BiXPower CNT-C11 DC Power Connector Adapter for Apple PowerBook and iBook Laptops
9.0 x 3.5mm Male Connector to 5.5 x 2.5mm Female DC Jack
The BiXPower CNT-C11 is a DC power connector adapter designed for select older Apple PowerBook and iBook laptop computers.
This adapter converts a standard 5.5 x 2.5mm male DC barrel connector into a special 9.0 x 3.5mm male power connector used by certain vintage Apple laptops.
It provides a convenient way to connect compatible external rechargeable batteries, universal DC power adapters, and other suitable DC power sources to supported Apple laptop computers.
Important: This is a physical connector adapter only. It does not convert voltage.
Key Features
- Designed for older Apple laptops: Suitable for select Apple PowerBook and iBook models requiring this connector style.
- 9.0 x 3.5mm male connector: Special DC power plug for compatible Apple laptop power input ports.
- Standard 5.5 x 2.5mm female jack: Accepts a compatible 5.5 x 2.5mm male DC barrel connector.
- Easy connection: No soldering or modification required when used with compatible equipment.
- Compact adapter design: Convenient for use with compatible universal laptop power supplies and rechargeable batteries.
- Passive power connector: Transfers DC power without changing the supplied voltage.
Connector Size and Dimensions
The CNT-C11 laptop-side connector measures:
- Outer Diameter: 9.0mm
- Inner Diameter: 3.5mm
Please compare the connector dimensions and physical appearance with your original Apple laptop power connector before ordering.
CNT-C11 connector dimensions: 9.0mm OD x 3.5mm ID
Technical Specifications
| Product Model |
BiXPower CNT-C11 |
| Product Type |
DC power connector adapter tip |
| Laptop-Side Connector |
9.0mm OD x 3.5mm ID male connector |
| Power-Supply-Side Connector |
5.5mm OD x 2.5mm ID female DC jack |
| Voltage Conversion |
None. Passive connector adapter only. |
| Primary Application |
Selected older Apple PowerBook and iBook laptops |
| Compatible Power Source |
DC power supply with a compatible 5.5 x 2.5mm male connector and appropriate electrical output |
| Package Contents |
1 x CNT-C11 connector adapter tip |
Compatible Apple Laptop Models
The CNT-C11 is intended for certain older Apple PowerBook and iBook laptop computers that use this special round DC power connector.
Important Compatibility Notice
The following is a partial reference list. We have not independently verified every laptop model listed.
Please compare the connector images and dimensions above with your original laptop power connector to make sure CNT-C11 is the correct connector for your equipment.
Connector requirements can vary between laptop generations and revisions.
Apple PowerBook Series
- Apple PowerBook 1400 Series
- Apple PowerBook 2300 Series
- Apple PowerBook Duo 2300 Series
- Apple PowerBook 3400 Series
Apple PowerBook G3 Series
- PowerBook G3 Series (1997 Models)
- PowerBook G3 Series (1998 Models)
- PowerBook G3 Series (1999 Models)
- PowerBook G3 Series (2000 Models)
- PowerBook G3 Bronze Keyboard
- PowerBook G3 Early Original G3 Model
- PowerBook G3 FireWire
- PowerBook G3 Lombard
- PowerBook G3 Pismo
- PowerBook G3 Wallstreet
- PowerBook FireWire Series (M7712LL/A)
Apple iBook Series
- Apple iBook Blueberry
- Apple iBook Clamshell
- Apple iBook FireWire Series
- Apple iBook Graphite
- Apple iBook Indigo
- Apple iBook Lime Green
- Apple iBook Tangerine
Note: Inclusion in this reference list does not guarantee compatibility. Always verify the connector and electrical requirements for your specific laptop.
Standard 5.5 x 2.5mm Female DC Input
The rear side of the CNT-C11 connector features a 5.5 x 2.5mm female DC jack.
This female jack is designed to accept a standard 5.5 x 2.5mm male DC barrel plug from a compatible battery or power adapter.
Standard 5.5 x 2.5mm female DC jack
CNT-C11 adapter connection example
Important Connector Compatibility Notice
If your power supply or battery output connector is not a standard 5.5 x 2.5mm male DC connector, you cannot directly attach the CNT-C11 connector tip.
Please verify the connector size before purchasing.
How to Use the CNT-C11 Connector
If you are using this connector with a compatible BiXPower universal rechargeable battery or DC power adapter, follow these steps:
- Locate the standard connector: Find the 5.5 x 2.5mm male connector tip supplied with your compatible BiXPower battery or power adapter.
- Connect the standard tip: Attach the 5.5 x 2.5mm male connector to the battery or power adapter output cable.
- Attach CNT-C11: Insert the 5.5 x 2.5mm male connector into the female jack on the CNT-C11 adapter.
- Verify electrical compatibility: Make sure the power source provides the correct voltage, polarity, and sufficient current for your laptop.
- Connect to your laptop: Insert the CNT-C11 male plug into the compatible Apple laptop power input port.
- Power your device: Turn on the compatible battery or power adapter according to its instructions.
Using a BiXPower Universal Battery?
Some BiXPower universal batteries and power adapters include interchangeable connector tips. If your system includes a standard 5.5 x 2.5mm male tip, you may use that tip together with the CNT-C11 adapter, provided all electrical requirements are met.
Important: This Connector Does Not Convert Voltage
The CNT-C11 is a connector adapter only.
It does not contain electronics to increase, decrease, convert, or regulate DC voltage.
Before connecting your laptop, make sure the power source meets the laptop's electrical requirements:
- Correct DC output voltage
- Correct connector polarity
- Sufficient output current
- Sufficient output wattage
- Correct physical connector size
Using an incorrect voltage or polarity can damage your laptop or connected equipment.
Optional AC-to-DC Power Adapter
If you need an AC-to-DC power adapter, BiXPower offers a 24V 90W AC-to-DC power adapter with a compatible 5.5 x 2.5mm DC output connector.
This power adapter accepts suitable AC mains power and provides a 24V DC output.
Important: Before using a 24V adapter, verify that your laptop requires 24V DC and that its polarity and power requirements are compatible.
View BiXPower 24V 90W AC-to-DC Power Adapter
Frequently Asked Questions
Will the CNT-C11 fit every Apple PowerBook laptop?
No. Different Apple PowerBook generations may use different power connector sizes. Please verify your laptop's original connector dimensions and shape before purchasing.
Can I use this connector with an external rechargeable battery?
Yes, if the battery provides the correct voltage, polarity, and sufficient current, and has a compatible 5.5 x 2.5mm male DC output connector.
Does the CNT-C11 change the output voltage?
No. The CNT-C11 is a passive DC connector adapter. The output voltage remains determined by your battery or power adapter.
What connector is required on the power supply side?
The CNT-C11 requires a standard 5.5mm outer diameter x 2.5mm inner diameter male DC barrel connector.
Can I use this adapter with a newer Apple MacBook?
No. The CNT-C11 is not designed for MagSafe, MagSafe 2, MagSafe 3, or USB-C charging connections.
Does this product include an AC power adapter?
No. The CNT-C11 package contains the connector tip only. AC power adapters, rechargeable batteries, and other accessories are sold separately.
Package Contents
- 1 x BiXPower CNT-C11 DC Power Connector Adapter Tip
Note: Battery, power adapter, cable, and laptop are not included unless otherwise specified.
Related Power Products
Why Choose BiXPower?
BiXPower specializes in rechargeable battery systems, power adapters, DC power conversion products, and power connection accessories.
Our power products and connector solutions help customers connect compatible batteries and power supplies to laptops, electronic devices, and specialized DC-powered equipment.
The CNT-C11 offers a convenient power connector solution for owners of select vintage Apple PowerBook and iBook computers.
