Traxxas BL-2s Brushless Electronic Speed Control TRX3383

Overview

The Traxxas BL-2s Brushless Electronic Speed Control is a premium ESC designed to deliver all the benefits of brushless technology in a compact, waterproof package that's perfect for RC enthusiasts throughout the UK. Whether you're piloting a Traxxas Mini Maxx, Mini Slash, or other compatible brushless RC car, this speed control combines smooth, effortless power delivery with the safety and convenience features that have made Traxxas the trusted name in RC racing and bashing. The BL-2s brings speed, acceleration, and virtually maintenance-free operation at an affordable price point, making it an excellent choice for anyone looking to upgrade their RC setup or replace a damaged ESC.

This brushless speed control is optimised for 7-cell NiMH and 2S LiPo batteries, delivering all-day fun, battery after battery, with consistent performance whether you're running a single pack or multiple batteries throughout a day at the track or field. Drivers experience smooth, effortless power with added punch for tyre-shredding burnouts and blazing fast speed, while the waterproof construction ensures reliability in various weather conditions. The BL-2s is built with the same engineering excellence you expect from Traxxas, making it a genuine upgrade for serious RC car UK enthusiasts and casual bashers alike.

Beyond raw performance, the BL-2s prioritises safety and ease of use. Built-in low-voltage detection, thermal shutdown protection, and the innovative EZ-Set one-button programming system make this speed control reliable and easy to operate for drivers of all skill levels. Whether you're an experienced racer, a weekend basher, or introducing the next generation to RC car UK hobby, the BL-2s delivers the performance and protection you need.

Key Features

• Fully Waterproof Construction — The BL-2s speed control is completely waterproof, protecting the internal electronics from moisture, spray, and wet conditions. This ensures your RC car can handle outdoor environments, puddles, and morning dew without risking electrical damage, giving you confidence to drive in varying weather conditions across the UK.
• Two-Stage Low Voltage Detection — Built-in protection for lithium polymer (LiPo) batteries with two-stage low voltage detection that automatically monitors battery health and alerts you when voltage drops. This switchable feature can be enabled or disabled based on your battery type and driving preferences, extending battery lifespan and preventing over-discharge damage.
• Patented Training Mode™ — The revolutionary Training Mode reduces power output by 50% for new or younger drivers, allowing them to learn control and build confidence safely. When they're ready to unleash full-throttle action, simply change profiles to activate Sport or Race mode. This makes the BL-2s an exceptional choice for families introducing children to RC hobby.
• Three Programmable Drive Profiles — Choose between Sport Mode (100% forward, 100% brake, 100% reverse), Race Mode (100% forward, 100% brake, no reverse for competitive racing), or Training Mode (50% forward, 100% brake, 50% reverse). Each profile tailors throttle response and behaviour to your specific driving situation.
• EZ-Set® One-Button Programming — Setup and configuration is incredibly simple thanks to Traxxas's acclaimed EZ-Set system. Programme all your preferred settings with a single button, just like other Traxxas speed controls, eliminating complex menus and complicated procedures.
• Two-Stage Thermal Shutdown Protection — Advanced temperature monitoring protects the BL-2s from overheating during intense driving sessions. The two-stage thermal protection system kicks in automatically to prevent damage when temperatures rise, ensuring your ESC survives multiple batteries of continuous use.
• Large Aluminium Heatsink — An oversized aluminium heatsink dissipates heat efficiently away from critical components, allowing sustained high-power operation without thermal throttling. The heatsink's substantial size ensures the BL-2s runs cool even during extended racing sessions or aggressive driving.
• Built-In Auxiliary Fan Output — Connect an optional cooling fan to the auxiliary fan output port for enhanced thermal management during extreme driving conditions. This accessory port allows you to add active cooling to keep the ESC operating at peak performance during competition or intense practice sessions.
• Multi-Colour Status LED — An intelligent LED indicator displays the ESC's operational status, battery condition, and programming mode using multiple colours. This visual feedback system makes it easy to understand what your speed control is doing at a glance without needing to access the transmitter.
• Keyed Motor Connector — The quick-connect motor plug features keyed design that prevents accidental incorrect connections. This safety feature ensures your motor always connects properly, reducing the risk of electrical damage from reversed polarity.
• 6.0V 3-Amp BEC (Battery Elimination Circuit) — The integrated BEC provides regulated 6.0V power at 3 amps to your receiver and servos, eliminating the need for a separate battery pack and simplifying your wiring. This reliable power source delivers consistent voltage across full throttle operation.
• Reverse Delay with Lockout — The BL-2s includes programmable reverse delay and lockout functionality, preventing accidental reverse engagement during forward driving. This safety feature is particularly valuable for Racing Mode where reverse is disabled entirely.

Technical Performance

The Traxxas BL-2s Brushless Electronic Speed Control represents a significant advancement in brushless ESC technology for small-scale RC vehicles. With its compact 39 x 59 x 31mm (WxDxH) case size and lightweight 87-gram construction, the BL-2s fits seamlessly into most ready to run RC cars and conversion kits. The speed control accepts input voltage from either NiMH battery packs with 6-7 cells (7.2 - 8.4V) or 2-cell LiPo battery packs (7.4V), making it incredibly versatile for different battery technologies and driving preferences. The 16-gauge input wiring handles current demands without voltage sag, whilst the 26-gauge receiver harness integrates cleanly into compact chassis. The quick-connect motor plug with keyed design ensures reliable motor connections, eliminating potential polarity errors that could damage expensive brushless motors. The BEC (Battery Elimination Circuit) output of 6.0V at 3 amps powers your receiver and servos independently, with switchable low-voltage detection that protects LiPo batteries from overdischarge damage. The Traxxas High-Current battery connector provides a robust connection point for your battery pack, capable of handling the current draw of modern brushless power systems. Whether you're running the BL-2s in a Mini Maxx, Mini Slash, or other compatible Traxxas platform, this ESC delivers consistent performance, smooth acceleration curves, and reliable thermal management through its dual-stage protection system.

What's in the Box

• Traxxas BL-2s Brushless Electronic Speed Control (assembled and tested)

What You Need to Complete

• Brushless motor compatible with your vehicle (typically included in RTR kits)
• NiMH battery pack (6-7 cells, 7.2 - 8.4V) or 2S LiPo battery pack (7.4V)
• RC car or truck chassis compatible with the BL-2s (such as Traxxas Mini Maxx or Mini Slash)
• Battery charger (not included)
• Optional: Auxiliary cooling fan for extended racing sessions

Frequently Asked Questions

• Is the Traxxas BL-2s suitable for beginners and younger drivers? — Yes, the BL-2s is excellent for beginners thanks to its patented Training Mode, which reduces power output by 50% for new or younger drivers. This allows them to learn control and build confidence safely before progressing to full-power Sport or Race modes. The EZ-Set one-button programming is also much simpler than traditional ESC setup procedures, making configuration straightforward for inexperienced users.
• What battery does the BL-2s need? — The BL-2s is optimised for either NiMH battery packs with 6-7 cells (delivering 7.2 - 8.4V) or 2-cell LiPo battery packs (7.4V). This flexibility allows you to choose between the affordability and durability of NiMH batteries or the higher performance and lighter weight of LiPo batteries depending on your priorities.
• Is the BL-2s waterproof? — Yes, the BL-2s is fully waterproof, protecting all internal electronics from moisture and water. This waterproof construction makes it reliable for outdoor driving in wet conditions, near water, or during UK weather when puddles are inevitable. However, waterproof does not mean fully submersible — avoid intentional full dunking.
• What happens if my BL-2s overheats? — The BL-2s features two-stage thermal shutdown protection that automatically activates when temperatures rise excessively. The first stage reduces performance slightly to shed heat, whilst the second stage provides full protection by limiting power. The large aluminium heatsink dissipates heat efficiently, and you can optionally add an auxiliary cooling fan for even better thermal management during extended racing sessions.
• Can I use the BL-2s in different driving modes? — Absolutely. The BL-2s offers three programmable drive profiles: Sport Mode (full forward, brake, and reverse for general driving and bashing), Race Mode (full forward and brake with no reverse for competitive racing), and Training Mode (50% power for learners). You can programme these profiles using the EZ-Set one-button system and switch between them as needed.
• What is the difference between the BL-2s and other Traxxas speed controls? — The BL-2s is specifically designed for smaller-scale brushless vehicles like the Mini Maxx and Mini Slash, optimised for 2S LiPo and NiMH batteries. Traxxas offers other ESCs for larger vehicles and different battery configurations. The BL-2s distinguishes itself with the patented Training Mode, affordable pricing, waterproof construction, and simple EZ-Set programming that makes it accessible to drivers of all experience levels.
• Do I need to buy anything else to use the BL-2s? — The BL-2s is an ESC only, so you'll need a compatible brushless motor (usually included in RTR kits), a battery pack, and a vehicle chassis. The integrated BEC powers your receiver and servos, so you don't need a separate battery for those components. If you're installing this in an existing vehicle, ensure your motor and vehicle are BL-2s compatible.

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 Traxxas BL-2s Brushless Electronic Speed Control TRX3383 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.