{"product_id":"hobbywing-xrotor-20a-multirotor-esc","title":"Hobbywing XRotor 20A 4S BLDC Multirotor ESC – 3-4S, 20A\/30A","description":"\u003cdiv style=\"background:#f7f7f7;padding:14px 16px;margin:0 0 20px;border-left:4px solid #E60073;font-size:15px;line-height:1.7;\"\u003e\n  \u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong\u003eQuick Fit Check\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cul style=\"margin:0;padding-left:20px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eContinuous \/ Peak Current:\u003c\/strong\u003e 20A \/ 30A peak\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e 3-4S LiPo\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBEC:\u003c\/strong\u003e No\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMotor Connectors:\u003c\/strong\u003e 3.5mm gold female connectors\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBattery Connector:\u003c\/strong\u003e Not installed\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTypical Application:\u003c\/strong\u003e 330\/450 class multirotors and quadcopters\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAvailable SKUs:\u003c\/strong\u003e 30901004 and 30901012\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHobbywing XRotor 20A 4S BLDC ESC\u003c\/strong\u003e is a dedicated brushless electronic speed controller developed for multirotor aircraft. Rated for \u003cstrong\u003e20A continuous current and 30A peak current\u003c\/strong\u003e, it supports \u003cstrong\u003e3-4S LiPo batteries\u003c\/strong\u003e and is intended primarily for 330\/450 class multirotor and quadcopter power systems.\u003c\/p\u003e\n\n\u003cp\u003eUnlike a general-purpose surface or airplane ESC, the XRotor 20A uses control software developed specifically for the rapid and repeated throttle changes required by multirotor flight. Its key features include fast throttle response, optimized compatibility with multirotor motors, twisted-pair throttle signal wiring, low-resistance MOSFETs and throttle signal frequency support up to 621Hz.\u003c\/p\u003e\n\n\u003cp\u003eThis product page combines two XRotor 20A variants: \u003cstrong\u003e30901004\u003c\/strong\u003e and \u003cstrong\u003e30901012\u003c\/strong\u003e. Their principal electrical ratings, supported battery range, BEC configuration, wiring and intended application are the same. Their physical dimensions and weight differ, so check the selected version against the available mounting space and wiring layout of your aircraft before ordering.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eHobbywing XRotor 20A Specifications\u003c\/h2\u003e\n\n\u003cdiv style=\"overflow-x:auto;margin:12px 0 20px;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;line-height:1.55;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;width:34%;\"\u003eContinuous Current\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e20A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003ePeak Current\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e30A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eBattery\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e3-4S LiPo\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eBEC Output\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNo BEC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eInput Wires\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eRed 18AWG × 150mm × 1; Black 18AWG × 150mm × 1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eMotor Output Wires\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eBlack 18AWG × 75mm × 3\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eInput Connector\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNone\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eMotor Connectors\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e3.5mm gold female connectors\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eThrottle Range Calibration\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eSupported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eProgramming Method\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eTransmitter throttle-stick programming\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eTiming\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eIntermediate \/ High\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eDEO\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNot supported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eOneShot Throttle Mode\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNot supported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eLED Color Programming\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNot supported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eMotor Rotation Programming\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNot supported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;\"\u003eTypical Application\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e330\/450 class multirotors \/ quadcopters\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eChoose the Correct XRotor 20A Version\u003c\/h2\u003e\n\n\u003cp\u003eBoth variants on this page use the same 20A \/ 30A current rating, 3-4S LiPo operating range, no-BEC configuration, wire gauge and 3.5mm female motor connectors. The main differences relevant when ordering are their physical dimensions and weight.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;margin:12px 0 20px;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;line-height:1.55;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;text-align:left;\"\u003eVersion\u003c\/th\u003e\n      \u003cth style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;text-align:left;\"\u003eSKU\u003c\/th\u003e\n      \u003cth style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;text-align:left;\"\u003eDimensions\u003c\/th\u003e\n      \u003cth style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;text-align:left;\"\u003eWeight\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eXRotor-20A Asian Version\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e30901004\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e50.0 × 21.6 × 12.0mm\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eApprox. 15g\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eXRotor-20A Wire Leaded Asian Version\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e30901012\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003e42.0 × 21.6 × 12.0mm\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eApprox. 18.5g\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#f7f7f7;padding:12px 14px;margin:14px 0;font-size:14px;line-height:1.65;border-left:4px solid #E60073;\"\u003e\n  \u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eVersion Note:\u003c\/strong\u003e Select the version according to the exact SKU required for your build. Confirm ESC mounting space, wire routing and connector clearance before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eRapid Throttle Response for Multirotor Flight\u003c\/h2\u003e\n\n\u003cp\u003eThe XRotor 20A uses a dedicated control program developed specifically for multirotor ESC operation. In a multirotor aircraft, the flight controller continuously changes the speed of individual motors to control pitch, roll, yaw and altitude, so rapid ESC response is an important part of stable flight-control performance.\u003c\/p\u003e\n\n\u003cp\u003eHobbywing's XRotor firmware is designed around these frequent throttle changes rather than simply adapting a conventional surface-model or airplane ESC control strategy.\u003c\/p\u003e\n\n\u003cdiv style=\"text-align:left;margin:14px 0 20px;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/001_b2f3eead-1e93-4f27-a1df-31517298a548.png\" alt=\"Hobbywing XRotor 20A 4S multirotor ESC with rapid throttle response for drone motor control\" width=\"1280\" height=\"768\" style=\"max-width:100%;height:auto;display:block;\"\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eSimple Setup with Preset Multirotor Settings\u003c\/h2\u003e\n\n\u003cp\u003eMost operating parameters are preset to simplify installation and setup. The primary user-adjustable parameter on the XRotor 20A is \u003cstrong\u003emotor Timing\u003c\/strong\u003e, which can be set to Intermediate or High using the transmitter throttle stick.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIntermediate Timing is the default setting\u003c\/strong\u003e and is suitable for most motors, generally providing a practical balance between efficiency and operating temperature. High Timing can increase motor RPM in applications that require it, but it can also increase motor temperature. Check motor and ESC temperatures carefully after changing the Timing setting.\u003c\/p\u003e\n\n\u003cdiv style=\"text-align:left;margin:14px 0 20px;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/002_6ec79d21-e223-4cbd-8519-96a6e4ed1eb9.png\" alt=\"Hobbywing XRotor 20A ESC with preset multirotor settings and adjustable motor timing\" width=\"1280\" height=\"768\" style=\"max-width:100%;height:auto;display:block;\"\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eOptimized for Multirotor Brushless Motors\u003c\/h2\u003e\n\n\u003cp\u003eHobbywing developed dedicated XRotor software to provide strong compatibility with the brushless motor types commonly used in multirotor aircraft, including disc-type multirotor motors.\u003c\/p\u003e\n\n\u003cp\u003eESC compatibility should still be evaluated as part of the complete propulsion system. Motor KV, propeller diameter and pitch, battery voltage, motor current draw, cooling and aircraft weight can all affect the electrical and thermal load placed on the ESC.\u003c\/p\u003e\n\n\u003cdiv style=\"text-align:left;margin:14px 0 20px;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/003_5d7c29c6-a71d-4120-a43c-5afbf1445a32.png\" alt=\"Hobbywing XRotor 20A ESC compatibility with brushless multirotor and quadcopter motors\" width=\"1280\" height=\"768\" style=\"max-width:100%;height:auto;display:block;\"\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eTwisted-Pair Throttle Cable Helps Reduce Signal Interference\u003c\/h2\u003e\n\n\u003cp\u003eThe XRotor 20A uses a twisted-pair throttle signal cable designed to reduce interference and crosstalk during signal transmission.\u003c\/p\u003e\n\n\u003cp\u003eThis is particularly useful in multirotor installations where several ESCs, motors, high-current power wires and flight-control electronics may be installed close together. Reducing signal interference helps support stable and reliable communication between the flight controller and ESC.\u003c\/p\u003e\n\n\u003cdiv style=\"text-align:left;margin:14px 0 20px;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/004_519d8ea7-43f1-4ebb-8484-996b1bf54b48.png\" alt=\"Hobbywing XRotor 20A ESC twisted pair throttle signal cable designed to reduce interference\" width=\"1280\" height=\"768\" style=\"max-width:100%;height:auto;display:block;\"\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eLow-Resistance MOSFET Design\u003c\/h2\u003e\n\n\u003cp\u003eThe XRotor 20A uses low-resistance MOSFETs together with a dedicated MOSFET drive design to provide efficient switching and dependable current handling in a compact multirotor ESC.\u003c\/p\u003e\n\n\u003cp\u003eThe ESC is rated for \u003cstrong\u003e20A continuous current and 30A peak current\u003c\/strong\u003e. These ratings are hardware limits rather than automatic targets for every installation. Actual operating current depends on the complete motor, propeller and battery combination as well as airflow and ambient temperature.\u003c\/p\u003e\n\n\u003cdiv style=\"text-align:left;margin:14px 0 20px;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/005_a2e5c241-a64a-42ac-a862-c48115ac6608.png\" alt=\"Hobbywing XRotor 20A multirotor ESC with low resistance MOSFET design for efficient current handling\" width=\"1280\" height=\"768\" style=\"max-width:100%;height:auto;display:block;\"\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eThrottle Signal Frequency up to 621Hz\u003c\/h2\u003e\n\n\u003cp\u003eThe Hobbywing XRotor 20A is compatible with various flight-control systems and supports throttle signal frequencies of up to \u003cstrong\u003e621Hz\u003c\/strong\u003e. This allows frequent throttle updates between the flight controller and ESC during multirotor operation.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#fff7e6;padding:12px 14px;margin:12px 0 16px;border-left:4px solid #f0ad00;font-size:14px;line-height:1.65;\"\u003e\n  \u003cstrong\u003eImportant:\u003c\/strong\u003e Hobbywing notes that throttle signals above 500Hz are non-standard signals. Confirm that the selected flight controller and its throttle output configuration support the intended signal frequency before use.\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align:left;margin:14px 0 20px;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/006_b7db3070-4af4-43ef-80ed-05d1a4f3d0f1.png\" alt=\"Hobbywing XRotor 20A ESC supporting multirotor throttle signal frequency up to 621Hz\" width=\"1280\" height=\"768\" style=\"max-width:100%;height:auto;display:block;\"\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eNo Built-In BEC\u003c\/h2\u003e\n\n\u003cp\u003eThe XRotor 20A is a \u003cstrong\u003eno-BEC multirotor ESC\u003c\/strong\u003e. It does not provide a regulated power output for the flight controller, receiver or other onboard electronics.\u003c\/p\u003e\n\n\u003cp\u003eA suitable separate regulated power source, power module, UBEC or other flight-controller power arrangement must therefore be used where required by the aircraft's electrical system. Always verify the voltage and current requirements of the connected electronics before powering the aircraft.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eThrottle Range Calibration \u0026amp; Timing Programming\u003c\/h2\u003e\n\n\u003cp\u003eHobbywing recommends calibrating the throttle range when first using a new XRotor ESC or when changing to another transmitter or control setup.\u003c\/p\u003e\n\n\u003cp\u003eThe XRotor 20A can also be programmed through the transmitter throttle stick. Motor tones identify the available programming functions, including throttle calibration, Intermediate Timing and High Timing.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;margin:12px 0 20px;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;line-height:1.55;\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;text-align:left;\"\u003eFunction\u003c\/th\u003e\n      \u003cth style=\"background:#E60073;color:#fff;font-weight:700;padding:9px 12px;border:1px solid #ddd;text-align:left;\"\u003eXRotor 20A\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eThrottle Range Calibration\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eSupported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eTransmitter Programming\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eSupported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eIntermediate Timing\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eSupported \/ Default\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eHigh Timing\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eSupported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eDEO\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNot supported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eOneShot Throttle Mode\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNot supported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eLED Color Programming\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNot supported\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eMotor Rotation Programming\u003c\/td\u003e\n      \u003ctd style=\"background:#f2f2f2;padding:9px 12px;border:1px solid #ddd;\"\u003eNot supported\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background:#fff7e6;padding:12px 14px;margin:14px 0;font-size:14px;line-height:1.65;border-left:4px solid #f0ad00;\"\u003e\n  \u003cstrong\u003eSafety:\u003c\/strong\u003e Remove all propellers before throttle calibration, ESC programming or initial power-system testing. A multirotor brushless power system can start unexpectedly during setup if the throttle or signal configuration is incorrect.\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eBuilt-In Protection Functions\u003c\/h2\u003e\n\n\u003cp\u003eThe XRotor 20A includes several protection functions intended to reduce the risk of abnormal motor operation when the ESC detects a problem.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eStart-Up Protection\u003c\/h3\u003e\n\u003cp\u003eIf the ESC cannot start the motor normally within approximately two seconds while throttle is being increased, motor output is stopped. Return the throttle stick to the bottom position before restarting. Possible causes include a poor ESC-to-motor connection or a blocked propeller or motor.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eOverload Protection\u003c\/h3\u003e\n\u003cp\u003eIf the load suddenly rises to an unusually high level, the ESC can cut motor power. Normal operation does not resume until the throttle is returned appropriately. The ESC can also attempt to restart if synchronization between the motor and ESC is lost.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eThrottle Signal Loss Protection\u003c\/h3\u003e\n\u003cp\u003eIf the ESC detects loss of the throttle signal for more than approximately 0.25 second, it cuts motor output. Corresponding output can resume after a normal throttle signal is received again.\u003c\/p\u003e\n\n\u003cp\u003eThese protection functions are safeguards rather than substitutes for correct motor, propeller, battery, wiring and ESC selection.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eDesigned for 330\/450 Class Multirotors\u003c\/h2\u003e\n\n\u003cp\u003eHobbywing identifies the XRotor 20A as a reference ESC for \u003cstrong\u003e330\/450 class quadcopters and multirotors\u003c\/strong\u003e. It is a practical direction for builds where the intended motor and propeller combination remains within the ESC's current limits when operating on a 3S or 4S LiPo battery.\u003c\/p\u003e\n\n\u003cp\u003eThe 330\/450 class recommendation is a reference rather than a universal fitment guarantee. Frame size alone does not determine ESC load. Two aircraft of the same size can produce significantly different current draw depending on motor KV, propeller size and pitch, battery voltage, aircraft weight and flight style.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eWhat to Check Before Buying\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eUse only a 3S or 4S LiPo battery within the specified input range.\u003c\/li\u003e\n  \u003cli\u003eCheck the motor manufacturer's recommended ESC current requirement.\u003c\/li\u003e\n  \u003cli\u003eVerify actual motor current with the intended propeller and battery voltage.\u003c\/li\u003e\n  \u003cli\u003eConfirm there is enough mounting space for the selected 30901004 or 30901012 version.\u003c\/li\u003e\n  \u003cli\u003eProvide adequate airflow and cooling around the ESC.\u003c\/li\u003e\n  \u003cli\u003eCheck the current rating and polarity of the power-distribution system and battery connector.\u003c\/li\u003e\n  \u003cli\u003eConfirm the flight controller's throttle signal type and output frequency.\u003c\/li\u003e\n  \u003cli\u003ePlan a separate regulated power source for the flight controller and receiver because the ESC has no BEC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eHobbywing XRotor 20A Manual\u003c\/h2\u003e\n\n\u003cp\u003eThe official Hobbywing XRotor manual covers motor wiring, throttle-range calibration, Timing programming, the normal start-up process, protection functions and troubleshooting for the XRotor 20A ESC.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/Hobbywing_XRotor_20A_ESC_Manual.pdf?v=1788856147\" target=\"_blank\" rel=\"noopener\" style=\"color:#E60073;text-decoration:underline;font-weight:700;\"\u003eDownload the Hobbywing XRotor 20A ESC Manual\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe manual specifies the XRotor 20A for \u003cstrong\u003e3-4S LiPo operation\u003c\/strong\u003e, with a 20A continuous and 30A peak current rating and no built-in BEC.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eWhat battery does the Hobbywing XRotor 20A support?\u003c\/h3\u003e\n\u003cp\u003eThe XRotor 20A supports \u003cstrong\u003e3-4S LiPo batteries\u003c\/strong\u003e. It should not be operated on 2S, 5S or 6S based on the specification for the XRotor 20A versions sold on this page.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eCan I use the XRotor 20A on 4S?\u003c\/h3\u003e\n\u003cp\u003eYes. The XRotor 20A is specified for both 3S and 4S LiPo operation. The complete motor and propeller combination must still remain within the ESC's current and thermal limits.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eWhat is the current rating of the XRotor 20A?\u003c\/h3\u003e\n\u003cp\u003eIt is rated at 20A continuous current and 30A peak current.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eDoes the Hobbywing XRotor 20A have a BEC?\u003c\/h3\u003e\n\u003cp\u003eNo. The XRotor 20A does not include a BEC. The flight controller, receiver and other onboard electronics require a suitable separate regulated power source according to the aircraft's electrical design.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eDoes the XRotor 20A include a battery connector?\u003c\/h3\u003e\n\u003cp\u003eNo. The battery-side power wires are supplied without an input connector. Install a correctly rated connector or connect the ESC to an appropriate power-distribution system while observing correct polarity and current capability.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eWhat motor connectors are installed?\u003c\/h3\u003e\n\u003cp\u003eThe three motor output wires use 3.5mm gold female connectors.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eCan I program the XRotor 20A?\u003c\/h3\u003e\n\u003cp\u003eYes. Throttle-range calibration and transmitter throttle-stick programming are supported. Motor Timing can be selected between Intermediate and High, with Intermediate Timing used as the default setting.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eDoes the XRotor 20A support OneShot?\u003c\/h3\u003e\n\u003cp\u003eNo. OneShot throttle mode is not supported on these XRotor 20A versions.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eWhat is the difference between SKU 30901004 and 30901012?\u003c\/h3\u003e\n\u003cp\u003eBoth versions share the same principal 20A \/ 30A electrical rating, 3-4S LiPo input range, no-BEC configuration and intended 330\/450 class multirotor application. SKU \u003cstrong\u003e30901004\u003c\/strong\u003e measures approximately 50.0 × 21.6 × 12.0mm and weighs about 15g, while the \u003cstrong\u003e30901012 Wire Leaded version\u003c\/strong\u003e measures approximately 42.0 × 21.6 × 12.0mm and weighs about 18.5g.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eIs the XRotor 20A only for quadcopters?\u003c\/h3\u003e\n\u003cp\u003eThe 330\/450 class specification is given as a reference for quadcopters. Hobbywing's multirotor guidance can also extend to aircraft using other motor counts, but compatibility must be evaluated from the complete propulsion system rather than frame size alone.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:15px;font-weight:bold;margin:14px 0 8px;color:#000;\"\u003eCan the XRotor 20A accept a 621Hz throttle signal?\u003c\/h3\u003e\n\u003cp\u003eYes. Hobbywing states that the ESC supports throttle signal frequencies up to 621Hz. Signals above 500Hz are classified by Hobbywing as non-standard, so flight-controller compatibility and configuration should be confirmed before use.\u003c\/p\u003e\n\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e A battery-side connector is not installed. Battery, motor, flight controller, receiver, external regulated power supply and other power-system components are not included unless otherwise stated in the product options.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:18px;font-weight:700;margin:24px 0 10px;color:#000;border-bottom:1px solid #eee;padding-bottom:6px;\"\u003eMore Hobbywing ESC Options\u003c\/h2\u003e\n\n\u003cp\u003eExplore more \u003ca href=\"https:\/\/chinahobbyline.com\/collections\/hobbywing-escs\" style=\"color:#E60073;text-decoration:underline;font-weight:700;\"\u003eHobbywing ESCs\u003c\/a\u003e for other RC power-system applications, or browse our \u003ca href=\"https:\/\/chinahobbyline.com\/collections\/drone-escs\" style=\"color:#E60073;text-decoration:underline;font-weight:700;\"\u003edrone ESCs\u003c\/a\u003e for more multirotor and UAV electronic speed controllers.\u003c\/p\u003e","brand":"ChinaHobbyLine","offers":[{"title":"Global \/ No Wire","offer_id":50344313225430,"sku":"30901004 GL","price":11.99,"currency_code":"USD","in_stock":true},{"title":"Global \/ With Wire","offer_id":50344313258198,"sku":"30901012 GL","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/B_d3fcbc1d-b57d-4cbe-b122-0ab4b5e27d76.png?v=1788858764","url":"https:\/\/chinahobbyline.com\/he\/products\/hobbywing-xrotor-20a-multirotor-esc","provider":"ChinaHobbyLine","version":"1.0","type":"link"}