40A ESC: Ultimate 2

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-size servos with the BEC on any recommended input voltage. This ESC also features an exposed, finned heat sink aluminum case with lightweight plastic end-caps. 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 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-size 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 MOSFET technology to save weight
• Radio system power on/off switch
• Pre-wired connectors—E-flite® EC3™ connector on battery input and 3.5mm female gold bullets on motor output leads

• Brake:: Yes - programmable
• Continuous Maximum Current:: 40A with reasonable cooling
• Input Voltage:: 10.8–22.2V
• 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 (62 g)
• Wire Gauge:: 13AWG

• Brand: E Flite
• Part No: EFLA1040U
• Barcode: 605482586839
• Fitment: Standard Part