DC Power Extension Cable
- Universal Compatibility: 5.5×2.1mm male to female design — an industry standard for extending 12V/24V DC power.
- 100% Pure Copper Wiring: These are purely copper conductors, giving lower resistance, less voltage drop, and better durability.
- Heavy-Duty Gauges: Selects thicker wires — 16-24AWG for long runs and high-current applications.
- Extended Length Range: Ranges are available in 3ft to 33ft (10m), suitable for distant installations such as CCTV or LED strips.
- Right-Angle Option: 90-degree plug saves space and reduces strain, supporting neater installations in tight spaces.
- Application-Optimized: CCTV DC power extension cable—solar DC extension cable; or LED strip DC Extension Cable
- Better Durability: Premium Quality Flexible PVC Jacket is highly resistant to abrasion, weather, and repeated bends.
- Quality Control: Each cable is tested for continuity, insulation, and pull strength to confirm a secure connection.
- B2B & Bulk Ready: Manufacturer-Direct with wholesale pricing, flexible MOQs, and custom length/gauge options.
- Factory-Direct Reliability: As an ISO 9001:2015-certified factory, we deliver reliable quality and fast delivery.
Reliable DC power extension cables to Expand Your Horizons, Empower You Possibilities
Power supplies are not always readily accessible in commercial and industrial applications. One of the greatest obstacles faced when installing a CCTV system, an array of LED lighting, networking racks, or digital signage is related to the short range of most standard power adapters. To fill this gap, we need a simple, cheap yet essential solution: a DC Extension Cord that can provide stable power where it is needed. Bespokecable is a manufacturer of high-quality, reliable DC Power Extension Cables , designed with B2B durability, safety, and performance in mind.
Our DC Extension Cable collection has the proper configuration and simple life to deliver reliable performance, enabling you to increase your energy supply from a low-voltage DC device. The heart of our product is a DC Power Extension Cable 12V with a universal DC 5.5mm x 2.1mm male-to-female connector. This design makes it easy for you to expand the coverage of your current power adapter without running new wires or moving power outlets — a costly project. Our cables are designed for harsh environments with everyday use, if you are an integrator, installer, or distributor in security and surveillance, retail, or office automation.
Technical Specifications Table
| Feature | Specification |
| Product Type | DC Power Extension Cable, DC Extension Cord |
| Connector Type | Male: DC Plug (5.5mm x 2.1mm) / Female: DC Jack (5.5mm x 2.1mm) |
| Connector Style | Straight Plug (Model EXT-DC5521-SF) / Right-Angle Plug (Model EXT-DC5521-RF) |
| Compatibility | For devices with a DC 5.5mm x 2.1mm input jack only |
| Standard Lengths | 3ft, 6ft, 10ft, 16.4ft (5m), 20ft, 33ft (10m) |
| Conductor Gauge (AWG) | 24AWG, 22AWG, 20AWG, 18AWG, 16AWG (2-core) |
| Conductor Material | 100% Premium Pure Copper (Oxygen-Free) |
| Rated Voltage | Up to 12V DC (Compatible with 12V/9V/6V/5V adapters) |
| Jacket Material | Flexible, Durable, Eco-Friendly PVC |
| Color Options | Black, White |
| Polarity | Center-Positive (+) |
Products Show & Comparison of DC Power Extension Cable
- Four items for your reference.
Designed to Deliver Safety, Performance, and Durability
Your power delivery is our top concern. DC Power Extension Cord made from 100% pure copper conductors instead of aluminum-clad copper (CCA). When doing this, it ensures that the resistance is lower and there’s almost zero voltage drop over a hyperlong distance, making it a safer and much more stable power supply than with cheap, inferior materials. Every cable undergoes a stringent quality check, while the high-quality, environmentally friendly PVC jacket is both flexible and resistant to abrasion, weather, and frequent bending. The connectors are precision-machined with solid brass contacts for a secure connection that prevents accidental disconnections, which could result in device downtime. Its sturdy construction ensures a reliable connection and protects your equipment and investments.
Ultimate Customization for Your B2B Needs
Because we are a direct manufacturer, one size does not fit all. Our focus with our DC Power Extension Cable product line was being flexible:
- Available Lengths: 3ft, 6ft, 10ft, 16.4ft (5m), 20ft, 33ft (10m)
- Wire Gauge (AWG):AWG 24,22,20,18,16 Choose the right gauge: Thicker wires (lower AWG, e.g., 16 or 18) must be used for long wires (> 33ft) and/or high-current devices to avoid excessive voltage drop.
- Color options: Standardly comes in black and white and suits rooms of all decors or professional setups.
- Custom Solutions: We provide full customization for bulk orders, such as lengths, jacket colors, and packaging
Wide Range of Professional Applications
Compatible with any 5.5×2 DC 12V, 9V, 6V, or 5V device powered via an International power supply. Its primary applications include:
- Security & Surveillance: Power extended to CCTV cameras and IP cameras placed in far corners.
- Commercial Lighting Solutions: Feeding LED light strips and low-voltage lighting installations in commercial applications.
- Office & IT: Allowing for routers, monitors, printers, and recording equipment.
- RETAIL & DIGITAL SIGNAGE: Driving Displays and Kiosks from a Central Power Source.
What are the Reasons to use Bespokecable as your DC Extension cable supplier?
With Bespokecable being your partner factory, you choose a trustworthy source factory with 20+ years (and counting) of expertise. We offer:
- Direct-to-Manufacturer Pricing: This means you pay wholesale prices upfront for bulk orders, eliminating any middleman markup.
- Robust Quality Assurance: All cables are manufactured to the highest specifications under ISO 9001:2015 processes.
- Fast & Flexible Supply: Supported with typical and custom creation lead times.
- We have a B2B Focus: Our structure is tailored to businesses and the compliance and scale you need.
Power your projects with confidence. With our DC Extension Cables, feel free to reach out to Bespokecable and get yourself a quote today!
A DC Extension Cable simply extends the distance between a DC power adapter (wall wart) and the device it is powering. Suitable for CCTV cameras, LED Strips, Routers, and monitors that are located away from a power outlet (often needed due to cable length).
Yes, you can cascade two or more of our Male-to-Female DC Extension Cables together to achieve a longer length. Just keep in mind that each connection and additional length adds to the total resistance. For lengthy runs, a heavier wire gauge (16 AWG or 18 AWG) is important to avoid voltage drop.
This is dependent on your device’s amperage (current) and the overall length of the cable. For long cables (33ft/10m or more) & higher current devices, select a lower AWG, such as the 16 AWG or 18 AWG. You can use 22 AWG or 24 AWG for short runs (3-6ft) with low-power devices. A thicker wire reduces voltage drop, enabling a steady power supply to your device.
That would be the generic version. With a right-angle plug, the Right Angle DC Extension Cable is for installations where space is tight behind or to the sides of the device you are powering (for example, wall-mounted TVs or security cameras) and needs to run flush with your mounting surface.
No. Made for the DC 5.5mm x 2.1mm connector only. Not with a 5.5mm x 2.5mm plug type (or any other). MUST check the jack size of your device before buying any accessory
It’s rated up to 12V DC (and yes, we do recommend using a Good power adapter with it), but it is completely OK to use lower voltage power adapters such as 9V, 6V, or even 5V as long as the connector size (5.5×2. 1mm) and polarity (center-positive) match.
Sure, as a B2B tailored manufacturer, Bespokecable does. DC Extension Cords are custom-manufactured to your project or branding specifications, including length (over 300 feet), wire gauge, and jacket color (beyond our normal black/white options).
Our MOQ can be met for different business needs. Minimum Order Quantities (MOQs) can be low for standard items. The MOQ for customized cables varies with specifications. Contact our sales team to learn more about your volume needs.
First, make sure the sizes match (5.5 x 2.1mm). Press the male plug into the female jack until it clicks, or is seated all of the way down. Avoid forcing it. If the installation is permanent, you can use cable ties or clips for strain relief at the connection point.
Bespokecable cables use 100% pure copper instead of CCA (Copper-Clad Aluminum), which can cause more resistance and heat than other metals, making it safer to use. We are a direct factory and can provide superior quality control, competitive bulk pricing, and all conceivable customizations for B2B clients, allowing you to receive an effective product as per your requirements.
More About DC Power Extension Cable of Bespokecable
Quality & Testing
Bespokecable practices a multi-stage quality assurance and testing protocol for every DC power extension cable 5.5mm x 2.1mm manufactured by us to ensure it is suitable under all conditions, highly durable, and dependable in terms of safety and performance. It starts with materials; We use only 100% pure copper conductors (not CCA) to ensure the best electrical contact, lowest resistance and voltage drop, as well as safe, stable power transfer over long distances. It features a rugged, eco-friendly PVC jacket stripped of any fussy coatings to resist repeated bending, abrasion, and various environmental conditions.
Production batches undergo extensive internal testing before being shipped. Such checks include continuity and polarity tests to verify proper wiring, high-potential (hipot) tests to ensure insulation integrity and prevent short circuits, and pull tests on molded connectors to prevent them from succumbing easily to physical stress. We also carry out additional tests on jacket durability for applications such as a CCTV DC power extension cable that may be installed outdoors or in harsh conditions. This systematic redundancy ensures that all cables, whether for security systems or an LED strip DC extension cable installation, deliver optimum power and a long service life, backed by ISO 9001:2015-accredited manufacturing processes.
Installation Guide
How to safely install your Bespokecable DC power extension cable 5.5mm x 2.1mm: To achieve the best performance, please follow these steps:
- Check Compability: Make sure the power adapter and device both use a standard DC 5.5mm x 2.1mm connector (center-positive (+) polarity). An incorrect plug can damagethe your equipment.
- Power Down: Make sure both the DC power adapter and the device being powered (CCTV camera, LED controller, etc.) are off or unplugged before making any connections.
- Insert Male and Female Ends: Begin by firmly inserting the female (jack) end of your extension cable into the male plug of your existing power adapter. Then gently insert the male (female) connector side of the extension cable into the DC output port until both ends are fully engaged and locked in place to prevent looseness or disconnection during operation.
- For installation in areas where a clean finish is ideal, such as LED strips used with the cable as an extension to other DC-powered items or when connecting the cable to CCTV, DC power extension cables use cable clips/ties and conduits to route the cable properly without sharp bends or pinch points. It reduces strain on the connectors and cable itself.
- Power On: After connecting everything, plug the power adapter into a wall socket and switch on your device
Noted: Never exceed the cable power rating. Select the right wire size (AWG) — depending on your desired run length and required current, you will need to use a thicker-gauge cable (perhaps an 18 or 16 AWG) for very long runs to avoid excessive voltage drop. Do not daisy-chain multiple extension cables because the total effective length decreases, leading to power loss and overheating.
Customer Feedback
“I have seen and used my fair share of those generic DC power extension cables, 5.5mm x 2.1mm options that I felt were somewhat flimsy and caused voltage drop on cameras at the end of long runs.” The exception was with opening a Bespokecable’s cables, which ruined everything. In particular, I use the heavy-duty 18 AWG cable as my choice for CCTV DC power extension cable. Notice how thick the wire is? I no longer have low-power warnings on my cameras, even over 30-foot runs—they’re pure copper. For some applications, careful connectors are crucial for reliable 24/7 surveillance as they fit much tighter and do not work loose over time.”
“Power management for the long runs of our DC extension cable from strip lights was a constant headache for us on all our commercial LED lighting projects. This would result in the LEDs on the far end of the chain being noticeably dim. I ended up going with 16AWG extension cables from Yellow Jacket, after one of my fellow contractors recommended Bespokecable, and they completely resolved the issue. The thicker-gauge wire provides stable voltage from the driver to the very tip of the strip, so you get consistent brightness and color. But not only is the white jacket a perfect fit for our installations, but it also provides a very clean, professional finish. There is a consistently high quality across every batch that we have ordered.”
“We were especially impressed by the option for a right-angle plug. I was wiring up a device chain in a tight server cab, and the regular straight plugs were causing too much stress on the ports. Bespokecable boat using right-angle DC power extension cable 5.5mm x 2.1mm , which meant the cables were able to run flush with the equipment, opening up critical space and removing a potential failure point in the exposed connector form factor. Now that is a tangible understanding of the installer’s real-world struggle. The cables are solid, work exactly as expected, and have become one of those standard stock items we go to first.”
Learn more our AC Power Cords, please click here!
Choosing a power infrastructure is every bit as important as selecting the low-voltage electronics or industrial automation devices themselves, given recent technological trends. For system integrators and procurement specialists, the DC Power Extension Cable is an accessory, but for B2B buyers, it’s a cornerstone of stability, safety, and efficiency. If you are deploying a large-scale CCTV security network, installing commercial LED lighting, or connecting solar energy systems, it pays not to cut corners when it comes to cabling – a cheap cable failure can mean system downtime, equipment damage, and costly maintenance.
Bespokecable is a leading China-based manufacturer and factory. We do not simply sell cables; we sell solutions for reliable connectivity. Guide to Choosing DC 12V 24V Power Extension Cord provides you with all the necessary pointers to make an informed decision before you buy or purchase in bulk.
Basics You Should Know: Connector Types and Polarity
The first step is always physical compatibility, before we move on to the technical specs. Using your basic industry standard barrel jack, which is the 5.5mm x 2.1mm barrel jack. However, variations exist.
- DC Male-to-Female Extension Cable: This is a standard setup used to extend the distance between the power supply and the device. It has a male plug (the power source) and a female jack (the device).
- DC Pigtail Extension Cable: Compared to the male-to-female extension, where both sides have a connector, one side of a pigtail has bare wire ends (tinned copper). This is commonly used when you need to solder directly to the terminal block or a non-standard device.
- Polarity Matters: The industry standard for DC power is “Center Positive,” but make sure to check what your device wants. A polarity reversal cable can destroy sensitive electronics instantly.
One of the most essential steps when sourcing from a single supplier is to ensure that all batches adhere to a single standard. A dependable manufacturer will ensure that all DC male-to-female extension cables from your bulk order comply with strict polarity standards.
Voltage and Current: Fitting the Application
The voltages in these types of cables are the two most common, 12V and 24V.
- 12V Systems: Common in CCTV cameras, LED strip lights, routers, and automotive devices.
- 24 V Systems: widely seen in industrial automation, longer LED runs (to decrease voltage drop), and more complex security systems.
Importance of wire gauge: The insulation rating is important, but the current (Amps) controls the wire size. The selection of a DC 12V or 24V power extension cord should ensure it can handle the total current draw of the connected devices. For example, a Solar DC extension cable used in photovoltaic systems carries varying current and must be ballasted with high insulating properties for environmental exposure.
AWG & Voltage Drop: The Critical Factor
Not considering American Wire Gauge (AWG) can be one of the most common B2B procurement mistakes. The AWG number, which signifies the size of the copper wire. The lower the number, the thicker the wire and the greater its maximum current-carrying capacity.
Why does this matter with respect to the purchase?
Voltage Drop is the loss of voltage when electricity passes from one place to another (due to resistance). If you were to use a thin cable (like 24AWG) for distance (let’s just say 100ft), you could be getting low-quality voltage at the device, making it impossible for the device to function even if your power supply is outputting at the perfect rating.
- For short distances and low power (i.e., 24 or, less commonly, 22 AWG), small electronics can work fairly well up to around 15 ft.
- Professional Standard: 20 AWG or 18 AWG (15ft — 30ft) For standard applications
- Note: For distance and/or power—Heavy-duty DC Power Extension Cord (Usually 16 AWG or 14 AWG)
That said, if you need a 30-foot power extension cable, never skimp on the thickness. A heavy-duty DC power extension cord will keep your devices stable, so you won’t have flickering lights or the camera rebooting. At Bespokecable, if you buy from us, we give charts to help you choose the appropriate AWG for whatever length and current that you may need
Material: 99.999% Pure Copper or CCA
Price is always a factor in the B2B market. But they are also quite stingy when you buy cables; you have to look for the conductor material.
- CCA (Copper Clad Aluminum): A combination of Aluminum wire with copper plating. It is cheaper but much more susceptible to breaking at connectors and has substantially higher resistance. It does not meet the acceptable cost for bulk power transmission and reliability available over the long term.
- Oxygen-Free Copper (OFC): THIS is the gold standard. It has higher conductivity, flexibility, and durability.
Bespokecable, as a responsible factory, uses high-class pure copper and is also designed for safety and efficiency. Before making a purchase of wholesale products, always inquire with the supplier regarding the conductor material. A heavy-duty extension cord should have high metal content.
Application-Specific Considerations
No two industries have the same requirements for DC 12V and 24V power extension cords.
1. CCTV and Security Systems
Cable management and signal stability are top priorities for security integrators. A DC pigtail extension allows you to install in junction boxes. You may as well use a top-quality Solar DC extension cable in your off-grid security options.
2. LED Lighting Projects
You’ll learn that LED strips are sensitive to voltage drop. For example, if you are using a thin cable on a long run (e.g., running a 30ft DC power cable 30ft extension to an extended light strip), the LEDs at the end of this line will be dimmer than those at the beginning. We suggest thicker gauges (18 AWG or 16 AWG) to achieve consistent brightness.
3. Industrial and Networking
Space is sparse in 19-inch racks or within industrial control panels. We often prefer a right-angle DC male-to-female extension cable so we can plug in our device without putting extra strain on the port.
Why Buy Wholesale from Bespokecable?
If you want to purchase in bulk, working directly with a manufacturer like Bespokecable is superior to working through trading companies.
- Savings: We offer factory-direct pricing, which translates to ultra-competitive wholesale prices for large orders.
- Quality Control: Our Chinese factory is certified to ISO 9001:2015. All DC Power Extension Cables are tested for continuity, insulation, and plug stress.
- Customization: Need a specific length? A specific color? Custom packaging? As a manufacturer, we can adjust the product to your specifications.
Conclusion
Selecting the versatile DC 12V/24V power extension cord for you depends on the connector type, wire gauge, material quality, and application needs. From a simple DC male-to-female extension cable for a router, through to an industrial Solar DC extension cable for outdoor use, the quality of the cable will determine how robust your complete system is.
Do not let a weak character make your project suffer. Buy confidence from a factory with performance in mind. Browse all Power Cords to find the correct one, or check our AC Power Cords collection for standard mains solutions.
Additionally, our NEMA 5-15p Power Cord series is a good option for North American heavy-duty applications.
Request a wholesale quote from Bespokecable today and see what real factory-direct quality looks like.
