The efficiency of this Simonk is 100% N-FET design. Highest accuracy with Crystal Oscillator (Temperature won't affect the PWM operating range like other cheap ESCs). No low voltage cutoff, because any cutoff in a multirotor = crashes.
Specification:
▪ Max Cont. Current: 30A
▪ Peak Current: 40A (10s)
▪ Voltage: 2-3S lix
▪ BEC: 5V/3A
▪ Weight:1g
Purchase Link: https://flyingmachines.in/product/esc-30a-simonk/