The E-flite 40A Pro Switch-Mode BEC Brushless ESC is a high-quality, innovative and efficient sensorless brushless electronic speed control with an integrated Switch-Mode BEC. It can operate without the need for a separate receiver battery to power your servos and receivers, saving you weight and complication. It is capable of up to 40 amps continuous current when using 3- to 6-series Li-Po battery packs. You can drive up to 7 analog or 6 digital standard-sized servos with the BEC on any recommended input voltage. This ESC also features an exposed, finned heat sink aluminum case with lightweight plastic endcaps. Additional features include safe power-arming along with advanced programmable features such as low voltage cutoff, braking, timing, throttle input range, and more, making this truly a ‘pro series’ speed control.
 | Up to 40A continuous current with proper airflow with 55 amps burst current |
| 5V switch-mode BEC circuit capable of 2.5 amps continuous current |
| Drives up to 7 analog or 6 digital standard-sized servos with the BEC on any recommended input voltage |
| 3S-6S Li-Po or 9- to 18-cell Ni-MH/Ni-Cd input voltage |
| 'Programmable |
| motor |
| braking" |
| Programmable low voltage cut-off with settings for 3S Li-Po (9V), 4-cell Li-Po (12V), 5-cell Li-Po (15V), 6-cell Li-Po (18V), or 70% of battery starting voltage |
| Finned heat sinks |
| Safe power-arm mode prevents accidental starts |
| Programmable soft start for helis and airplanes |
| Auto motor shutdown if signal is lost or there is interference |
| Programmable timing - 5 user selectable ranges for use with a larger variety of brushless motors |
| Programmable throttle input range (1.1ms-1.9ms or 1.2ms-1.8ms) |
| Heli mode for starting the motor with a low speed ratio |
| Optional RS232 Serial Link available for programming (EFLARS232) |
| Pre-wired connectors-E-flite EC3 connectors on battery input and 3.5mm female gold bullets on motor output leads |
