40-Amp Pro Switch-Mode BEC Brushless ESC
Key Features
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
3û6S 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 timingù5 user-selectable ranges for use with a large variety of brushless motors
Programmable throttle input range (1.1û1.9 ms or 1.2û1.8 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
Optional RS232 Serial Link available for programming (EFLARS232)
Pre-wired connectorsùE-flite EC3 on battery input and 3.5mm female gold bullets on motor output leads

Overview
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 æpro seriesÆ speed control.

Specs
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)
Dimensions (WxLxH): 33 x 68 x 13mm (1.30 x 2.70 x 0.50 in)
Weight: 62 g (2.2 oz)
Wire Gauge: 13AWG