Overview
Like every component in the SpektrumT Smart ecosystem, FirmaT Smart ESCs combine "plug-and-play" simplicity with the ability to communicate with other Smart electronics - together, creating the best-performing RC system for your vehicle imaginable. This 150A brushless ESC gives your large-scale vehicle the ultimate drive while feeding real-time telemetry straight to your radio. Install a Firma Smart ESC and take your driving experience to a new level!
Firma Smart ESCs do much more than regulate power. They function like a virtual engineer inside your model, providing a direct path to the vital operating data you need to reach peak performance. Firma Smart ESCs give you an extra layer of confidence that your electronics are all operating at their best.
With Firma Smart ESCs, you'll be better connected to your vehicle than ever before - without installing extra components that all work independently of each other. You won't need extra wires, modules, or links. A Firma electronic speed control provides a one-wire solution for obtaining telemetry data such as RPM, temperature, battery voltage and capacity.
Firma ESCs not only gather the data but also send it to your transmitter in real time, instead of only storing it for after-run study. You're able to adjust settings as needed to boost performance on the go. The Firma Smart single-wire telemetry solution has been tested for quality and performance by the best brands in RC. Their verdict? Smart technology is both simpler and superior!
Features
- Smart all-in-one telemetry
- Fast, powerful 32-bit ARM M4 processor
- Waterproof
- Multiple options for easy programming:
- Button programming
- Smart ESC Programming Box
- SmartLink USB Updating and Programmer application
- Multi-point protection:
- Over-current protection
- Automatic LiPo low-voltage cutoff
- Thermal protection
- Failsafe protection
- Developed and designed by SpektrumT engineers, in partnership with the industry's leading ESC manufacturer
- Compact for easy installation in most applications
- Ready to install - no soldering required
- Rugged plastic case with mounting tabs
- Aluminum heat sink for high efficiency
- Cooling fan
- Adjustable high-power BEC
- Firmware updatable through the Smart ESC Programming Box
- High heat-resistant ICT connectors, backwards compatible with ECT connectors
- Limited 1-year warranty
Overview
The Spektrum Firma 150A V2 Brushless Smart ESC 6S represents the pinnacle of electronic speed control technology for large-scale RC vehicles. Designed and engineered by Spektrum in partnership with the industry's leading ESC manufacturer, this 150-amp brushless controller delivers the ultimate driving experience for demanding RC enthusiasts across the UK and beyond. Whether you're piloting a high-performance RC buggy, monster truck, or large-scale basher, this Smart ESC combines plug-and-play simplicity with advanced telemetry capabilities that transform how you monitor and optimise your vehicle's performance in real-time.
The Firma 150A V2 is engineered for RC car enthusiasts who demand the very best in brushless RC technology. This isn't just another electronic speed controller — it's a complete performance management system that functions like a virtual engineer inside your model, providing direct access to vital operating data you need to reach peak performance. Every component has been refined to deliver maximum power efficiency, reliability and ease of use, making it an excellent choice for both experienced racers and serious hobbyists looking to upgrade their RC setup with brushless power.
Like every component in the Spektrum Smart ecosystem, the Firma 150A V2 combines remarkable simplicity with intelligent communication capabilities. Install this Smart ESC alongside other Spektrum Smart components and create the best-performing RC system imaginable. The revolutionary one-wire telemetry solution eliminates the need for multiple sensors, modules and independent links, giving you a cleaner installation and more reliable system overall.
Key Features
- Smart All-in-One Telemetry — The Firma 150A V2 provides comprehensive real-time data transmission directly to your Spektrum transmitter, including RPM, temperature, battery voltage, battery capacity, cell balance information and speed. This one-wire telemetry solution means you can monitor vital performance metrics without installing extra sensors or modules, giving you complete visibility into your vehicle's operating condition during every run.
- Fast, Powerful 32-Bit ARM M4 Processor — The advanced 32-bit M4 processor delivers higher resolution signal input and more accurate motor output compared to standard ESCs, resulting in smoother throttle response, more precise control and better overall performance from your brushless motor.
- Waterproof Design for All-Weather Operation — The all-weather, waterproof construction allows the Firma 150A V2 to perform reliably in nearly any terrain and under almost any conditions. Whether you're running through dusty tracks, gravel circuits, snow, mud or water, this ESC keeps delivering consistent performance without compromise.
- Multiple Programming Options for Easy Customisation — You can programme the ESC using simple button programming with no additional equipment, the Smart ESC Programming Box for advanced trackside adjustments, or the SmartLink USB Updating and PC Programmer application for computer-based fine-tuning. This flexibility means you can adjust settings to suit driving conditions whenever needed.
- Multi-Point Protection System — The Firma 150A V2 incorporates over-current protection, automatic LiPo low-voltage cutoff, thermal protection and failsafe protection. These intelligent safeguards work together to protect your electronics and battery from damage caused by extreme conditions, voltage spikes or thermal stress.
- Compact, Ready-to-Install Design — The rugged plastic case with integrated mounting tabs makes installation straightforward in most applications. No soldering required — simply connect the motor, battery and receiver. The compact form factor fits easily into modern RC vehicle chassis without taking up excessive space.
- Aluminium Heat Sink with Cooling Fan — The integrated aluminium heat sink and active cooling fan ensure efficient thermal management even during extended high-power runs. This keeps the ESC operating at optimal temperature, maintaining peak performance and extending component lifespan.
- IC5 Connector with EC3/EC5 Backwards Compatibility — The Firma 150A V2 features the advanced IC5 series battery connectors, designed from the ground up to provide more solid connections, higher heat resistance and effortless installation compared to older connector types. When used with IC5-equipped Spektrum Smart batteries, the ESC can receive and transmit battery telemetry data automatically. EC5 connectors are also compatible for basic operation and ESC telemetry.
- Adjustable High-Power BEC — The built-in battery elimination circuit (BEC) supplies regulated power to your receiver and servos, with adjustable voltage output to suit different receiver and servo requirements. This eliminates the need for a separate power supply for your radio system.
- Firmware Upgradeable — New features and improvements can be added to your ESC through firmware updates, future-proofing your investment and ensuring you always have access to the latest performance enhancements and bug fixes from Spektrum.
- Smart Battery Integration — When paired with Spektrum Smart LiPo batteries featuring IC5 connectors, the Firma 150A V2 automatically receives and displays comprehensive battery telemetry on your transmitter, including cell count, cycle count, battery percentage, individual cell voltages and capacity information.
- Brake and Reverse Control — Full support for electronic braking and reverse functionality gives you complete control over your vehicle in both directions, with smooth modulation and reliable failsafe operation.
- Forward and Reverse Capability — Programmable forward and reverse operation allows you to customise throttle response and motor behaviour to match your driving style and vehicle setup preferences.
Technical Performance
The Spektrum Firma 150A V2 Brushless Smart ESC 6S is engineered to deliver exceptional performance for large-scale RC vehicles running 3S through 6S LiPo batteries. With a maximum continuous current rating of 150 amps and a maximum burst current capability of 950 amps, this ESC provides plenty of power headroom for high-performance brushless motors. The input voltage range of 3S to 6S LiPo (up to 22.2V maximum) makes it suitable for a wide variety of large-scale applications, from fast basher trucks to competitive racing buggies. The compact dimensions of just 58mm long, 48mm wide and 38mm high (weighing 238 grams) ensure it fits easily into most modern RC vehicle chassis without compromising space for other components. The waterproof construction, reinforced with an aluminium heat sink and active cooling fan, maintains safe operating temperatures even during sustained high-power runs. The fast 32-bit ARM M4 processor updates motor commands at extremely high frequencies, delivering smooth, precise throttle response that translates to better control and more competitive lap times. Whether you're piloting a brushless RC truck through muddy terrain or pushing a racing buggy to its limits on a competition track, the Firma 150A V2 combines raw power with intelligent management to keep your vehicle performing at its peak.
What's in the Box
- Spektrum Firma 150A V2 Brushless Smart ESC
- Spektrum Smart Sticker Sheet
- Product Manual
What You Need to Complete
- Spektrum Surface Receiver (compatible with Spektrum DSM/DSM2/DSMX protocol)
- LiPo Battery (3S to 6S recommended, with IC5 or EC5 connector)
- Spektrum Transmitter (compatible DSM/DSM2/DSMX radio)
- Brushless Motor compatible with 150A ESC
Frequently Asked Questions
- Is the Spektrum Firma 150A V2 suitable for beginners to RC hobbies? — Whilst the 150A rating makes this ESC best suited to large-scale vehicles and experienced users, the Smart technology and multiple programming options actually make it very user-friendly. If you're new to brushless RC but investing in a larger-scale vehicle, this ESC removes much of the guesswork with automatic settings and real-time telemetry feedback. The plug-and-play design requires no soldering, and the comprehensive manual guides you through setup step by step.
- What battery does this Spektrum ESC require? — The Firma 150A V2 accepts 3S through 6S LiPo batteries, with a maximum input voltage of 22.2V (6S fully charged). For maximum performance and to take advantage of Smart battery telemetry features, Spektrum Smart LiPo batteries with IC5 connectors are recommended, though standard LiPo batteries with EC5 connectors will also work for basic operation and ESC telemetry only.
- How does the Smart telemetry system work in the Firma 150A V2? — The ESC communicates with your Spektrum transmitter through a single wire connection, transmitting real-time data including RPM, motor temperature, battery voltage, battery capacity percentage, cell balance information and vehicle speed. This data appears on your radio's screen during runs, allowing you to monitor performance and make adjustments on the fly rather than waiting until after you've finished driving to review stored data.
- Is this ESC waterproof for off-road RC driving? — Yes, the Firma 150A V2 features a fully waterproof design rated for all-weather operation. The sealed electronics and waterproof casing allow it to perform reliably through dusty tracks, gravel, snow, mud and water crossings without damage or performance loss. This makes it ideal for hardcore off-road bashing and wet-weather RC racing.
- What is the difference between the Firma 150A V2 and other Spektrum ESCs? — The Firma 150A V2 is Spektrum's flagship 150-amp brushless ESC, designed specifically for large-scale vehicles requiring maximum power and performance. It features advanced Smart telemetry, a powerful M4 processor, and multiple programming options. Smaller-capacity Firma models (100A, 120A, 130A) are available for lighter-duty applications, whilst the 150A V2 is the pinnacle model for demanding users and high-performance setups.
- Can I use this ESC with my existing RC vehicle? — The Firma 150A V2 fits most large-scale RC vehicles with standard ESC mounting provisions. The compact dimensions (58 x 48 x 38mm) mean it's designed to fit modern RC chassis layouts. Compatibility depends on your specific vehicle, battery connector type and motor setup. Ensure your motor is rated for 150+ amps and your battery provides sufficient capacity for your intended use.
- Does this include a programming box? — No, the Firma 150A V2 does not include the optional Smart ESC Programming Box. However, it can be programmed using button programming (included with the ESC), or you can purchase the Programming Box separately for advanced trackside customisation. The SmartLink USB application is also available as a free computer-based alternative.
- What warranty does the Firma 150A V2 come with? — The Spektrum Firma 150A V2 Brushless Smart ESC includes a limited 1-year warranty covering manufacturing defects and component failures under normal use conditions.
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 Firma 150A V2 Brushless Smart ESC 6S, Orange: IC5 P-SPMXSE1155 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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