Product Description
Motorola Vertex PA-55C 5V AC Power Adapter – AAJ71X003
The Motorola Vertex PA-55C is a 5-watt AC/DC wall power adapter used with compatible Motorola and Vertex Standard charging equipment. It features a North American two-prong wall plug and provides a regulated 5V DC, 1A center-positive output.
The PA-55C supports 100–240V AC input, allowing it to operate across a wide voltage range. A physical plug adapter may be required when used outside North America.
Important: This listing is for the PA-55C power adapter only. A charging cradle, radio, battery, and other accessories are not included.
Key Features
- Motorola Vertex Standard AC power adapter
- Manufacturer part number AAJ71X003
- North American two-prong US wall plug
- Universal 100–240V AC input
- Regulated 5V DC, 1A output
- 5-watt power rating
- Center-positive DC polarity
- Fixed DC output cable
- Compact wall-mounted design
- For indoor use in dry locations
Charging Applications
The PA-55C is commonly supplied with compatible Motorola Vertex Standard desktop charging equipment, including certain VAC-UNI-C charging kits and CD-58 desktop charger configurations.
The adapter supplies power to the compatible charging cradle. Radio and battery compatibility is determined by the charger base and installed charging insert or battery spacer.
Specifications
| Brand | Motorola / Vertex Standard |
| Model | PA-55C |
| Manufacturer Part Number | AAJ71X003 |
| Power Supply Model | MU18-D160100-CS |
| Product Type | AC/DC wall power adapter |
| AC Input | 100–240V AC, 50/60Hz, 0.6A |
| DC Output | 5V DC, 1.0A |
| Power Rating | 5 watts |
| Output Polarity | Center positive |
| Wall Plug | North American two-prong US plug |
| Efficiency Level | Level V |
| Use | Indoor use only |
What Is Included?
- One Motorola Vertex PA-55C AC power adapter, part number AAJ71X003
Not included: Charging cradle, radio, battery, charging insert, or other accessories.
Important Compatibility Information
Check the complete part number before ordering.
The PA-55C AAJ71X003 should not be confused with the PA-57B, PS000042A11, or other similarly named Motorola power supplies. Connector type, voltage, polarity, and charging applications can differ.
Motorola Charger and Power Adapter Guide
Not sure which Motorola power supply you need? Compare part numbers, input and output ratings, connector types, and replacement options in our charger guide.
Frequently Asked Questions
Does the PA-55C have a US wall plug?
Yes. The PA-55C AAJ71X003 has a North American two-prong wall plug.
What is the output of the PA-55C?
The adapter provides a regulated 5V DC output at 1.0A, for a total output of 5 watts.
Can the PA-55C operate on 220V AC?
Yes. The adapter accepts 100–240V AC input at 50/60Hz. A physical wall-plug adapter may be required outside North America.
Is a charging cradle included?
No. This listing includes only the PA-55C AC power adapter.
Is the PA-55C the same as the PA-57B?
No. These are different Motorola Vertex power supplies. Always match the complete part number, electrical specifications, connector, and charging equipment before ordering.
How can I confirm compatibility?
Compare the PA-55C part number, 5V DC output, center-positive polarity, and connector with the specifications printed on your existing adapter and charging equipment.
Need Help Confirming Compatibility?
Send HiTech Wireless a photo of your existing adapter and charger label, and we will help identify the correct replacement.