Overview
The Hobbywing EZRUN MAX4 HV Brushless Speed Controller (HW30104002) is the most sought-after ESC on the market, designed specifically for power-hungry RC enthusiasts who demand extreme performance from their 1/5th scale off-road vehicles and trucks. This is a professional-grade electronic speed controller that combines dynamic specifications with outstanding reliability, making it the ideal choice for competitive racing, weekend bashing, and demanding track conditions across the UK and beyond. Whether you're running a heavy-duty off-road truck or pushing the limits on a challenging slope, the MAX4 HV delivers the powerful acceleration and abundant output you need to dominate the competition.
Built with the highest quality materials available and incorporating advanced software developed by Hobbywing's in-house engineering team, the MAX4 HV ESC is engineered to withstand extreme weather and surface conditions that would damage lesser controllers. The ESC features full-sensored brushless motor mode operation, delivering excellent linearity at low speeds and powerful acceleration across the entire throttle range. With a continuous current rating of 300A and an incredible peak current capacity of 2000A, this brushless ESC provides the sustained high-power output needed for demanding RC car applications, whilst maintaining extremely low operating temperatures through its integrated copper thermal conduction sink and advanced thermal management systems.
If you're serious about RC car performance in the UK and want an ESC that can handle 6S, 8S, 10S, or 12S LiPo batteries with equal confidence, the EZRUN MAX4 HV is the controller that delivers. Its combination of wireless programming capability, real-time data logging, waterproof construction, and multiple safety protection systems makes it a complete package for any 1/5th scale enthusiast.
Key Features
- Extreme Power Output — With a maximum continuous current of 300A and peak current of 2000A, this brushless ESC delivers the raw power needed for aggressive launches, high-speed straights, and flying slopes, ensuring your motor receives consistent, powerful acceleration without hesitation.
- Full-Sensored Brushless Motor Mode — Operating exclusively in full-sensored mode, the MAX4 HV provides superior linearity at low speeds, precise throttle control, and flexible, smooth power delivery that sensorless systems cannot match, giving you the edge in competitive racing.
- Integrated Copper Thermal Management — The internal circuitry board uses a copper thermal conduction sink built into a high-reliability thermal system that keeps the ESC running cool even under maximum load, protecting both the controller and your power system from heat damage.
- IP-67 Waterproof and Dustproof Protection — The advanced waterproof design allows your ESC to handle muddy, sandy, icy, snowy, and water-logged track conditions without degradation, making it suitable for all-weather RC car operation and extreme bashing sessions.
- Superior 25A Switch-Mode BEC with Multiple Voltage Outputs — The built-in BEC delivers up to 10A continuous current and 25A instant capability with switchable output voltages of 6V, 7.4V, or 8.4V, providing reliable power for high-torque servos and ensuring full servo performance regardless of your power demands.
- Built-In Spark-Proof Circuitry — The spark-proof design prevents dangerous electrical sparks when connecting high-voltage 6S to 12S LiPo battery packs, protecting both your equipment and preventing potential injury from dangerous spark events during battery connections.
- Advanced and Secured Electronic Switch — Unlike traditional mechanical switches, this electronic switch features a longer lifespan of 50,000 switching cycles and is completely waterproof, dustproof, and shock-proof, eliminating issues caused by dirt, humidity, and hard impacts from aggressive bashing.
- Capacitor Thermal Protection — Integrated protection prevents capacitors from exploding or suffering irreversible damage due to overload conditions, ensuring your ESC remains stable and reliable even during extreme power demands.
- Wireless OTA Programming and Firmware Updates — Using the Hobbywing OTA module and HW Link smartphone app, you can adjust ESC parameters, upgrade firmware, and access real-time running data wirelessly within a 5-metre range, eliminating the need for complicated physical programming boxes.
- Real-Time Data Logging and Performance Monitoring — Record and analyse extreme values, real-time data, and historical graphs via the OTA module, allowing you to monitor voltage, current, temperature, and other critical parameters directly on your smartphone during operation.
- New Sensored Cable Interface — Equipped with Hobbywing's latest sensored cable connector design, the MAX4 HV offers maximum compatibility with Hobbywing's full range of sensored brushless motors whilst maintaining the highest IP-67 waterproof protection levels.
- Multiple Motor and ESC Protection Systems — Built-in overload protection, battery low-voltage cut-off, ESC overheat protection, motor overheat protection, signal loss protection, and current protection keep your equipment safe from damage in all operating conditions.
Technical Performance
The EZRUN MAX4 HV represents the pinnacle of ESC engineering for 1/5th scale RC vehicles. This professional-grade brushless speed controller measures 125mm in length, 85mm in width, and 61.7mm in height, with a robust weight of 775.4 grams, providing a substantial, durable construction that reflects its ability to handle extreme power demands. The ESC features 8AWG power wires (200mm length in both red and black) with 8.0mm gold female connectors, designed for secure, reliable connections to high-capacity LiPo batteries. Operating voltage ranges from 6-8.4V for the built-in BEC system, which is independently powered by the ESC itself. The controller uses a framed 50x50x15mm fan design for active cooling, ensuring thermal stability during sustained high-current operation. The MAX4 HV supports both sensored and sensorless brushless motors, with a recommended motor limit of KV ? 600 when running 12S LiPo batteries with 70125 size motors, making it compatible with Hobbywing's complete EZRUN motor range. Programming is accessed via the SET button on the ESC, with support for LCD G2 Program Boxes, LCD PRO boxes, and the modern OTA Programmer module. The ESC supports firmware upgrades via multiple programming methods, and includes both extreme value and real-time data recording with OTA module capability for historical graphing. The waterproof, electronically-switched design eliminates mechanical switch wear, whilst the integrated copper heat dissipation system and thermal protection systems ensure reliable operation even under the most demanding conditions on UK tracks.
What's in the Box
- HOBBYWING EZRUN MAX4 HV Brushless Speed Controller (HW30104002)
- Red and black 8AWG power wires (200mm each) with 8.0mm gold female connectors
- ESC mounting hardware
What You Need to Complete
- 6S to 12S LiPo battery pack (6-12S input voltage compatible)
- Sensored or sensorless brushless motor (recommended KV rating ? 600 for 12S with 70125 size motors)
- Radio receiver and transmitter system
- Servo for steering control
- 1/5th scale RC car chassis suitable for heavy-duty off-road or truck applications
- Optional: Hobbywing OTA Programmer module (HW30850400) for wireless programming and data logging via smartphone
- Optional: Multifunction LCD Program Box (HW30502001) for ESC parameter adjustment
Frequently Asked Questions
- Is the Hobbywing MAX4 HV ESC suitable for 12S LiPo batteries and high-powered 1/5th scale trucks? — Yes, the MAX4 HV is specifically designed for 6-12S LiPo input and excels with high-powered applications. It supports sensored brushless motors with KV ratings of 600 or lower when running 12S with 70125 size motors, making it ideal for demanding 1/5th scale trucks and off-road vehicles. The 300A continuous and 2000A peak current rating ensures it can handle the extreme power demands of these heavy-duty setups.
- What makes the MAX4 HV better than other brushless ESCs for RC cars in the UK? — The MAX4 HV combines several advantages: full-sensored brushless mode operation for superior low-speed linearity, an extremely powerful 300A continuous current rating, integrated copper thermal management keeping temperatures extremely low, IP-67 waterproof and dustproof protection for all-weather operation, a superior 25A switch-mode BEC supporting multiple voltage outputs, and wireless OTA programming with real-time data logging. The advanced electronic switch eliminates mechanical switch issues, whilst the spark-proof design prevents damage from high-voltage battery connections.
- Can I use the MAX4 HV with sensorless brushless motors? — Yes, the MAX4 HV supports both sensored and sensorless brushless motor operation, providing flexibility in motor selection. However, Hobbywing recommends using their sensored brushless motors for optimal compatibility and performance, as the ESC is optimised for full-sensored mode operation.
- What is the built-in BEC output capability and servo compatibility? — The built-in switch-mode BEC delivers up to 10A continuous current and 25A instant peak current, with switchable output voltages of 6V, 7.4V, or 8.4V. This allows the ESC to power demanding high-torque servos used in heavy-duty 1/5th scale trucks and off-road vehicles, eliminating the need for a separate battery to power your steering servo.
- How do I program and upgrade the MAX4 HV ESC, and can I monitor performance data? — The ESC supports multiple programming methods: the SET button on the ESC itself, an LCD G2 Program Box, an LCD PRO Program Box, and the modern OTA Programmer module. The OTA module enables wireless Bluetooth programming via the Hobbywing HW Link smartphone app within a 5-metre range. Real-time data recording captures voltage, current, temperature, and other parameters, with historical data graphing available through the OTA module, allowing you to monitor your ESC performance directly on your phone.
- Is the MAX4 HV waterproof and suitable for muddy, wet, and snowy track conditions? — Yes, the IP-67 waterproof and dustproof system ensures excellent protection in all weather and track conditions. The ESC can operate reliably on muddy, sandy, icy, snowy, and water-logged surfaces without damage, making it perfect for all-weather RC racing and extreme bashing across the UK.
- What protective features does the MAX4 HV include to prevent damage? — The ESC includes multiple protection systems: battery low-voltage cut-off, ESC overheat protection with thermal management systems, motor overheat protection, signal loss protection, current overload protection, capacitor thermal protection to prevent capacitor explosion, and spark-proof circuitry to protect battery connectors and prevent injury from high-voltage sparks.
- What are the physical dimensions and weight of the MAX4 HV? — The ESC measures 125mm (length) x 85mm (width) x 61.7mm (height) and weighs 775.4 grams. Its compact yet robust design fits securely in 1/5th scale chassis whilst providing the substantial construction necessary for handling extreme power delivery.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the HOBBYWING EZRUN MAX4 HV BRUSHLESS SPEED CONTROLLER HW30104002 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
- Product Name: EzRun Max4 HV
- Product Number: HW30104002
- Type: Brushless (BL)
- Mode: Sensored (SD) and Sensorless
- Scale: 1/5th
- Waterproof Rating: IP-67
- Continuous Current: 300A
- Peak Current: 2000A
- Input Voltage: 6-12S LiPo
- BEC Output: 6V / 7.4V / 8.4V adjustable
- BEC Continuous Current: 10A (Switch-mode)
- BEC Peak Current: 25A
- Input Wires: Red-8AWG-200mm x1 / Black-8AWG-200mm x1
- Input Connectors: 8.0mm Gold (female)
- Output Wires: No separate output wires listed
- Output Connectors: No 8.0mm Gold connectors for output specified
- Fan Type: Framed
- Fan Size: 50x50x15mm
- Voltage Range: 6-8.4V (for fan power)
- Fan Power: Powered by ESC BEC
- Programming Methods: SET button on ESC, LCD G2 Program Box, LCD PRO Program Box, OTA Programmer
- Program Port: Shares FAN/Program port
- WiFi Module: Not supported
- Data Recording - Extreme Values: Supported
- Data Recording - Real-time Data: Supported
- Data Recording - Built-in Historical Data Graph: Not supported
- Data Recording - External OTA Historical Data Graph: Supported
- Firmware Upgrade: Supported
- Dimensions (L x W x H): 125mm x 85mm x 61.7mm
- Weight: 775.4g
- Compatible Motor Type: Sensored brushless motors / Sensorless brushless motors
- Recommended Applications: 1/5th off-road, heavy-duty trucks
- Motor KV Limit (12S LiPo): KV ? 600 (for 70125 size motors)
- OTA Programmer Model Number: HW30850400
- OTA Programmer Working Voltage: 5-12.6V
- OTA Programmer Bluetooth Version: ? 4.0
- OTA Programmer Effective Range: 0-5m (Open Field)
- Multifunction LCD Program Box Model Number: HW30502001
- Multifunction LCD Program Box Dimensions: 91x51x17mm (LxWxH)
- Electronic Switch Type: Advanced and secured electronic switch
- Switch Lifespan: 50,000 times
- Switch Features: Waterproof, Dustproof, Shock-proof
- Spark-Proof Circuitry: Yes
- Capacitor Thermal Protection: Yes
- Thermal Management: Copper thermal conduction sink integrated into high-reliability thermal system
- Operating Temperature: Extremely low temperature performance
- Weather/Dust Protection: Applicable to all weather and track conditions (muddy, sandy, icy, snowy, water)
- Sensored Cable Interface: New type sensored cable interface included
Product Description of Hobbywing HW30104002 ESC with 300A continuous and 2000A
The Hobbywing HW30104002 ESC with 300A continuous and 2000A peak current is a high-performance, black brushless speed controller engineered for serious RC enthusiasts operating 1/4–1/5 scale vehicles. Designed to withstand the most demanding environments, the Hobbywing HW30104002 MAX4 HV speed controller with waterproof design delivers uncompromising power, intelligent protection, and advanced configurability. Whether you're navigating snow-packed trails, muddy terrain, or high-speed straightaways, this ESC is built to perform under pressure. With support for 6–12S LiPo input and a robust switch-mode BEC, the Hobbywing HW30104002 brushless ESC with 6–12S LiPo input and 10A BEC offers the flexibility and reliability needed for large-scale conversions and competitive builds.
Key features of the Hobbywing HW30104002 ESC
- Waterproof and dustproof casing – ensures consistent performance in snow, sediment, and water
- Electronic switch – eliminates mechanical failure and resists impact-triggered shutdowns
- Adjustable BEC output – supports 6V, 7.4V, and 8.4V for high-voltage servo compatibility
- Fire-proof circuitry – protects battery connectors and prevents spark-related damage
- Capacitor protection – stabilizes voltage and extends component lifespan
- Real-time data recording – enables performance tracking via HW LINK app and OTA Bluetooth module
How does the Hobbywing HW30104002 ESC handle extreme terrain and voltage?
The Hobbywing HW30104002 ESC with 300A continuous and 2000A peak current is purpose-built for rugged environments and oversized motors. With support for up to 12S LiPo input and a motor KV limit of ?600, this ESC is ideal for 70125-class brushless motors used in large-scale RC platforms. The waterproof casing and dustproof sealing allow the ESC to operate reliably in snow, ice, sediment, and water accumulation—conditions that typically compromise lesser controllers. Whether you're powering through off-road terrain or executing high-speed launches, the Hobbywing HW30104002 ESC maintains stable output and thermal integrity, ensuring uninterrupted performance across diverse climates and driving styles.
Why is the electronic switch a game-changer for large-scale RC builds?
The Hobbywing HW30104002 with 8.4V adjustable BEC and electronic switch replaces traditional mechanical switches with a secure electronic alternative. This innovation eliminates common failure points such as contact rust, moisture intrusion, and impact-triggered shutdowns—issues that plague mechanical switches in harsh environments. The electronic switch is engineered to withstand violent impacts, including slope landings and aggressive terrain transitions, making it ideal for high-performance builds. By removing mechanical vulnerabilities, the Hobbywing HW30104002 ESC enhances reliability and ensures consistent power delivery throughout demanding sessions.
How does the adjustable BEC support high-voltage servo systems?
The integrated switch-mode BEC in the Hobbywing HW30104002 brushless ESC with 6–12S LiPo input and 10A BEC delivers a continuous current of 10A and peak bursts up to 25A. Users can select between 6V, 7.4V, and 8.4V output settings to match the voltage requirements of modern high-torque servos. This flexibility is essential for 1/4–1/5 scale vehicles where servo responsiveness and stability directly impact control precision. The BEC’s switch-mode architecture improves efficiency and reduces heat buildup, ensuring that servos operate at peak performance without compromising system integrity. Whether you're steering a heavy truggy or managing throttle response in a desert buggy, the adjustable BEC provides the voltage headroom needed for optimal servo behavior.
What protection systems are built into the Hobbywing MAX4 HV ESC?
The Hobbywing MAX4 HV ESC with capacitor protection and fire-proof circuitry integrates multiple layers of protection to safeguard both the ESC and connected components. Fire-proof circuitry prevents spark damage during battery connection, protecting both the case and user from electrical hazards. Capacitor protection stabilizes voltage during high-load operation, reducing stress on internal components and extending lifespan. Additional failsafe protocols include battery low voltage protection, ESC and motor overheat protection, signal loss detection, and current overload management. These systems work in tandem to ensure safe operation across all conditions, making the Hobbywing HW30104002 ESC a trusted choice for high-voltage applications.
Can the Hobbywing HW30104002 ESC be configured wirelessly?
Yes, the Hobbywing ESC for 1/4–1/5 scale vehicles with OTA Bluetooth support is compatible with LED program cards, LCD program boxes, and OTA programmers (sold separately). Users can configure throttle curves, brake strength, timing, and other parameters via the HW LINK app, using the OTA Bluetooth module for wireless access. This functionality allows for real-time data recording, enabling users to monitor performance metrics and make informed adjustments on the fly. Whether you're tuning for speed, torque, or terrain responsiveness, the Hobbywing HW30104002 ESC offers the tools needed for precise configuration and optimization.
What makes the Hobbywing HW30104002 ESC the best choice for 70125 motor setups?
The Hobbywing HW30104002 MAX4 HV speed controller with waterproof design is specifically engineered to support 70125-size motors with a KV limit of ?600 when paired with 12S LiPo input. This compatibility ensures that users can harness the full potential of large-scale brushless motors without risking thermal overload or voltage instability. The ESC’s robust construction, advanced protection systems, and high-current handling make it the best option for Nitro-to-Electric conversions and high-performance builds. Whether you're upgrading a 1/5 scale SCT or building a custom 1/4 scale rig, the Hobbywing HW30104002 ESC delivers the power and reliability needed for elite-level control.
Is the Hobbywing HW30104002 ESC a reliable upgrade for harsh terrain?
Absolutely. The Hobbywing HW30104002 ESC with 300A continuous and 2000A peak current is designed to thrive in environments where other controllers fail. From snow-covered trails to muddy off-road tracks, the waterproof and dustproof design ensures uninterrupted operation. The fire-proof circuitry and capacitor protection add layers of resilience, while the electronic switch eliminates mechanical vulnerabilities. Combined with real-time data tracking and wireless programmability, this ESC offers a complete solution for users who demand reliability, configurability, and raw power in unforgiving conditions. For those seeking an affordable Hobbywing MAX4 HV with LED program card and LCD box compatibility, this ESC delivers exceptional value and performance.
For RC builders ready to push boundaries with high-voltage systems and large-scale platforms, buy Hobbywing HW30104002 ESC with real-time data recording and HW LINK app today.
Technical Specifications of Hobbywing HW30104002 ESC with 300A continuous and 2000A
Brand, Model and Product Type
- Brand: Hobbywing
- Model: HW30104002
- Product Type: Hobbywing HW30104002 ESC with 300A continuous and 2000A peak current, Hobbywing HW30104002 MAX4 HV speed controller with waterproof design, Hobbywing HW30104002 brushless ESC with 6–12S LiPo input and 10A BEC, Hobbywing HW30104002 with 8.4V adjustable BEC and electronic switch, Hobbywing MAX4 HV ESC with capacitor protection and fire-proof circuitry, Hobbywing ESC for 1/4–1/5 scale vehicles with OTA Bluetooth support
- Product Colour: Black
Dimensions
- Length: 12.5 cm – suitable for large-scale chassis with high-current requirements
- Width: 8.5 cm – compact enough for secure mounting in 1/4–1/5 scale platforms
- Height: 6.17 cm – accommodates internal cooling and protection systems
- Weight: 775.4 g – robust construction for high-load durability
Electrical and Performance Specifications
- Continuous Current: 300A – supports sustained high-power output for demanding applications
- Peak Current: 2000A – handles extreme torque bursts and acceleration loads
- Input Voltage: 6–12S LiPo – compatible with high-voltage battery configurations
- Motor Compatibility: Sensored and sensorless brushless motors – supports flexible setups
- Motor Limit: With 12S LiPo: KV ?600 – optimized for 70125-size motors
- BEC Type: Switch-mode – efficient and thermally stable for servo power delivery
- BEC Output: Adjustable 6V / 7.4V / 8.4V – supports a wide range of high-voltage servos
- BEC Current: 10A continuous, 25A peak – ensures reliable servo operation under load
Protection and Safety Features
- Waterproof Design: Innovative sealing process – enables safe operation in snow, ice, sediment, and water
- Dustproof Construction: Prevents debris intrusion – ideal for off-road and harsh terrain use
- Electronic Switch: Replaces mechanical switches – resists impact-triggered shutdowns and environmental damage
- Fire-Proof Circuitry: Protects battery connectors – prevents spark-related damage and injury
- Capacitor Protection: Stabilizes voltage – extends ESC lifespan and improves reliability
- Failsafe Systems: Includes low voltage, overheat, signal loss, and current overload protection
Programming and Connectivity
- Programming Port: Shared with fan interface – supports external configuration tools
- OTA Bluetooth Support: Enables wireless setup via HW LINK app – real-time data recording and parameter tuning
- Compatible Accessories: LED program card, LCD program box, OTA programmer – sold separately
What’s in the Box
- 1 × Hobbywing EZRUN MAX4 HV ESC
What You Require
- Compatible brushless motor (sensored or sensorless)
- 6–12S LiPo battery pack
- Optional OTA Bluetooth module for wireless programming
Sold Separately
- LED program card
- LCD program box
- OTA programmer
Finance Options
Click to see Novuna Finance Information
Novuna Personal Finance Available on this product
| DEPOSIT |
MONTHS |
APR |
MONTHLY PAYMENTS |
TOTAL AMOUNT PAYABLE |
| 24 Month Credit |
| £45.00 |
24 |
19.9% |
24 x £20.28 |
£531.72 |
| 36 Months Credit |
| £45.00 |
36 |
19.9% |
36 x £14.70 |
£574.20 |
| 48 Months Credit |
| £45.00 |
48 |
19.9% |
48 x £11.96 |
£619.08 |
| Buy Now Pay Later 48 months (6 months Deferred) |
| £45.00 |
48 |
24.9% |
48 x £14.10 |
£721.80 |
| Buy Now Pay Later 48 months (10 months Deferred) |
| £45.00 |
48 |
24.9% |
48 x £14.91 |
£760.68 |
| Buy Now Pay Later 48 months (12 months Deferred) |
| £45.00 |
48 |
24.9% |
48 x £15.76 |
£801.48 |
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