BiXPower C3 DC Power Connector Adapter – 5.5 x 2.5mm Female to 5.5 x 2.1mm Male
The BiXPower C3 (CNT-C3) is a compact, right-angle DC power connector adapter designed to convert a 5.5mm x 2.5mm male DC barrel plug into a 5.5mm x 2.1mm male DC barrel plug.
This convenient connector tip lets you use a compatible DC power adapter, rechargeable battery, or power cable with devices requiring a 5.5 x 2.1mm DC input connector, without replacing the entire power cable.
5.5 x 2.5mm Female Input
5.5 x 2.1mm Male Output
Right-Angle Design
Compact Connector
No Voltage Conversion
Product Overview
BiXPower CNT-C3 DC power connector adapter
Many DC-powered devices use similar-looking barrel connectors with different inside diameters. Although 5.5 x 2.5mm and 5.5 x 2.1mm plugs share the same outside diameter, the inner dimensions are different.
The BiXPower C3 adapter provides a simple physical connection between these two connector sizes. Its female input accepts a 5.5 x 2.5mm male plug, while its male output fits compatible 5.5 x 2.1mm female power sockets.
Key Features and Benefits
- Connector size conversion: Converts a 5.5 x 2.5mm male DC power plug to a 5.5 x 2.1mm male plug.
- Convenient right-angle design: L-shaped connector offers a compact connection arrangement.
- Easy to use: Simply attach the C3 connector to your existing compatible power plug.
- Versatile applications: Suitable for compatible DC-powered electronics, power adapters, and rechargeable battery systems.
- No electronics required: Passive connector adapter does not perform voltage conversion.
- Reusable accessory: Convenient for connecting compatible power sources to equipment using different barrel connector dimensions.
Connector Specifications
| Model |
BiXPower CNT-C3 |
| Product Type |
Right-angle DC power connector adapter |
| Input Connector |
5.5mm OD x 2.5mm ID female barrel jack |
| Output Connector |
5.5mm OD x 2.1mm ID male barrel plug |
| Connector Style |
90-degree / L-shaped |
| Voltage Conversion |
None – passive connector adapter |
| Power Source |
Compatible DC power adapter, battery, or DC cable |
| Electrical Compatibility |
Voltage, polarity, and current requirements must match the connected equipment. |
| Package Contents |
1 x BiXPower C3 DC connector adapter |
Detailed Product Images
C3 right-angle connector design
5.5 x 2.1mm male barrel connector dimensions
Rear female input: 5.5 x 2.5mm
Complete C3 connector adapter
How to Use the C3 Connector
The C3 connector is designed for simple plug-in installation. No cable cutting or soldering is required.
- Check your power cable: Make sure your existing DC power plug measures 5.5mm outside diameter and 2.5mm inside diameter.
- Verify your device connector: Confirm that your equipment requires a 5.5mm outside diameter and 2.1mm inside diameter male power plug.
- Check electrical compatibility: Verify that the power supply voltage, polarity, and available current are suitable for your device.
- Attach the C3 adapter: Insert your 5.5 x 2.5mm male power plug into the C3 female input jack.
- Connect to your device: Insert the C3 5.5 x 2.1mm male plug into the compatible equipment power input.
The C3 converts a 5.5 x 2.5mm male plug into a 5.5 x 2.1mm male plug.
Typical Applications
The BiXPower C3 connector can be used with compatible DC power equipment, including:
- DC power adapters and replacement power supplies
- Rechargeable battery power systems
- Compatible laptop and portable electronic equipment
- DC-powered monitors and small electronic devices
- Other equipment requiring a 5.5 x 2.1mm DC barrel plug
Compatibility depends on the exact connector dimensions and electrical requirements of the equipment. Not all devices within these categories use the same connector.
Understanding 5.5 x 2.5mm vs. 5.5 x 2.1mm Connectors
The first measurement refers to the outside diameter of the male DC barrel connector. The second measurement refers to the inside diameter.
| 5.5 x 2.5mm Connector |
5.5mm outside diameter, 2.5mm inside diameter |
| 5.5 x 2.1mm Connector |
5.5mm outside diameter, 2.1mm inside diameter |
| C3 Adapter Input |
5.5 x 2.5mm female |
| C3 Adapter Output |
5.5 x 2.1mm male |
Even though these connectors look similar, the different inner diameters can affect mechanical fit and electrical contact. Always use the correct connector dimensions for your device.
Important: This Connector Does Not Convert Voltage
The BiXPower C3 is a physical connector adapter only. It does not increase, decrease, regulate, or otherwise change DC voltage.
Before connecting your equipment, confirm that your battery or power adapter provides the correct voltage, polarity, and sufficient current for your device.
Important: The C3 female input is designed for a 5.5 x 2.5mm male plug. Do not force an incompatible connector into the adapter.
Frequently Asked Questions
What does the C3 connector convert?
It converts a 5.5 x 2.5mm male DC barrel plug to a 5.5 x 2.1mm male DC barrel plug.
Can I use the C3 with a rechargeable battery?
Yes, if the battery has a compatible 5.5 x 2.5mm male DC power connector and provides the correct voltage, polarity, and current for the connected equipment.
Does the C3 change 12V into 19V?
No. The C3 does not convert voltage. You must use a power source that already provides the voltage required by your equipment.
What is the difference between 5.5 x 2.1mm and 5.5 x 2.5mm?
Both connectors have a 5.5mm outside diameter. The difference is the inside diameter: 2.1mm versus 2.5mm. These dimensions affect connector fit and electrical contact.
Will the C3 work with any 5.5mm power plug?
No. The input requires a 5.5 x 2.5mm male connector. The output is a 5.5 x 2.1mm male connector. Both connector dimensions must match the intended connection.
Does the C3 reverse polarity?
No. The C3 is not a polarity-reversing adapter. Always verify the polarity of your power source before connecting equipment.
Does the package include a power cable or battery?
No. The package includes one C3 connector adapter only. Batteries, power supplies, and cables are sold separately.
Package Contents
1 x BiXPower C3 DC Power Connector Adapter (CNT-C3)
BiXPower provides rechargeable battery solutions, DC power adapters, connector tips, and power accessories for portable and professional electronic equipment.
