Durable. 18A Brushless ESC made of electronic components, upgraded parts, good performance and durable. Multiple protection functions: low voltage protection,temperature protection,out of control protection Replacement. RC replacements for your old or broken one. Easy Install. Simple,easy and convenient to install and use. controller for RC Quadcopter/RC Airplanes and others. Specification: Continuous current 40A, instant 45A, 45A for seconds. voltage range:4V-16V Number of batteries: 2-4LIPO (4LIPO does not allow BEC output) BEC output: Continuous 2A, (instant 3A) 2LIPO 4-5 Micro Servo 3LIPO 3-4 Micro Servo Protective function: Automatically select 2-3LIPO, the protection voltage is 6V/9V; NIMH is automatically selected, and the protection voltage of each section is 0.8V; Temperature protection, 110 degree surface temperature shutdown; Out of control protection, no signal stops second. Approx.6.5cmx2.6cm/2.56inx1.02in Package Includes: 1 Brushless ESC Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on line shopping!