy to carry. It offers the great balance of weight, power, and performance. Specification: Item Type: 7.4V 2700mAh 20C Battery Material: Li Polymer Weight: Approx. 112g / 4oz Battery Capacity: 2700mAh Li Battery (Shipped with) Voltage: 7.4V. Package List: 1 x 7.4V 2700mAh 20C Battery