Electric speed controller for drone aircraft

Direct current 30A, moment 35A, 40A for 10 seconds. Dimensions/weight: 45*24*11 (mm), 25 grams (including wire). Voltage range: 4V-16V. Number of batteries: 2-4 LiPo (4 LiPo not allowed to output peak). BEC output: 2A continuous, (3A timer). 2LiPo 4-5 mini devices. 3LiPo 3-4 small devices. Protection function: automatically detects 2-3 LiPo, protection voltage 6 volts/9 volts respectively; automatically detects NIMH, and the protective voltage per section is, V.