The Hobbywing Flyfun Brushless ESC 20A is a versatile electronic speed controller perfect for both airplanes and helicopters running on AC power. With a constant current rating of 20A and a peak current of 30A, it ensures reliable performance during flight. This ESC is compatible with 2 to 4 cell LiXX batteries and comes with a BEC rated at 5.2V and 2.5A to provide stable power to on-board electronics. **Features:** - **Compact Size:** Ideal for models with limited space; dimensions: 25mm (length) x 15mm (width) x 5mm (height). - **Lightweight:** Weighing only 13g, it’s perfect for lightweight model setups. - **Unidirectional Control:** Supports one-way control that is efficient for simple applications. - **Brake Functionality:** Equipped with a brake function for precise control. - **Programmable:** Allows customization of parameters to suit individual needs. - **Sensor Input Omission:** Simplifies installation and operation with no sensor inputs required. This ESC is an excellent choice for model enthusiasts looking for a reliable and functional speed controller.