This is the 40A LiPo Brushless ESC with BEC from FlightPower. FEATURES: Built-in governor function and 40A output current is ideal for 450 size 3D helicopters as well as airplanes up to .32 glow size especially those requiring extra servos on the control surfaces Built-in 5V 3A BEC delivers power for multiple servos LiPo, NiMH and NiCd compatible with auto-detection Selectable 0°, 10°, or 20° advanced timing Soft, super-soft start or normal start Three low voltage cutoff settings, and power reduction or power cutoff action User can set up manually, or use the optional FlightPower Programming Card (FPWM0280) or USB Link (FPWM0281) INCLUDES: FlightPower 40A LiPo Brushless ESC with BEC, Universal Radio Connector with 11.8" (300mm) lead, 14AWG battery leads and 16 AWG motor leads SPECS: Output Current: 40A continuous max., 60A surge max. Input Voltage: 6-18 NiCd/NiMH cells 2-6 LiPo cells auto-detecting Max. Output Power: 840 watts BEC: 5V/3.0A linear Operating Frequency: 8kHz fixed On Resistance: 0.0031 ohms Timing angle: 0, 10, 20° selectable Low voltage cutoff: 3.0, 3.2, 3.4V LiPo, selectable 0, 50, or 60% of NiMH start voltage, selectable Low Voltage Action: Power reduction or power cutoff Soft Start: Normal, soft, super-soft Rotation Direction: Forward Brake: On/Off Radio Connector: Universal, with 11.8" (300mm) lead Battery Leads: 14AWG with silicone insulation multi strand, stripped and tinned, 4.72" (120mm) in length Motor Leads: 16AWG with silicone insulation multi strand, stripped and tinned, 2.95" (75mm) in length Dimensions: 2.05 x 1.10 x 0.55" (52 x 28 x 14mm) Weight: 1.13oz. (32g) cnh 6/19/08 ir/jxs updt jxs 09/15/10