Cheap speed controller, Buy Quality lipo 5v directly from China 30a simonk Suppliers: JMT 4pcs/Lot 30A SimonK 2-4S Lipo 5V 3A BEC Brushless ESC Mini Speed Controller for DIY Multicopter Quadcopter Drones
4pcs/lot 30A SimonK 2-4S Lipo 5V 3A BEC Brushless ESC Mini Speed Controller for DIY RC Multicopter 350/450/550/680 Quadcopter 30A SimonK ESC : Description: Item Name: 30A SimonK 2-4S Lipo Support 5V 3A BEC Brushless ESC (Without output cable, soldered directly to female banana plug, same as DJI ) Input Voltage: 2-4s Output Current: 30A (Maximum current: 40A/10S) BEC: 5V 3A Output Signal Frquency: 30-499Hz Firmware: SimonK and Blheli Optional Size about : 37 * 23 * 7 MM Weight about: 23g