--- product_id: 139011829 title: "QWinOut 2-4S 30A RC Brushless ESC Simonk Firmware Electric Speed Controller with 5V 3A BEC with 3.5mm Female Banana Bullet for 2 to 4s Lipo Battery, DIY Multicopter Quadcopter (30A,1 pcs)" brand: "qwinout" price: "104.35 DT" currency: TND in_stock: true reviews_count: 12 category: "Q Win Out" url: https://www.desertcart.tn/products/139011829-qwinout-2-4s-30a-rc-brushless-esc-simonk-firmware-electric store_origin: TN region: Tunisia --- # 30A continuous current 2-4S LiPo compatible 3.5mm female banana connector QWinOut 2-4S 30A RC Brushless ESC Simonk Firmware Electric Speed Controller with 5V 3A BEC with 3.5mm Female Banana Bullet for 2 to 4s Lipo Battery, DIY Multicopter Quadcopter (30A,1 pcs) **Brand:** qwinout **Price:** 104.35 DT **Availability:** βœ… In Stock ## Summary > πŸš€ Elevate your multicopter game with plug-and-play power and precision control! ## Quick Answers - **What is this?** QWinOut 2-4S 30A RC Brushless ESC Simonk Firmware Electric Speed Controller with 5V 3A BEC with 3.5mm Female Banana Bullet for 2 to 4s Lipo Battery, DIY Multicopter Quadcopter (30A,1 pcs) by qwinout - **How much does it cost?** 104.35 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/139011829-qwinout-2-4s-30a-rc-brushless-esc-simonk-firmware-electric) ## Best For - qwinout enthusiasts ## Why This Product - Trusted qwinout brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Noise-Free Flight:** Military-grade capacitors and low-resistance PCB minimize RF interference for smooth control. - β€’ **Plug & Play Power:** Pre-flashed SimonK firmware means zero setup fussβ€”just connect and fly. - β€’ **Robust Current Handling:** 30A continuous with 40A burst for aggressive throttle response and peak performance. - β€’ **Universal Battery Support:** Works seamlessly with 2-4S LiPo or 5-12 cell NiCd/NiMh batteries for versatile builds. - β€’ **Smart Safety & Calibration:** Built-in arming safety, throttle calibration, and full protection features keep your drone mission-ready. ## Overview The QWinOut 30A Brushless ESC with SimonK firmware is a lightweight, compact speed controller designed for 2-4S LiPo and NiCd/NiMh batteries. Featuring a 3.5mm female banana connector for reliable connections, it delivers 30A continuous current with 40A burst capacity. Military-grade capacitors and a low-resistance PCB reduce RF noise, ensuring stable flight. Pre-programmed for immediate use, it includes advanced safety features like arming protection, throttle calibration, and multiple programmable settings, making it ideal for DIY multicopters and quadcopters. ## Description NOTE: 1. ESC was soldered with 3.5mm Female banana connectors, effectively avoid welding problems; 2. have set up the Simonk Firmware program.Brand: QWinOut Working current: 30A/40A (Optional on my shop) Output: 30A Version: Continuous 25A, Burst 40A up to 10 Secs 40A Version: Continuous 40A, Burst 55A not down to 10 Secs Input Voltage:2-4 cells lithium battery or 5-12 cells NiCd/NIMh batteryBEC:5V 3AMax Speed:210,000rpm for 2 Poles BLM, 70,000rpm for 6 poles BLM, 35,000rpm for 12 poles BLM.(BLM: BrushLess Motor)Weight:about 25gCompatible for: DIY FPV KK MK MWC RC Quadcopter Hexacopter Multi-Rotor Aircraft;210 360 450 Helicopter;380 f450 f550 and other four-axis six-axis fixed-wing drone.Features1.Safety Arming Feature: Regardless the throttle stick position, the motor will not spin after battery connected.2.Throttle Calibration: Throttle range can be configured to provide best throttle linearity, fully compatible with all market available transmitters.3.Programmable Items:Brake Setting:brake enabled/brake disabled. Battery Type:Li-xx(Li-ion or LiPo)/Ni-xx(NiMh or NiCd). Low Voltage Protection Mode(Cutoff Mode):Gradually reduce the output power/Cutoff the output power. Low Voltage Cutoff Protection Threshold (Cutoff Threshold):low/medium/high. Start Mode: normal/soft/very soft. Timing:low/medium/high. Reset: reset all the programmable items to their default settings.4.Full Protection Features: Low voltage cutoff protection/Over-heat protection/Throttle signal lost protection. Suggestion:Do a throttle range adjustment before taking off as following steps:1.Connect ESC/motor/receiver2.Push the remote control throttle to maximum3.Connect power 4.Hear the regular sound of D- D- D……, unplug battery5.Reconnect power and hear DD quickly sound 6.Pull the throttle to minimum7.D sound once, calibration successful Review: DON'T FOLLOW SELLER INSTRUCTIONS FOR CALLIBRATING - So when I first tried to use these they wouldn't work at all. My main problem turned out to be not having a common ground because I had different power sources for my Arduino controller and the ESC's/Motors. They all work great and don't seem to have any heating issues yet. Used with 935kv motors and 3S battery, working well so far FOR CALLIBRATING: 1. Have motor/reciever sending data 2. Throttle up to full 3. Power the ESC/Motor 3. You should hear 3 D's (means getting power) followed by 1 D (means getting HIGH signal) 4. Lower throttle to the minimum 5. You should hear 2 D's -- after that you should be good to throttle up Review: Ok but tricky - I initially left a bad review, because after connecting this to an Arduino and trying to activate a motor with a basic servo sketch, it did nothing other than make the ESC beep. Then I did some more research and learned these ESCs have a startup routine needed to "arm" them, AND that I needed to power cycle the ESC after each Arduino update. After doing both of those, then my servo sketch worked. ## Features - NOTE: 1. Since 2020.07.05, this items was soldered with 3.5mm Female banana connectors, effectively avoid welding problems; 2. We have set up the program, the ESC do not need additional program - Input voltage:2-4 S; BEC: 5V 3A; Working current: 30A / 40A (Optional on my shop) - Universal SimonK Firmware 30A/40A ESC Brushless Speed Controller, super simple. Small size combined with light weight for easy installation. (30A/40A is optional on my shop) - Military standard capacitor of extreme low resistance increases the ability of prevention of unwanted RF noise during flying. Extreme low resistance PCB is helpful for getting a super current endurance capability. - Microprocessor uses separate voltage regulator IC, with good anti-jamming capability. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07QJYN7BT | | Age Range Description | Adult | | Best Sellers Rank | #268,938 in Toys & Games ( See Top 100 in Toys & Games ) #310 in Radio Control Vehicle Speed Controls | | Brand Name | QWinOut | | Color | 30a,1 Pcs | | Customer Reviews | 4.0 out of 5 stars 193 Reviews | | Educational Objective | Game, play | | Indoor Outdoor Usage | Outdoor | | Is Assembly Required | Yes | | Manufacturer | QWinOut | | Manufacturer Minimum Age (MONTHS) | 168.00 | | Manufacturer Part Number | M18203/M32203 | | Material Type | Metal, Plastic | | Number of Players | 1 | | Operation Mode | Manual | | Power Source | Battery Powered | | Supported Battery Types | Lithium or NiCd/NiMh battery pack | | Theme | Industrial | ## Images ![QWinOut 2-4S 30A RC Brushless ESC Simonk Firmware Electric Speed Controller with 5V 3A BEC with 3.5mm Female Banana Bullet for 2 to 4s Lipo Battery, DIY Multicopter Quadcopter (30A,1 pcs) - Image 1](https://m.media-amazon.com/images/I/51tOxXpPfML.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ DON'T FOLLOW SELLER INSTRUCTIONS FOR CALLIBRATING *by O***T on August 8, 2021* So when I first tried to use these they wouldn't work at all. My main problem turned out to be not having a common ground because I had different power sources for my Arduino controller and the ESC's/Motors. They all work great and don't seem to have any heating issues yet. Used with 935kv motors and 3S battery, working well so far FOR CALLIBRATING: 1. Have motor/reciever sending data 2. Throttle up to full 3. Power the ESC/Motor 3. You should hear 3 D's (means getting power) followed by 1 D (means getting HIGH signal) 4. Lower throttle to the minimum 5. You should hear 2 D's -- after that you should be good to throttle up ### ⭐⭐⭐⭐⭐ Ok but tricky *by C***S on April 9, 2025* I initially left a bad review, because after connecting this to an Arduino and trying to activate a motor with a basic servo sketch, it did nothing other than make the ESC beep. Then I did some more research and learned these ESCs have a startup routine needed to "arm" them, AND that I needed to power cycle the ESC after each Arduino update. After doing both of those, then my servo sketch worked. ### ⭐⭐⭐⭐ Works as advertised *by D***Y on November 6, 2020* i BOUGHT THE FOUR SET AND NOW ONLY HAVE ONE THAT WORKS THE SPEED CONTROL GOS OUT AND THE PLANE COMES DOWN TWO THAT ARE WASTED AND ONE GLIDED IN NOT WORTH THE MONEY. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/139011829-qwinout-2-4s-30a-rc-brushless-esc-simonk-firmware-electric](https://www.desertcart.tn/products/139011829-qwinout-2-4s-30a-rc-brushless-esc-simonk-firmware-electric) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-13*