Overview
The SPM Avian 85-Amp Smart Lite Brushless ESC represents Spektrum's commitment to delivering reliable, intelligent electronic speed control for RC aircraft enthusiasts across the UK. Whether you're flying fixed-wing aircraft, training planes, or sport flyers, this brushless ESC offers the perfect balance of performance, durability and smart technology to take your flying to the next level. The Avian 85-Amp is engineered for pilots who demand dependable power management without unnecessary complexity, making it an excellent choice for both experienced RC flyers and those stepping up from basic brushed systems to advanced brushless RC aircraft power.
This Smart Lite variant combines 85 amps of continuous power delivery with intuitive smart programming features that allow you to customise performance to your exact specifications. With support for 3S through 6S LiPo batteries, the Avian 85-Amp delivers the voltage flexibility you need for various aircraft types and flying styles. The inclusion of the IC5 connector—a professional-grade battery connection system—ensures secure, reliable power delivery and compatibility with Spektrum's ecosystem of RC aircraft components and batteries available throughout the UK.
Built to professional standards yet accessible to serious hobbyists, this brushless ESC features a robust construction that withstands the demands of regular flying, thermal management for sustained performance, and forward/reverse capability for versatile aircraft applications. The programmable nature of the Smart Lite technology means you can fine-tune low-voltage cutoff, timing, and other critical parameters to match your motor, battery and flying preferences perfectly.
Key Features
- 85-Amp Continuous Current Rating — Delivers substantial continuous power output that allows you to operate high-performance brushless motors without thermal limitation, ensuring consistent throttle response and acceleration throughout your flight sessions.
- 3S to 6S LiPo Battery Compatibility — Works seamlessly with a wide range of LiPo battery voltages, giving you the flexibility to choose the power level that suits your aircraft and flying style, from 11.1V 3S packs through to 22.2V 6S configurations.
- Smart Lite Programmable Technology — Offers customisable programming capabilities including adjustable low-voltage cutoff protection, allowing you to safeguard your expensive batteries and extend their lifespan whilst optimising performance.
- IC5 Battery Connector — Features professional-grade IC5 connectors that provide superior electrical contact, reduced resistance and increased reliability compared to standard connectors, ensuring stable power delivery to your motor at all times.
- 6.0V BEC Output — Integrated battery elimination circuit provides clean, regulated 6.0-volt power to your receiver and servos, eliminating the need for separate battery packs and streamlining your aircraft's electrical architecture.
- Forward and Reverse Capability — Enables directional motor control in both directions, providing flexibility for different aircraft designs and flying applications where reverse thrust or motor reversal proves beneficial.
- Brushless Motor Compatibility — Engineered specifically for brushless motor systems, delivering the precision electronic commutation required for efficient, smooth and powerful brushless aircraft motor operation.
- Auto Cutoff Protection — Intelligent automatic cutoff system monitors battery voltage continuously and disables the motor if voltage drops to unsafe levels, protecting your battery cells from damage through over-discharge.
- Compact Lightweight Design — Weighs just 3.3 ounces (0.20 lbs) with dimensions of 8 inches long by 5 inches wide by 0.6 inches tall, making it ideal for weight-conscious aircraft builds where every gram matters for flight performance.
Technical Performance
The SPM Avian 85-Amp Smart Lite Brushless ESC demonstrates exceptional engineering quality throughout its construction. At just 3.3 ounces, this ESC achieves a remarkable power-to-weight ratio, making it perfect for aircraft where weight management directly impacts flight characteristics and battery endurance. The unit measures 203mm in length, 127mm in width and 15mm in height, allowing integration into tight aircraft fuselage spaces without compromising your aerodynamic design or weight distribution. The 12 AWG power wiring provides excellent current-carrying capacity, minimising voltage sag during high-demand flight manoeuvres and ensuring your brushless motor receives clean, consistent power. The 85-amp rating ensures you can operate demanding brushless aircraft motors—such as high-KV sport motors or larger trainer motors—with headroom for reliability. Input voltage flexibility from 3S through 6S LiPo batteries (11.1 volts through 22.2 volts) means this single ESC can power an entire fleet of aircraft, from basic trainers running on economical 3S packs to high-performance aerobatic aircraft demanding the punch of 6S configuration. The 6.0V BEC output reliably powers receivers and servos without voltage sag, ensuring your flight control surfaces respond precisely and your receiver operates without interference. The programmable low-voltage cutoff allows you to protect your specific battery chemistry and cell count, extending battery life and preventing the performance degradation that occurs when LiPo cells discharge below safe operating thresholds. Whether you're flying gentle trainer flights or pushing your aircraft to its limits during competition-style flying, this intelligent ESC adapts to your requirements through smart programming capabilities.
What's in the Box
- Avian 85-Amp Smart Lite Brushless ESC with IC5 battery connector
Frequently Asked Questions
- Is the Spektrum Avian 85-Amp Smart Lite Brushless ESC suitable for beginner RC pilots? — Yes, whilst this ESC offers advanced programmable features, it's designed with smart technology that works reliably with straightforward settings straight from the box. Beginners benefit from the auto-cutoff protection which safeguards expensive LiPo batteries, and the straightforward IC5 connector system eliminates confusion with battery connections. As your skills develop, you can explore the programmable features to optimise performance.
- What batteries does the Avian 85-Amp ESC require? — This ESC accepts 3S, 4S, 5S and 6S LiPo batteries, providing voltage ranges from 11.1 volts (3S) through 22.2 volts (6S). The integrated 6.0V BEC means your receiver and servos draw power from the main battery pack, so you only need one battery to power your complete aircraft system. Your specific battery choice depends on your motor's voltage requirements and your desired performance level.
- What makes the Smart Lite technology beneficial for my RC aircraft? — Smart Lite programming allows you to customise the ESC's behaviour to match your specific motor, battery and flying preferences. You can adjust the low-voltage cutoff threshold to protect your particular battery chemistry, fine-tune motor timing for smoother operation, and enable or disable features like reverse based on your aircraft type. This programmability ensures optimal performance and extends the lifespan of your expensive batteries.
- How does the IC5 connector differ from standard battery connectors? — The IC5 connector features professional-grade design with larger contact surfaces and superior contact geometry compared to standard connectors. This reduces electrical resistance, minimises voltage sag during high current draw, and provides more reliable, secure connections that are less prone to accidental disconnection. The IC5 standard is increasingly recognised as the premium connector choice for performance-oriented RC aircraft systems in the UK and worldwide.
- Can I use the Avian 85-Amp ESC as a direct replacement in my existing aircraft? — Yes, provided your aircraft currently uses an 85-amp or lower-rated ESC with an IC5 battery connector and 6.0V BEC output. The compact 203mm length, 127mm width and 15mm height should fit in most aircraft designed for similarly-rated ESCs. However, always verify the physical dimensions and connector compatibility with your specific aircraft before purchasing to avoid fitment issues.
- What is the difference between the Avian Smart Lite and other Spektrum ESC ranges? — The Avian Smart Lite series represents a balanced offering with 85-amp capacity, 3S-6S compatibility and core smart programming features. Spektrum's higher-capacity Avian HV models offer greater amperage (160-amp and 200-amp versions) and support for higher voltage packs (up to 14S), making them suitable for larger or more demanding aircraft. The Smart Lite variant provides excellent value for typical sport flying, whilst HV variants suit competition and high-performance applications. Other Spektrum ranges like the Firma series serve different aircraft types and applications.
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 SPM Avian 85-Amp Smart Lite Brushless ESC, 3S-6S: IC5 P-SPMXAE85A 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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