BiXPower CNT-C28 MagSafe 1-Compatible DC Power Connector for Apple MacBook
Original MagSafe-Style Connector with Standard 5.5 x 2.5mm Female DC Input
The BiXPower CNT-C28 is a DC power connector adapter designed for select older Apple MacBook, MacBook Pro, and MacBook Air laptop computers using the original MagSafe 1 power connection.
It adapts a standard 5.5 x 2.5mm male DC barrel connector to a MagSafe 1-compatible laptop power connector.
This convenient adapter can be used with compatible external rechargeable batteries, universal laptop power adapters, and other suitable DC power sources.
BiXPower CNT-C28 MagSafe 1-compatible power connector
Key Features
- MagSafe 1-compatible design: For selected older Apple MacBook computers.
- Standard 5.5 x 2.5mm female jack: Accepts a compatible male DC barrel connector.
- Convenient power connection: Designed for use with suitable DC batteries and power adapters.
- Compact and lightweight: Convenient for portable power applications.
- No soldering required: Connects directly to compatible DC power cables.
- Passive adapter: Does not convert or regulate voltage.
Technical Specifications
| Product Model | BiXPower CNT-C28 |
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| Connector Type | MagSafe 1-compatible DC power connector |
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| Laptop-Side Connector | Original MagSafe-style connector |
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| Power Input Connector | 5.5mm outer diameter x 2.5mm inner diameter female DC jack |
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| Voltage Conversion | None |
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| Application | Select older Apple MacBook, MacBook Pro, and MacBook Air laptops |
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| Package Contents | 1 x CNT-C28 connector adapter |
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Compatible Apple Laptop Models
CNT-C28 is intended for selected Apple laptop computers that use the original MagSafe 1 connector, generally found on many models introduced before mid-2012.
Important Compatibility Notice
The following is a historical reference list and has not been individually verified for every laptop revision. Check the original connector type and electrical requirements before purchasing.
Apple MacBook Series
- MA254LL/A, MA255LL/A, MA472LL/A
- MA699LL/A, MA700LL/A, MA701LL/A
- MB061LL/A, MB062LL/A, MB063LL/A
- MB061LL/B, MB062LL/B, MB063LL/B
- MacBook A1181
- Selected MacBook A1278 models
Apple MacBook Pro Series
- MA463LL/A, MA464LL/A, MA090LL
- MA600LL, MA601LL, MA092LL/A
- MA609LL, MA610LL, MA611LL/A
- MA895LL/A, MA896LL/A, MA897LL/A
- Selected original MagSafe 1 MacBook Pro 13-inch models
- Selected original MagSafe 1 MacBook Pro 15-inch models
- Selected original MagSafe 1 MacBook Pro 17-inch models
- Selected Late 2006 and Mid/Late 2007 models
Apple MacBook Air Series
- MacBook Air A1237
- MacBook Air A1304
- Selected MacBook Air A1370 models
- Selected MacBook Air A1369 models
Reminder: A matching model number does not guarantee electrical compatibility. Verify the original connector generation, required voltage, and power rating.
Standard 5.5 x 2.5mm Female DC Jack
The rear of CNT-C28 features a standard 5.5 x 2.5mm female DC barrel jack.
This jack accepts a compatible 5.5 x 2.5mm male DC connector, such as the connector on a suitable BiXPower DC power cable.
CNT-C28 rear connector: 5.5 x 2.5mm female DC jack
How to Connect CNT-C28
The CNT-C28 converts the physical connector from a standard 5.5 x 2.5mm male barrel plug to a MagSafe 1-compatible laptop connector.
Connect CNT-C28 to a compatible 5.5 x 2.5mm male DC plug
- Confirm the laptop connector: Verify that your computer uses the original MagSafe 1 power connection.
- Check the power source: Confirm correct output voltage, polarity, current, and wattage.
- Connect the DC cable: Insert the 5.5 x 2.5mm male plug into the CNT-C28 female jack.
- Connect the laptop: Attach the CNT-C28 MagSafe-compatible connector to the computer.
- Verify operation: Confirm that the laptop recognizes the connected power source.
Connector Requirement
The CNT-C28 requires a compatible 5.5 x 2.5mm male DC plug. Other barrel connector sizes may not fit properly.
Important: CNT-C28 Does Not Convert Voltage
CNT-C28 is a passive connector adapter only.
It does not increase, decrease, convert, or regulate voltage or current.
Before connecting your MacBook, verify:
- Correct DC output voltage
- Correct polarity and connector wiring
- Sufficient current capacity
- Sufficient output wattage
- Correct MagSafe connector generation
Using an incompatible power supply can damage your laptop or connected equipment.
MagSafe 1 vs. MagSafe 2
The CNT-C28 is intended for the original MagSafe 1-style connector.
Some later MacBook models use MagSafe 2, which has a different physical connector.
If your computer requires MagSafe 2, consider the BiXPower CNT-C38 instead.
BiXPower CNT-C38 MagSafe 2-compatible connector — sold separately
View BiXPower CNT-C38 MagSafe 2 Connector
Not for MagSafe 3 or USB-C
CNT-C28 is not intended for modern MacBooks using MagSafe 3 or USB-C Power Delivery charging connections.
Frequently Asked Questions
What does CNT-C28 do?
It adapts a compatible 5.5 x 2.5mm male DC power plug to an original MagSafe 1-style connector for selected older Apple laptops.
Does CNT-C28 change the output voltage?
No. Your battery or power adapter must supply the correct voltage and power for the laptop.
Can CNT-C28 be used with a rechargeable battery?
Yes, if the battery system provides compatible voltage, polarity, sufficient power, and the correct connector. Charging functionality depends on the particular power source and laptop.
Does it work with all Apple MacBooks?
No. CNT-C28 is intended for selected older models using the original MagSafe 1 connector. It is not suitable for MagSafe 2, MagSafe 3, or USB-C connections.
Does the package include a power supply?
No. This product includes the CNT-C28 connector tip only. Power adapters, batteries, and DC cables are sold separately.
Package Contents
- 1 x BiXPower CNT-C28 MagSafe 1-compatible DC connector adapter
Battery, power adapter, cable, and laptop are not included.
Related Products
Why Choose BiXPower?
BiXPower specializes in rechargeable batteries, power adapters, DC power converters, and connector accessories for laptops and other electronic equipment.
The CNT-C28 offers a convenient connector solution for selected older Apple MacBook computers when used with a properly matched DC power source.
