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E-Flite 40amp ESC w/switch BEC (3S-6S)

  • Up to 40-amp continuous current with proper air flow, with 55-amp burst current (15 seconds)
  • 5-volt Switch-Mode BEC circuit capable of 2.5-amp continuous current on any recommended input voltage
  • Drive up to 7 analog or 6 digital standard-sized servos with the BEC on any recommended input voltage 3–6S Li-Po, 9- to 18-cell Ni-Cd/Ni-MH input voltage
  • Finned heat sinks
  • Programmable motor braking
  • Safe power-arm mode prevents accidental starts
  • 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
  • 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 large variety of brushless motors
  • Programmable throttle input range (1.1–1.9 ms or 1.2–1.8 ms)
    Heli mode for starting the motor with a low speed ratio
  • Utilizes new smaller MOSFETs technology to save weight
  • Radio System Power On/Off Switch
  • Pre-wired connectors—E-flite EC3 on battery input and 3.5mm female gold bullets on motor output leads

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.

Servo Ratings with BEC Enabled:

Drive up to 7 analog or 6 digital standard-sized servos with the BEC on any recommended input voltage. This also includes up to 7 standard analog or 5 standard digital and 1 retract servo, perfect for 25-sized warbird conversions.

Brake: Yes - Programmable
Continuous Maximum Current: 40A with reasonable cooling
Input Voltage: 10.8V - 22.2V
Input Connector Types: 13AWG with E-flite EC3 Connector
Output Connector Types: 13AWG with 3.5mm Female Gold Bullet Connectors
Momentary Peak Current: 55A (15 sec)
Length: 2.70 in (68.6mm)
Width: 1.30 in (33.0mm)
Height: 0.50 in (12.7mm)
Weight: 2.2 oz (62g)
Wire Gauge: 13AWG


Part Number: EFLA1040
Price:   $74.99 
Quantity: