User Manual for Spektrum 2-in-1 25A ESC/Receiver

Comprehensive user manual for the Spektrum 2-in-1 25A ESC/Receiver (SPMXSE3325RX). Includes instructions for binding, programming running modes, battery type settings, troubleshooting, and technical specifications.

Quick answers from the manual

Quick answer

The Spektrum 2-in-1 25A ESC/Receiver is a programmable speed controller for 1/18th-1/12th scale RC vehicles. It supports brushed motors and allows configuration of running modes (Forward/Brake/Reverse or Forward/Brake) and battery types (LiPo or NiMH) via a jumper cap. p. 1

Key actions

Binding the receiver p. 1
Programming battery type and running mode p. 1

First start

Ensure the battery is charged and the jumper cap is set to the correct battery type (LiPo or NiMH) before first use. p. 1

Problems and fixes

System powered ON but no motor function

Recharge/replace battery, check connections, check system programming.

p. 1

Maintenance and reset

If the system stops, disconnect the battery and let the system cool. p. 1

Technical specifications

Parameter	Value	Meaning	Pages
Continuous/Peak Current	25A / 100A	Current handling capacity	p. 1
Motor Type	380/390 Brushed	Compatible motor type	p. 1

Where to find it in the PDF

Specifications and Binding p. 1

Table of contents

Quick Guide

The Spektrum 2-in-1 25A ESC/Receiver is a combined electronic speed controller and receiver designed for 1/18th to 1/12th scale RC vehicles. This manual covers the essential setup, including binding to your transmitter, programming running modes, and configuring battery types.

Specifications

Continuous/Peak Current: 25A / 100A
Motor Type: 380/390 Brushed
Applications: 1/18th–1/12th On and Off Road
LiPo/NiMH Cells: 2S LiPo, 6–7 Cell NiMH
BEC Output: 6V, 3A (Switch Mode)

Binding

The transmitter and ESC/receiver are bound at the factory. If you need to rebind, follow these steps:

Power OFF the vehicle and transmitter.
Insert the supplied bind plug into the BND port.
Power ON the vehicle. The 2-in-1 LED will flash blue.
Power ON the SLT2 transmitter.
When bound, the 2-in-1 emits a series of tones and the blue LED becomes solid.
Remove the bind plug.
Power the transmitter and vehicle OFF then ON to verify binding.

Programming

Use the jumper cap to set the Running Mode and Battery Type.

Running Mode Setting

The system supports switching between F-B-R (Forward-Brake-Reverse) and F-B (Forward-Brake) modes. The default is F-B-R.

F-B-R Mode: Allows forward, brake, and reverse. To reverse, push the throttle trigger to the brake/reverse position, return to neutral, then push to reverse again.
F-B Mode: Allows forward and brake only.

Battery Type Setting

LiPo: Place the jumper in the LiPo position for 2S LiPo.
NiMH: Place the jumper in the NiMH position for 6-7 cell NiMH.

Low Voltage Protection

The system includes Low Voltage Cutoff (LVC) protection:

Below 6.4V: LED flashes slowly, max speed limited to 50%.
Below 6.0V: LED flashes slowly, motor stops running.

Troubleshooting

If you encounter issues, check the following:

System powered ON but no motor function: Recharge/replace battery, ensure connections are secure, check system programming.
System turns in wrong direction: This system is only compatible with vehicles requiring CCW motor rotation.
System stops: Check programming for voltage/battery, let system cool, check gearing for overheating.
System accelerates irregularly: Replace battery or wiring, check gearing.
Steering servo works but system does not run: Check receiver connections, test system apart from vehicle.

Manufacturer information

Spektrum

Brand profile

Manufacturer website https://www.spektrumrc.com/ Support https://www.spektrumrc.com/

Practical help

Common problems

System powered ON but no motor function or tone

Recharge or replace battery, ensure all connections are secure, check system programming.

System turns in the wrong direction

The system is only compatible with vehicles that require a motor with CCW rotation.

System stops during operation

Check programming for voltage/battery, disconnect battery and let system cool, check for overheating or gearing issues.

System accelerates irregularly

Replace with a high-power battery, replace damaged wiring, or adjust/replace gearing.

Before use

Ensure the battery is fully charged.
Verify all electrical connections are secure.
Confirm the transmitter and receiver are bound.
Check that the jumper cap is set to the correct battery type (LiPo/NiMH).
Ensure the running mode (F-B-R or F-B) matches your vehicle requirements.

Specs in practice

Continuous/Peak Current: 25A / 100A - Indicates the ESC's capacity to handle current loads.

Model compatibility

Compatible with 1/18th to 1/12th scale On and Off Road vehicles.
Only compatible with motors requiring CCW rotation.
Supports 2S LiPo or 6-7 Cell NiMH batteries.

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Manual page author

Michael Turner

Technical manual editor

Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.