Overview
The ARRMA BLX185 Brushless 6S ESC with IC5 connectors is a professional-grade electronic speed controller designed for high-performance RC cars and trucks across the UK. This waterproof ESC delivers consistent, reliable power control and is fully compatible with 6S LiPo batteries, making it an excellent choice for enthusiasts looking to upgrade their brushless RC vehicles. Whether you're piloting a 1/7 scale street bash model, a 1/8 scale speed truck, or any ARRMA 6S brushless vehicle, the BLX185 provides the precision throttle control and advanced safety features you need for serious RC driving.
Built to withstand intense driving action and challenging conditions, the BLX185 combines cutting-edge electronics with practical engineering. The ESC is favoured by competitive RC drivers and weekend bashers alike, offering the reliability and performance required to handle extreme speeds and responsive handling. As an authorised ARRMA dealer, RC Model Shop stocks this industry-recognised speed controller as a direct replacement or upgrade component for numerous ARRMA 6S models including the Infraction, Limitless, Mojave, Kraton, Notorious, Outcast, Talion, and Typhon platforms.
The BLX185 represents the perfect balance between advanced technology and user-friendly operation. Its comprehensive feature set includes waterproof construction, thermal management through an integrated cooling fan, intelligent battery protection, and intuitive three-mode throttle profiles. If you're serious about RC performance and reliability, the ARRMA BLX185 is a proven choice trusted by the RC community across the UK and beyond.
Key Features
- 150A Maximum Continuous Current Rating — The BLX185 is rated for 150A peak current delivery, providing sufficient power headroom for high-KV brushless motors and ensuring consistent performance even during aggressive acceleration and high-speed runs without thermal shutdown.
- 6S LiPo Compatible with 22.2V Maximum Rating — This ESC is engineered specifically for 6S LiPo battery packs (22.2V nominal), allowing you to harness the full power potential of modern RC batteries whilst maintaining electronic safety and reliability across 3S, 4S, and 6S chemistries.
- IC5 Connectors for Superior Reliability — The fitted IC5 connectors provide gold-plated contacts and improved current handling compared to XT60 alternatives, reducing resistance and heat generation during demanding RC driving whilst offering superior durability and connection security.
- Fully Waterproof Construction — Purpose-built waterproof sealing protects all internal circuitry from moisture, mud, water spray, and wet conditions, making the BLX185 suitable for muddy terrain, water crossings, and all-weather RC driving without reliability compromise.
- Integrated Cooling Fan for Thermal Management — The built-in active cooling fan monitors ESC temperature in real-time and automatically activates to dissipate heat during intense driving sessions, preventing thermal throttling and extending component lifespan during sustained high-performance use.
- Over Voltage Protection — Advanced circuitry monitors incoming battery voltage and protects the ESC from damage caused by overvoltage spikes or charging errors, adding a critical layer of safety to your RC power system.
- Two-Stage LiPo Cut-Off System — The intelligent dual-stage LiPo protection cuts throttle output at a first stage to warn drivers of low battery voltage, then performs a complete shutdown at stage two to prevent over-discharge damage to valuable LiPo battery packs and protect cell integrity.
- 10AWG High-Quality Motor Wires — Premium-grade 10AWG (American Wire Gauge) motor wiring with low resistance ensures efficient power delivery to the motor with minimal voltage drop, critical for maximising speed and acceleration in competitive RC applications.
- 6V BEC (Battery Eliminator Circuit) — The integrated 6V BEC unit supplies stable regulated voltage to power your radio receiver and servo systems, eliminating the need for a separate battery and simplifying RC car wiring complexity.
- Three-Mode Throttle Profile System — Selectable Forward/Reverse/Brake modes allow drivers to configure throttle response to match driving style and conditions, with brake mode providing regenerative or dynamic braking for improved control and faster stopping distance.
- 6.5mm Bullet Motor Connectors — Standardised 6.5mm bullet connectors ensure broad motor compatibility across the ARRMA ecosystem and beyond, allowing flexible motor selection and quick swap capability for different speed and torque requirements.
- Sensorless Motor Operation — The BLX185 operates with sensorless brushless motor detection, reducing wiring complexity and motor cost whilst maintaining smooth throttle response and reliable commutation across the full RPM range.
Technical Performance
The ARRMA BLX185 represents a mature engineering design optimised for the demanding requirements of modern RC vehicles. With a 150-ampere continuous current rating and rated for 22.2V (6S LiPo) operation, this ESC delivers the electrical performance needed for high-output brushless motors whilst maintaining thermal stability through active fan cooling. The integration of premium 10AWG motor wiring reduces resistive losses, ensuring maximum power reaches your motor with minimal waste. The 6V BEC circuit is engineered to supply stable, clean voltage even during peak motor current draw, critical for maintaining precise servo positioning and receiver stability during aggressive driving manoeuvres. Construction materials and potting compound provide complete waterproof protection to IP67 standards or equivalent, making this ESC suitable for muddy terrain, wet weather, and challenging off-road conditions encountered in UK RC racing and recreational driving. The three-mode throttle profile system (Forward/Reverse/Brake) provides configurable response curves, allowing drivers to tailor ESC behaviour to match vehicle characteristics, terrain conditions, and personal driving preference. Advanced protection circuits include over-voltage monitoring with automatic shutdown, dual-stage LiPo cell monitoring to prevent destructive over-discharge, and thermal management through intelligent cooling fan operation. The IC5 connector specification ensures compatibility with modern ARRMA vehicle platforms whilst delivering superior electrical performance compared to legacy connector styles. This ESC represents five years of proven field performance across competitive racing, recreational bashing, and professional RC applications in the UK and internationally.
What's in the Box
- ARRMA BLX185 Brushless 6S ESC with IC5 connectors
- Pre-soldered 10AWG motor wires with 6.5mm bullet connectors
- Integrated cooling fan assembly
What You Need to Complete
- Compatible ARRMA 6S brushless vehicle or roller chassis
- 6S LiPo battery pack (5000mAh 35C minimum recommended per battery)
- LiPo battery charger capable of 6S charging
- Radio receiver compatible with your RC transmitter
- Brushless motor (3S, 4S, or 6S compatible, with 6.5mm bullet connectors)
Frequently Asked Questions
- Is the ARRMA BLX185 ESC waterproof and suitable for wet UK weather driving? — Yes, the BLX185 features complete waterproof construction throughout all internal electronics and connectors, making it fully capable of handling wet grass, mud, water crossings, and rainy conditions commonly encountered during RC driving across the UK. The waterproof design protects circuitry from corrosion and short circuits during wet conditions.
- What battery does the BLX185 ESC require and what is the recommended specification? — The BLX185 is compatible with 3S, 4S, and 6S LiPo battery packs, with a maximum voltage rating of 22.2V (6S nominal). The manufacturer recommends a minimum specification of 5000mAh capacity with a 35C discharge rate per battery pack. Higher capacity (7000mAh, 8000mAh, 10000mAh) batteries and higher C-ratings (50C, 60C, 80C) will deliver improved run-times and performance.
- Which ARRMA vehicles is the BLX185 ESC compatible with? — The BLX185 is a standard parts fitment for numerous ARRMA 6S brushless models including the 1/7 Infraction, 1/7 Limitless, 1/7 Mojave, 1/8 Kraton, 1/8 Notorious, 1/8 Outcast, 1/8 Talion, and 1/8 Typhon. It can also be installed as an optional upgrade or replacement component in many other ARRMA 6S platforms.
- What is the maximum continuous current rating and does the ESC have thermal protection? — The BLX185 is rated for 150 amperes continuous current delivery, providing excellent power capacity for high-performance brushless motors. Thermal protection is provided through an integrated cooling fan that automatically activates during heat buildup, combined with firmware-based monitoring to prevent damage from overheating during sustained high-speed driving.
- Can I use this ESC with different throttle profiles and brake modes? — Yes, the BLX185 features a three-mode throttle profile system offering Forward, Reverse, and Brake modes. This allows you to configure the ESC response characteristics to match your driving style, vehicle setup, and track conditions, with brake mode providing dynamic or regenerative braking for improved stopping control.
- Does the BLX185 include servo power and receiver voltage supply? — Yes, the ESC includes an integrated 6V BEC (Battery Eliminator Circuit) capable of supplying stable regulated voltage to power your radio receiver and up to two servo systems. This eliminates the need for a separate receiver battery pack, simplifying wiring and reducing overall system weight.
- What protection features does the BLX185 offer to my LiPo battery? — The BLX185 includes comprehensive LiPo battery protection through a two-stage cut-off system. The first stage reduces throttle output at a preset low-voltage threshold to warn the driver of depleted battery capacity. The second stage performs complete shutdown to prevent over-discharge damage that could reduce battery lifespan or cause cell damage requiring disposal.
- Is the BLX185 suitable for beginners or is it an advanced ESC? — The BLX185 is suitable for intermediate to advanced RC drivers comfortable with brushless systems and 6S LiPo batteries. Beginners should ensure they have experience with LiPo battery safety, proper charging procedures, and basic RC vehicle maintenance before operating this ESC. Its advanced features like configurable throttle profiles and thermal management require some familiarity with ESC programming.
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 ARRMA BLX185 Brushless 6S ESC with IC5 Z-ARA390211IC 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.
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