{"product_id":"hobbywing-5a-ubec-v2-air-2-8s-lipo","title":"Hobbywing 5A UBEC V2 Air 5V\/6V\/7.4V External Switching BEC for 2-8S LiPo","description":"\u003cp\u003e\u003cimg style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/1_21072488-de9a-4cd1-a4eb-7adbc3a7138e.jpg\" alt=\"Hobbywing 5A UBEC V2 Air external switching BEC for 2-8S LiPo RC aircraft\"\u003e\u003c\/p\u003e\n\n\n\n\u003cp\u003eThe \u003cstrong\u003eHobbywing 5A UBEC V2 Air 5V\/6V\/7.4V External Switching BEC for 2-8S LiPo\u003c\/strong\u003e is an external switch-mode DC voltage regulator designed to provide stable power for receivers, servos, gyros, and other onboard electronics in RC aircraft and custom RC models. It takes power from a \u003cstrong\u003e2S to 8S LiPo battery\u003c\/strong\u003e and converts it into a safe receiver-side output voltage.\u003c\/p\u003e\n\n\u003cp\u003eThis UBEC uses an efficient DC-DC regulator chip with a conversion efficiency of more than 90%. Compared with a traditional linear BEC, the switching design helps reduce wasted heat and is better suited for higher-voltage RC power systems.\u003c\/p\u003e\n\n\u003cp\u003eWith \u003cstrong\u003e5.0V, 6.0V, and 7.4V adjustable output\u003c\/strong\u003e, 5A continuous current, 15A instantaneous current, overcurrent protection, output short-circuit protection, and overheat protection, this Hobbywing UBEC is a practical external BEC upgrade for fixed-wing aircraft, OPTO ESC setups, and servo-heavy RC builds.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eProduct Specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width: 100%; display: block; overflow-x: auto; border-collapse: separate !important; border-spacing: 0 8px !important; font-size: 14px; line-height: 1.3;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eProduct Name\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003eHobbywing 5A UBEC V2 Air External Switching BEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003eUBEC-5A-V2-Air 2-8S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003e30607000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eBEC Type\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003eExternal switch-mode UBEC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eInput Voltage\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003e2-8S LiPo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003e5.0V \/ 6.0V \/ 7.4V, 3 options adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eOutput Current\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003eContinuous 5A, instantaneous 15A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eEfficiency\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003eMore than 90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eProtection Functions\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003eOvercurrent protection, output short-circuit protection, overheat protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eRecommended Use\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003eRC fixed-wing aircraft, receiver and servo power systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003e50 × 17 × 10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%; background: #E60073; color: #fff; font-weight: bold; padding: 12px; border-radius: 6px 0 0 6px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"background: #f7f7f7; padding: 12px; border-radius: 0 6px 6px 0;\"\u003e21g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5A external UBEC:\u003c\/strong\u003e Provides stable receiver and servo power for RC aircraft and other models that need a separate BEC solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-8S LiPo input:\u003c\/strong\u003e Supports a wide input range for medium and larger RC power systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.0V \/ 6.0V \/ 7.4V adjustable output:\u003c\/strong\u003e Three voltage options make it suitable for different receiver, servo, and HV servo setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15A instantaneous current:\u003c\/strong\u003e Helps handle short current spikes from servo movement and receiver-side load changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-efficiency DC-DC regulator:\u003c\/strong\u003e Conversion efficiency of more than 90% helps reduce heat compared with traditional linear BEC designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection design:\u003c\/strong\u003e Includes overcurrent protection, output short-circuit protection, and overheat protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal shield structure:\u003c\/strong\u003e Helps with heat dissipation and reduces electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED status indicator:\u003c\/strong\u003e The red LED indicates whether the UBEC is outputting normal voltage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eWhen Should You Use This Hobbywing 5A UBEC?\u003c\/h2\u003e\n\n\u003cp\u003eUse this Hobbywing 5A UBEC when your aircraft or RC model needs stronger and more stable receiver power than the ESC’s built-in BEC can provide. It is especially useful for fixed-wing aircraft with multiple servos, higher-voltage LiPo systems, OPTO ESC setups, or models using compatible HV servos.\u003c\/p\u003e\n\n\u003cp\u003eFor larger aircraft or servo-heavy setups, relying only on a small internal BEC may create heat or voltage stability issues. A dedicated external switching BEC helps separate receiver and servo power from motor control, giving the electronics a more reliable power path.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eOutput Voltage Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.0V output:\u003c\/strong\u003e Suitable for many standard receiver and servo setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.0V output:\u003c\/strong\u003e Suitable for receivers and servos that support 6V operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7.4V output:\u003c\/strong\u003e Suitable only for compatible HV receivers and HV servos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e When using 7.4V output, 3S LiPo or higher input is recommended for more stable output. With 2S LiPo, the UBEC may not maintain stable 7.4V output as battery voltage drops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eInstallation Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eConnect the UBEC input wires in parallel with the main battery power supply.\u003c\/li\u003e\n\u003cli\u003ePlug the UBEC output lead into an idle receiver channel or receiver power input port.\u003c\/li\u003e\n\u003cli\u003eIf your brushless ESC has no built-in BEC, no ESC-side BEC change is required.\u003c\/li\u003e\n\u003cli\u003eIf your brushless ESC already has a built-in BEC, disconnect the ESC’s BEC output before using this external UBEC.\u003c\/li\u003e\n\u003cli\u003eKeep the UBEC more than 5cm away from the receiver to reduce possible electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eAlways check your receiver and servo voltage ratings before selecting 5.0V, 6.0V, or 7.4V output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eUser Manual\u003c\/h2\u003e\n\n\u003cp\u003eFor wiring diagrams, voltage adjustment instructions, safety notes, and setup guidance, please refer to the official \u003ca style=\"color: #E60073; text-decoration: underline;\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/Hobbywing_UBEC_5A_User_manual.pdf?v=1783417710\" target=\"_blank\"\u003eHobbywing 5A UBEC user manual\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eRecommended Applications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eRC fixed-wing aircraft using 2S to 8S LiPo power systems\u003c\/li\u003e\n\u003cli\u003eAirplanes with multiple servos or higher receiver-side power demand\u003c\/li\u003e\n\u003cli\u003eOPTO ESC systems that require a separate BEC\u003c\/li\u003e\n\u003cli\u003eHV servo setups that support 7.4V receiver power\u003c\/li\u003e\n\u003cli\u003eCustom RC aircraft builds where stable external BEC power is required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more ESC and power-system options, explore our \u003ca style=\"color: #E60073; text-decoration: underline;\" href=\"https:\/\/chinahobbyline.com\/collections\/hobbywing-escs\"\u003eHobbywing ESCs\u003c\/a\u003e, \u003ca style=\"color: #E60073; text-decoration: underline;\" href=\"https:\/\/chinahobbyline.com\/collections\/esc-programmers-accessories\"\u003eESC Programmers \u0026amp; Accessories\u003c\/a\u003e, and \u003ca style=\"color: #E60073; text-decoration: underline;\" href=\"https:\/\/chinahobbyline.com\/collections\/external-bec-ubec\"\u003eExternal BEC \u0026amp; UBEC\u003c\/a\u003e collections.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 18px; font-weight: bold; margin: 24px 0 10px; color: #000; border-bottom: 1px solid #eee; padding-bottom: 6px;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size: 16px; font-weight: bold; margin: 18px 0 8px; color: #000;\"\u003eWhat is the Hobbywing 5A UBEC V2 Air used for?\u003c\/h3\u003e\n\u003cp\u003eIt is used to provide stable power to the receiver, servos, gyro, and other onboard electronics. It is useful when the ESC has no built-in BEC, when the internal BEC is not strong enough, or when a separate receiver-power solution is preferred.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 16px; font-weight: bold; margin: 18px 0 8px; color: #000;\"\u003eCan this UBEC be used with an 8S LiPo battery?\u003c\/h3\u003e\n\u003cp\u003eYes. This Hobbywing 5A UBEC supports 2-8S LiPo input, making it suitable for many medium and larger RC aircraft power systems.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 16px; font-weight: bold; margin: 18px 0 8px; color: #000;\"\u003eShould I use 5V, 6V, or 7.4V output?\u003c\/h3\u003e\n\u003cp\u003eUse 5V for standard receiver and servo systems, 6V for electronics that support 6V operation, and 7.4V only for compatible HV receivers and HV servos. Always check your electronics specifications before changing the output voltage.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 16px; font-weight: bold; margin: 18px 0 8px; color: #000;\"\u003eCan I use 7.4V output with a 2S LiPo battery?\u003c\/h3\u003e\n\u003cp\u003eIt is not recommended if you need stable 7.4V output. As the 2S LiPo voltage drops during use, the UBEC may not be able to maintain a stable 7.4V output. For 7.4V output, 3S LiPo or higher input is recommended.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 16px; font-weight: bold; margin: 18px 0 8px; color: #000;\"\u003eDo I need to disable the ESC’s built-in BEC?\u003c\/h3\u003e\n\u003cp\u003eYes, if your ESC already has a built-in BEC and you want this external UBEC to power the receiver, the ESC’s BEC output should be disconnected first. This avoids powering the receiver from two BEC outputs at the same time.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 16px; font-weight: bold; margin: 18px 0 8px; color: #000;\"\u003eIs this product an ESC?\u003c\/h3\u003e\n\u003cp\u003eNo. This product is not an ESC and does not control the motor. It is an external switching BEC used to power the receiver, servos, gyro, and other low-voltage electronics.\u003c\/p\u003e","brand":"ChinaHobbyLine","offers":[{"title":"Global","offer_id":48553564274902,"sku":"UBEC-5A-V2-Air  2-8S GL","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/0617\/0582\/files\/UBEC-5A-Air_2048x_9e91bf51-2851-4b38-b303-795fdf597b46.webp?v=1783418344","url":"https:\/\/chinahobbyline.com\/sv\/products\/hobbywing-5a-ubec-v2-air-2-8s-lipo","provider":"ChinaHobbyLine","version":"1.0","type":"link"}