1. Introduction
This manual provides essential information for the safe and efficient use of your Kircuit 29.4V 2A AC/DC Adapter, Model MDA10129402000. This adapter is designed to convert AC power into the DC power required by compatible devices, such as mopeds and other lithium-ion battery-powered equipment. It serves as a reliable power source for operating your device or charging its battery from standard electrical outlets. The adapter is built with dynamic IC, charger IC, and a power fuse for rapid charging and overcharge protection, ensuring optimal performance and safety.
2. Safety Information
Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in electric shock, fire, or damage to the product or connected devices.
- Indoor Use Only: This adapter is designed for indoor use. Do not expose it to rain, moisture, or extreme temperatures.
- Proper Voltage: Ensure the input voltage (100V-240V AC) matches your local power supply.
- Avoid Overloading: Do not connect devices that exceed the adapter's output specifications (29.4V, 2A).
- Ventilation: Ensure adequate ventilation around the adapter during use. Do not cover it with cloths or place it in enclosed spaces.
- Handle with Care: Do not drop, disassemble, or attempt to repair the adapter. Refer all servicing to qualified personnel.
- Disconnect When Not in Use: Unplug the adapter from the power outlet when not in use for extended periods.
- Cable Integrity: Regularly inspect the power cords for any damage. Do not use if cables are frayed or damaged.
3. Package Contents
Verify that all items are present in your package:
- 1 x Kircuit 29.4V 2A AC/DC Adapter Unit
- 1 x AC Input Power Cord (Type A - 2 pin, North American)
The image below shows the adapter unit and its components.

Image: The Kircuit AC/DC adapter unit with its detachable AC input power cord and integrated DC output cable.
4. Product Overview
The Kircuit 29.4V 2A AC/DC Adapter is a compact and portable power solution. It features an anti-interference magnetic ring on the DC output cable for enhanced reliability and stability of system operation. The adapter block itself houses the power conversion circuitry.

Image: Detailed view of the adapter showing its dimensions and the anti-interference magnetic ring on the DC output cable.
The adapter block measures approximately 4.2 inches in length, 1.8 inches in width, and 1.2 inches in height. The DC output cable is approximately 79.3 inches long, and the AC input cable is approximately 44.3 inches long.
5. Setup
Follow these steps to set up your AC/DC adapter:
- Connect AC Input Cable: Take the AC input power cord and connect its 2-pin female end to the corresponding input port on the adapter unit. Ensure a firm connection.
- Connect DC Output Cable: Connect the DC output connector (the proprietary connector at the end of the integrated cable) to the charging port of your compatible device (e.g., moped, lithium-ion battery). Ensure the polarity is correct and the connection is secure.
- Plug into Power Outlet: Insert the 2-pin AC plug of the power cord into a standard wall electrical outlet (100V-240V AC).

Image: The AC input cable being connected to the adapter unit.

Image: The 2-pin AC input plug for connecting to a wall outlet.
6. Operating Instructions
Once the adapter is properly set up, it is ready for operation:
- Power On: After plugging the AC input cord into a wall outlet and connecting the DC output to your device, the adapter will begin to supply power or charge the connected battery.
- Charging Indication: If your device has a charging indicator, observe it to confirm that charging is in progress. The adapter itself may have an LED indicator (typically blue) to show it is receiving power.
- Disconnecting: To stop charging or powering your device, first disconnect the DC output connector from your device, then unplug the AC input cord from the wall outlet.

Image: The adapter in use, plugged into a wall outlet and powering a device.
Always ensure that the adapter is used with compatible devices that match its voltage and current specifications to prevent damage.
7. Maintenance
Proper maintenance ensures the longevity and safe operation of your adapter:
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a soft, dry cloth to wipe the surface. Do not use liquid cleaners or solvents.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and moisture when not in use. Avoid wrapping cables too tightly to prevent damage.
- Inspection: Periodically inspect the adapter unit and both power cords for any signs of damage, such as cuts, fraying, or bent pins. If any damage is found, discontinue use and replace the adapter.
8. Troubleshooting
If you encounter issues with your adapter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Adapter not powering device/charging battery | No power from outlet; loose connection; incompatible device; damaged adapter/cables. | Check if the wall outlet is functional. Ensure all connections (AC input to adapter, DC output to device, AC plug to wall) are secure. Verify device compatibility. Inspect adapter and cables for damage. |
| Adapter gets excessively hot | Poor ventilation; overloaded; internal fault. | Ensure adapter has adequate airflow. Disconnect and check if the connected device's power requirements exceed the adapter's specifications. Discontinue use if overheating persists and seek replacement. |
| Device not fully charging | Device battery issue; adapter not providing sufficient current; incorrect voltage. | Consult your device's manual for battery health. Ensure the adapter's output specifications match your device's charging requirements. |
If the problem persists after trying these solutions, contact customer support.
9. Specifications
| Feature | Specification |
|---|---|
| Brand | Kircuit |
| Model | MDA10129402000 |
| Input Voltage | 100V-240V AC |
| Output Voltage | 29.4 Volts DC |
| Output Current | 2 Amps |
| Power Source | Corded Electric |
| Connector Type | Proprietary DC connector, 2-pin AC input |
| Compatible Devices | Mopeds, Lithium-ion Battery-powered Devices (requiring 29.4V 2A) |
| Special Feature | Travel-friendly design, Overcharge Protection |
| AC Plug Type | Type A - 2 pin (North American) |
| Manufacturer | Shenzhen Waweis Technology Co., Ltd |
10. Warranty Information
This Kircuit product is covered by a standard manufacturer's warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary. Please retain your proof of purchase for warranty claims.
The warranty does not cover damage caused by misuse, accident, unauthorized modification, or improper installation. For detailed warranty information, please refer to the documentation provided with your purchase or contact Kircuit customer support.
11. Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact Kircuit customer support through the retailer where the product was purchased or visit the official Kircuit website for contact information.
When contacting support, please have your product model number (MDA10129402000) and proof of purchase readily available.