Specifications:

40A Brushless ESC 
continuous current:40A 
burst current (10A): 55A 
battery(cell): 2~3 
BEC output: 3A/5V 

MR.RC 40A  Brushless ESC Electronic Speed Controller For Multirotor

Specifications 
1.Output capacity: Continuous current 40A, short-time current 55A (less than 10 seconds)
2 Power input:  2-3 cells lipo battery pack or 5-9 cells NiMH / NiCd battery pack
3 BEC Output: 5V / 3A (linear regulator mode -linear mode)
4 Maximum speed: 2-pole motors 210 000 r / min, 6-pole motor 70000r / min, 12 pole motor 35000r / min
5 Size: 68mm (length) * 25mm (W) * 8mm (high)
6 Weight: 39g
7 ESC full length: 452mm

Features
1.Safe power on: When powered on, regardless of where is the position of throttle, motor will not start immediately, to avoid injury;
2 Throttle range calibrated: to adapt the throttle range of differences remote control, improving the linearity of throttle response; 
3 Programmable Items (available for throttle stick or LED parameter setting card settings.

• Brake setting: No brake /  brake
• Battery type: Lithium Battery / NiMH
• Low Voltage Protection Mode: Soft Shutdown / hard shutdown
• Low Voltage Protection Threshold: low / medium / high
• Start Mode: Normal / Soft / Super-soft and starting
• Timing: low / medium / high
• Restore factory defaults

4 comprehensive protection functions: 
undervoltage protection: the program is set by the user when the battery voltage is lower than the protection voltage, ESC automatically reduces the output power.

• Overvoltage protection: if input voltage exceeds the input range, it will not be allowed to start, automatic protection, also issued rapid "beep beep" alarm sound
• Overheat protection: Built-in temperature detection, reduces the output power if the temperature is too high;
• remote control signal loss protection: reduce power after the remote control lose signal for one second, two seconds the signal output is closed.