Product Detail

Spektrum Firma 45A Lite ESC: Unleash Your Sprint Car's Speed! Smart Power for 2S Action.

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Feature-packed Firma™ Smart Lite ESCs deliver power and intelligence all-in-one, with no additional modules or links required. This waterproof 45 amp brushless ESC drives your 22S Sprint RTR through almost any racing conditions imaginable, with explosive acceleration and ultra-smooth performance — while feeding real-time telemetry straight to your Spektrum™ transmitter!

Like every component in the Spektrum™ Smart ecosystem, Firma™ Smart ESCs combine 'plug-and-play' simplicity with the ability to communicate with other Smart electronics, creating the best-performing RC system for your vehicle.

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 more confidence that your electronics are all operating at their best.

With Firma Smart ESCs, you'll be better connected to your vehicle than ever without installing extra components that work independently. You won't need additional wires, modules, or links. A Firma electronic speed control provides a one-wire solution for obtaining telemetry data such as battery voltage, ESC temperature, and throttle percentage.

Firma ESCs gather the data and send it to your transmitter in real-time instead of storing it for an after-run study. You can 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!

EC3™/EC5™ BACKWARDS COMPATIBLE

Firma™ ESCs feature IC™ series battery connectors. The IC series of connectors are designed from the ground up to provide a more solid connection, higher heat resistance, and effortless installation. When used with an IC3™ or IC5™ connector-equipped Spektrum™ Smart battery, the ESC can receive and transmit battery telemetry data. EC3 and EC5 are also compatible with Firma ESCs for basic operation and ESC telemetry.

WATERPROOF

The all-weather, waterproof design of Spektrum™ Firma™ Smart ESCs allows them to perform in nearly any terrain under almost any conditions. Firma ESCs keep you going through dust, gravel, snow, and water.

ONE-WIRE TELEMETRY

No need to connect multiple wires, sensors, modules, and links. With Firma™ ESCs, simple one-wire telemetry transmits a wide range of data directly to your transmitter in real-time, including battery voltage, ESC temperature, and throttle percentage.*

*See the compatibility chart for more information.

SMART TECHNOLOGY BATTERY DATA

When used with a Spektrum™ Smart LiPo battery, your Firma™ ESC provides battery telemetry that's automatically transmitted to your compatible Spektrum radio in real-time. On your transmitter screen, you'll be presented with helpful information such as battery voltage, ESC temperature, and throttle percentage.

MULTIPLE PROGRAMMING OPTIONS

Multiple programming options are available. Button programming can be used with nothing more needed. Using the Smart Firma™ ESC Programming Box, you can easily change settings at the track to suit driving conditions. An easy-to-use Smart Link USB Updating and PC Programmer app is also available.

FAST, POWERFUL M4 PROCESSOR

The Firma™ ESCs' 32-bit M4 processor produces higher resolution signal input and more accurate motor output.

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
High current adjustable BEC (6v or 7.4v @ 4 Amps)
Developed and designed by Spektrum™ engineers in partnership with the industry's leading ESC manufacturer
Ideal for Losi 22S Sprint cars running on 2S Lipo setups
Compact for easy installation in most applications
Ready to install — no soldering required
Rugged plastic case
Aluminum heat sink for high efficiency
Adjustable high-power BEC
Firmware updatable through the Smart ESC Programming Box
High heat-resistant IC™ connectors, backward compatible with EC™ connectors
Limited 1-year warranty