TypeC to Power Functions Adapter for LEGO®

Description

Overview

The Type-C (USB-C) to Power Functions Adapter by ConceptBrick is a compact and reliable power conversion solution designed to supply LEGO® Power Functions devices directly from modern USB-C power sources.

By converting USB-C power into a regulated 9V DC output, this adapter allows motors, lights, and other Power Functions accessories to operate with stable voltage and extended runtime, without relying on traditional battery boxes.

This solution is ideal for builders who require continuous operation, consistent performance, and reduced maintenance, especially in MOCs, exhibitions, and display models.

 

Technical Specifications

• Input Interface: USB-C

• Required Input: USB-C power source capable of 9V output (PD-compatible charger or power bank)

• Output Voltage: 9V DC (regulated)*

• Maximum Output Current: 2A

• Output Connector: LEGO Power Functions compatible plug

• Cable Length: Approx. 30 cm (11.8 in)

• Protections: Over-current, over-voltage, and thermal protection

• Certifications: CE, CPC, RoHS compliant

• Compatibility: LEGO Power Functions motors, lights, and accessories

 

Key Features

• Regulated 9V Power Output

        The adapter delivers a stable and regulated 9V DC output, ensuring consistent motor speed and reliable operation. This avoids the voltage drop commonly experienced with battery boxes as batteries discharge.

• USB-C Power Delivery Compatibility

        Designed to work with USB-C Power Delivery (PD)–enabled chargers and power banks, the adapter draws stable and efficient power from modern USB-C sources. This allows builders to take advantage of widely available PD power        supplies for long-duration, continuous operation, while completely eliminating the need for bulky battery boxes.

• Safe & Efficient

        Built-in overcurrent, overvoltage, and thermal protection, designed to meet CE, CPC, and RoHS safety standards.

• Extended 11.8-inch Cable

        Designed for greater flexibility and compatibility with various MOC setups, ensuring ease of use in different build scenarios.

Typical Applications

• Large-scale LEGO® MOCs

• Technic builds requiring consistent motor performance

• Train layouts and moving displays

• Exhibition and showroom models

• Long-term desk or shelf displays

 

Usage Notes

• A USB-C power source capable of supplying 9V output is required.

• Do not connect the adapter to multiple power sources simultaneously.

• This product is intended only for LEGO Power Functions devices. It must not be used to power non-compatible electronics.

• Avoid motor stalling or short circuits in connected devices.

 

Why Choose This Adapter

• Stable, regulated power for reliable performance

• Long-term operation without battery management

• Compatible with modern USB-C power infrastructure

• Designed for advanced builders, MOC creators, and display setups

Technical Summary

The ConceptBrick Type-C to Power Functions Adapter is a battery-free power solution designed for LEGO® Power Functions systems.
It converts USB-C power into a regulated 9V output with built-in protection, making it ideal for builds where frequent battery replacement is impractical.

Tested and well received by the LEGO® MOC community, this adapter enables stable, long-duration operation for demanding MOCs and display models.
By using widely available USB-C chargers and power banks, it improves flexibility, reduces power interruptions, and lowers long-term operating costs compared to traditional battery boxes.

 

!!! IMPORTANT: It is strictly prohibited to connect the TypeC (USB C) plug to electrical appliances and simultaneously connect the brick plug to power supply devices. If the plug or connecting wires are damaged, please stop using them immediately. Otherwise, any consequences arising from this will be the sole responsibility of the user.

 

*Requires chargers, power banks, and other power supply devices that support PD (Power Delivery) and can output 9V voltage, as shown in the diagram below:

 

 

FAQ

Q: Can this replace a LEGO battery box?
A: Yes. This adapter is designed as a continuous power alternative to traditional battery boxes.

Q: Does it work with Powered Up?
A: No. It is compatible only with LEGO Power Functions systems.

Q: What power source is required?
A: A USB-C power source capable of supplying 9V output.

 

 

LEGO® is a trademark of the LEGO Group, which does not sponsor, authorize, or endorse this product.
For more information about LEGO products, please visit the official LEGO website.

This adapter is designed to work with USB-C Power Delivery (PD) power sources.
Learn more about USB-C and Power Delivery standards from the USB Implementers Forum (USB-IF).

This product is designed for LEGO Power Functions systems only.
It is not compatible with LEGO Powered Up, Control+, or third-party electronic systems.