In professional electronics, stable and safe DC power is non-negotiable. The correct DC power cable is not merely an accessory; it is the critical artery delivering ‘life’ to any device—medical monitors, telecom base stations, various industrial controllers, and point-of-sale systems being prime examples. A poorly made cable leads to voltage drop, near-constant equipment malfunctions, safety hazards, and the costly downtime that follows.
We specialize in manufacturing these DC power cables, specifically tailored for the more rigorous demands of B2B and true industrial applications. Three pillars guide our work: Safety, Reliability, and, to a large extent, Precision. High-purity copper conductors are used throughout our products to minimize (near-perfect) power delivery loss. International safety-compliant standards (UL/CE being the most common; RoHS, if possible) are strived for. Connectors – barrel plugs, aviation style, or any form of proprietary interface – are all precision engineered; secure fit, the correct polarity, and long-term mating cycle being paramount.
Understanding that one size does not fit all, our core strength lies in tailored solutions. Cable length, AWG wire gauge, jacket color, complex or straightforward shielding—all can be customized. Seemingly small integrations into final equipment push us to provide proper strain relief and at least partial EMI/RFI shielding. Direct manufacturer services mean we can scale up production, OEM/ODM style, with or without complete branding.
Whether you are an equipment manufacturer integrating power cords into your products, a system integrator sourcing reliable components, or an enterprise maintaining a fleet of devices, we provide the exact DC power solution you need. Our range of standard options is wide enough to cover most cases; contacting our engineering team directly for more specific or custom requirements is always an option. Powering your innovation (large or small scale) is our focus – confidence in that power is what we aim to deliver.
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Products By Features
Great For Power Adapter Connection To Electronic Devices 5.5×2. 1mm or 5.5×2.5mm connectors with Pure copper conductors and 18-24AWG ISO 9001:2015-certified, with up to 5A (current). It also fixes the voltage drop problem that can occur, making it very efficient for low-voltage systems such as LED strips, routers, and CCTV cameras.
Designed specifically for RVs, this cable is made with multi-strand copper wire and flexible PVC or rubber jackets to handle constant vibration and movement. Features customizable gauges (18-24 AWG) to manage high-power load; supports 12V/24V systems. The solid construction would eliminate power interruptions in a mobile environment.
Designed for photovoltaic systems, the cable features 90 °C-rated tinned-copper conductors in 12 AWG /10 AWG and UV-resistant XLPO insulation. The 1.8kV DC voltage rating is compliant with TÜV 2PfG1169 and IEC 62930 standards. It addresses overheating and degradation problems in solar arrays, avoiding reduced efficiency.
This is a 5.5×2.1mm cable, perfect for the LED lighting project. DC Plugs are 2.1mm, and copper cores are stranded 22 AWG CE-certified, capable of up to 3A at 12V/24V, and can be used in long runs without voltage drop, keeping constant brightness over under-cabinet lights and end-to-end signs! Signs or decorative LED strips as well.
Made for Starlink satellite internet systems, it includes 18 AWG/20 AWG high-purity copper conductors and fire-retardant materials. It has passed 24-72-hour salt-spray tests and can also support high-current loads, reducing noise and ensuring stable data/power transmission. It addresses connectivity issues caused by power surges and environmental corrosion. Own factory fast delivery.
This cable is designed for automotive and marine use and is made from 16AWG/14AWG SGT wire with tinned copper strands, insulated with heat-resistant PVC. Compatible with SAE J1128 and ISO 6722, this cable is rated for 12V/24V to 15A systems. It removes the risk of voltage drop and connection failures in automotive accessories, GPS equipment, and marine electronics. B2B wholesale bulk price.
Perfect for supporting CCTV cameras, LED strips, and routers from faraway outlets. Includes a common barrel connector measuring 5.5mm x 2.1mm universal, conductors made from 100% pure copper (16–24 AWG) and high quality PVC jacket. It avoids any downtime due to devices dropouts at measurable distances and saves installations from costly rewiring.
Ideal for wiring in tight spaces, including junction boxes, security systems, and control panels that may require flexible wiring. Constructed with connectors that are 5.5mm x 2.1mm, brass gold-plated contacts, and solid copper cores to ensure the lowest resistance possible. This feature addresses limited space behind mounted devices, minimizes pressure on connections.
Optimized for rooftop PV arrays and off-grid systems, this 10 AWG cable with tinned copper conductors features a dual-layer XLPO/XLPE jacket rated from -40°C to 90°C and is TÜV, CE, and RoHS compliant, with a DC voltage rating of 1500V to address key voltage-drop challenges over long runs. Allows you to capture as much energy as possible, eliminates the risk of energy loss in your residential or commercial solar installation, and provides a reliable connection.
10 AWG high-strand tinned copper wiring and IP68-rated MC4 connectors. It is ideal for outdoor use, connecting solar PV panels to an inverter. Fits 1500V DC systems to the rigorous TÜV and CE safety standards. Featuring a tool-free snap-lock design that says goodbye to installer pain points with fast, weatherproof connections that help keep moisture and corrosion out while slashing labor time and maintaining optimal power flow regardless of environmental conditions.
This Y-branch cable, designed for commercial array and balcony power plants with complex parallel wiring, enables single-input-to-multi-output (1-to-2/3/4) configurations. IP68 MC4-certified and made with 10 AWG PV wire, it is TÜV and CE certified. It simplifies current aggregation across multiple panels, eliminates combiner box wiring, reduces installation errors and material costs, and maintains proper amperage balance throughout the system. Own factory fast delivery.
This 4-in-1 solar panel adapter cable for portable power stations / solar generators / RV, integrated MC4 input compatible with XT60, Anderson, DC7909, and DC5521 output. Uses 10 AWG oxygen-free copper with flame-retardant insulation. By replacing several single-purpose cables with a universal all-in-one design, this solution eliminates compatibility headaches and provides an easy way to ensure seamless connections between panels and DC equipment.
This 16 AWG pure copper cable will help extend the reach of battery tenders in RVs, motorcycles, and marine applications, with minimal voltage drop, even over 12ft runs. Polarized SAE connectors snap on, and the waterproof cap prevents corrosion on the steel pins; they are rated for 12–24V DC at up to 15–20A. This setup helps avoid connection failures in bushy, soggy outdoor conditions, ensuring that off-grid equipment receives a constant current. The source Factory fast delivery.
This SAE pigtail is designed to allow you to build your own custom SAE ports in vehicle dashboards or battery boxes, with a standard SAE plug on one side and stripped, tinned copper wires on the other. The polarized connector also prevents improper connection, and the 16AWG stranded copper construction is flexible even in cold temperatures (-20°C to 80°C). There is no need to cut and splice factory cables, providing a clean solder-ready solution ideal for 12V DC permanent installations.
This cable features a flush-mount female SAE socket of the kind you might prefer for a clean-sunk look in an RV’s interior or control panel. It is made from 16AWG pure copper conductors, provides up to 20A continuous current, and has a common SAE plug for quick disconnect. This configuration addresses the challenge of heavy, non-flush mounts and offers space savings. It’s a strong finish for 12–24V DC systems
Designed for direct battery connection in solar charge controllers or fuse blocks, the harness translates SAE standards into color-coded O-ring terminals. With a Resistance-free 16AWG Pure Copper Wire and Polarized SAE Connector, it is Tool-Free! Whatever the case may be, it fulfills an installer’s need to hardwire accessories by creating a secure, reusable link between battery terminals and devices compatible with SAE connectors
Customized Solutions
Your equipment has unique power requirements. We provide fully customizable DC power cables—length, connector type, wire gauge, and even the jacket—all tailored to your needs. The end goal is a perfect fit, and optimal performance follows from that fit. Integrating these cables into a product design or simple deployment becomes much smoother.
Safety and Compliance
Safety is paramount. Our DC power cables are designed and tested to meet stringent international standards; UL, CE, and RoHS compliance being prime examples. A constant commitment to various forms of certification reduces all possible types of risk, regulatory non-compliance being one of the more immediate concerns. Peace of mind for global operations is a direct result of this.
Durability and Reliability
Industrial environments demand durability. Our DC cables have robust insulation, high-quality copper strands, and various forms of reinforced strain relief, specifically at the points of connection. Their construction accounts for bending, pulling, and all surrounding environmental stressors; reliable day-to-day power delivery is the result they are built for.
Wire Gauge and Specifications
Choosing the correct wire gauge (AWG) is of utmost importance. Expert guidance and various options are provided to assist in this process; the cable must be able to handle the specific current draw of your equipment over the defined distance. Properly selecting the wire avoids power loss and subsequent overheating.
Connector Professionalism
The connector is the critical interface. We offer a vast selection of barrel plugs (5.5×2.1mm, 3.5×1.35mm, etc.), locking connectors, and various aviation styles. Each is designed for a secure, reliable connection; the correct polarity is the final touch to protect your equipment.
The required gauge is based on the current (amps) your device draws and the subsequent length of the cable. Higher current and/or increased distance call for a thicker wire—a lower AWG number specifically—to mitigate voltage drop. Our team can assist with calculating that optimal gauge.
Charging your device with a higher-voltage cable can cause serious harm. A lower voltage could cause the device not to turn on or operate as it should. Please make sure the voltage is exact.
Polarity is the side of the connector that is positive (+) and negative (-). It is center-positive or center-negative for a barrel connector. Reversing the poles will destroy your device. This will have a picture of the symbol on your power supply (usually something like this – (+) inside a “C” and (-) outside.
No, they are not. Though the AC cord that you plug into the wall is a commodity (such as an IEC C5/C6), most of these power bricks use a proprietary connector to connect to your laptop (For example, Dell, Lenovo, and HP all have their own unique tips). DC tip is compatible with your Laptop Model. If it does not match, please email us.
Yes, but with a caveat. A really long cable can result in “voltage drop,” where the device doesn’t get a strong enough voltage to operate correctly, and may not work. This should be good for your standard 10 -15 feet of cabling. You may want a higher gauge wire for less voltage loss if the runs are longer.
Power Delivery (PD) USB-C becomes the new universal standard for most devices, such as laptops or monitors. But for legacy units or odd-sized units, the dedicated DC barrel jack remains the primary or even only power supply. Consult your device’s manual to find out if it is USB-C power compatible.
We can manufacture cables with UV-resistant and weatherproof jacketing specifically for outdoor applications. When requesting a quote for a custom solution, we need to specify your environmental requirements.
A DC to DC cable is generally a short cable for direct connection from the power adapter (AC/DC adapter) to the device. A DC power extension cable is used to extend the distance between the adapter and the device. It typically had a female DC connector on one side and a male on the other, essentially functioning as a “DC power extension cord.” The DC power extension cables use pure copper conductors to reduce voltage drop over longer runs, which is important for components such as CCTV cameras, LED strips, and routers.
The numbers are the outer diameter (5.5mm) and inner pin diameter of the connector(2.1mm or 2.5mm). If you take the wrong size, it can damage the device’s port or cause a loose, unreliable connection. The right size is usually printed on your original power adapter or on the device itself, next to the DC input jack. You can also use calipers to measure the inner pin of the adapter’s plug. We produce both types to suit different applications, from LED strips and routers to professional AV equipment. If you’re not sure, we can help you find the right connector!
Mobile application cables (as opposed to stationary, more permanent wiring) are designed like our RV DC Power Cable and Car Power Cable for extreme environmental conditions – continuous vibration, temperature fluctuations within the ±40° range, and potential exposure to moisture or chemicals. They should have multi-strand, flexible tinned-copper conductors to prevent breakage, rugged PVC or rubber jackets, and heavy-duty connectors. They are, after all, also rated for 12V/24V DC systems typically found in automotive and marine applications and can provide safe, stable power for GPS devices, radios, and other accessories.
A solar DC cable is a type of wire specifically designed for solar photovoltaic systems.
It features UV-resistant XLPO/XLPE insulation for continuous sunlight exposure, tinned copper conductors for corrosion resistance, and a high-temperature rating (e.g., 90°C). The IGBTs are engineered to safely handle high DC voltages (up to 1500V/1800V, respectively, compliant with TÜV 2PfG 1169). The reliability of this connection between panels and the inverter prevents degradation, overheating, and energy losses in the solar arrays. MC4 connectors and Y-branch cables are also available to create complete solar systems.
A DC Pigtail Extension Cable The connector on one side (male or female) and tinned wires on the other. This enables a clean soldered or screwed connection to be made inside a junction box, control panel, or device enclosure. Ideal for security system panels, custom electronics, or any application that needs a focused, permanent DC power interconnection point and keeps the stress off the device’s own port.
An SAE Extension Cable is a cable that has extension or additional length with SAE 2-pin connectors at both ends. SAE connectors are 1 of the most popular connector styles used in the automotive, RV, and marine industries for connecting battery tenders & trickle chargers, as well as a variety of 12V accessories & portable power systems. The connectors are polarized (so they do not attach or connect the wrong way), and come with a weatherproof cap. SAE cables, SAE pigtails, and SAE-to-O Ring terminal harnesses are available to complete the mobile and off-grid power systems.
Being a direct factory, we are great at customization services on the basis of B2B and OEM / ODM. Request a custom DC power cable by using the “Send Inquiry” or “Quick Quote” form on our product pages. Indicate the length you need and the connector types (e.g., 5.5×2.1). Specifications include length (e.g., 5.5×2.5mm male-to-female), wire gauge (AWG), and any special requirements (e.g., outdoor-rated jacket, color). Afterward, our engineering team will provide a quote and ensure the cable matches your performance and application specifications exactly.
Yes. Safety and compliance are paramount. All our DC power cables are constructed to (or better than) international standards and tested accordingly, e.g., UL in North America and CE in Europe, where applicable. We comply with RoHS regulations. This dedication to certification ensures that our products can be used safely, reliably, and legally around the world, which means B2B clients and equipment manufacturers can rest easy about their commercial and industrial deployments.
Standard cables cover a wide range, from the thin 24 AWG for low-power devices to the robust 10 AWG used in high-current applications such as solar arrays. For example, our common 5.5×2. 1mm cables usually use 18-22 AWG wire, rated at <3-5A at most. Our high-power cables (such as the Solar DC Cable 10 AWG) can handle much higher currents. Never use a cable rated lower than what your device requires, and please reach out to us for anything high-amp that isn’t listed on our website.
For outdoor or durable use, it would be important to use weatherproof solutions. Choose UV-resistant& waterproof jackets for cables. Second, the connectors are sealed. For full waterproofing, we offer IP68-rated connectors (such as MC4 Solar Cables). When it comes to standard barrel connectors, you need heat-shrink tubing with an adhesive sealant or a separate waterproof junction box. For automotive/RV applications, we have the SAE-to-O-Ring Terminal Harness , which provides a tight, corrosion-free connection to battery terminals and can then be enclosed in a waterproof container.
More About DC Power Cable of Bespokecable
1. Design Features
The DC power cable portfolio that we designed is optimal, precise, and long-lasting. Precision-machined DC power connectors (e.g., 5.5×2.1mm/2.5mm standard or custom sizes), with gold-plated contacts to ensure low resistance and a tight fit, are the key design points. We use high-purity, oxygen-free copper (18–24 AWG) conductors to reduce voltage drop, which is vital on 12V DC power cable runs. These include an extra-strong strain-relief collar, which protects the cable from wear and tear (where it connects to devices), as well as flexible PVC/PUR jackets over the entire length of the cables that allow you to bend them in any direction, along with options such as right-angle or locking barrel connectors for industrial or mobile applications to prevent pulled connections.
2. Products Application
Low-Voltage DC cable solutions that are designed with a wide variety of B2B and industrial sectors in mind. Common uses include power for CCTV security systems, LED lighting strips, and routers and networking devices. Well-intended as a 12V DC power cord, it finds a broad spectrum of applications such as automotive (car audio & dash cams), RV/marine systems, and medical carts. As for solar and telecom installations, using our thicker-gauge DC extension cable helps keep power stable over long distances, preventing performance degradation in critical infrastructure.
3. Quality Control
All DC power cords provided undergo stringent quality management processes to adhere to international safety standards (UL, CE, RoHS). In-house testing encompasses continuity and polarity tests to prevent damage from reverse connections, pull-force tests on connector joints to assess mechanical endurance, and high-voltage withstand tests to assess insulation integrity. Because our low-voltage DC cable can be used outdoors or in harsh conditions, we conduct supplemental salt-spray and flex-life cycle tests to ensure long-term reliability and meet industrial-grade specifications.
4. OEM/ODM Services of DC Power Cable
We are a direct factory, so we can offer a wide range of OEM/ODM services for DC power cable solutions. You can customize anything from the cable length to the jacket color (black for consumer and yellow for industrial), wire gauge (AWG), or connector type (barrel, locking, aviation). Whether it requires a specific DC power connector pinout, custom labeling, or a comprehensive DC extension-wire capability for your apparatuses, consider using our design team to provide quick prototyping and mass-production solutions.
5. Customer Feedback From Rafael Carvalhaes in Israel
“When we tried this supplier, our company had purchased several 12V DC power cables from this manufacturer for LED display installations. They have a consistent quality, and their DC power connectors fit snugly, not loosely. Their custom DC extension cable offering is something we personally enjoyed using to get the lengths that suited our installation perfectly, without extra wires flailing around and without worrying about voltage drops. In the context of high-current applications, our technical support team politely assisted us in choosing the appropriate low-voltage DC cable gauge. We are hiring a project manager for our LED Solutions Integrator.”
Visit our full collection page for more information on standard and custom Power Cables, AC Power Cables.
When it comes to professional electronics, the DC power cable is much more than just an accessory; it’s essentially the lifeline that provides stable, safe power for mission-critical equipment. Choosing an appropriate low-voltage DC cable supplier is an investment decision with operational, safety compliance, and total cost of ownership (TCO) ramifications for system integrators and OEMs focused on B2B clients. Bespokecable is a direct factory and manufacturer based in China with a mission to be the partner of choice for businesses that cannot afford downtime. Here’s why:
1. Unmatched Application-Specific Engineering
Custom cables are engineered for specific use cases and do not comprise generic, off-the-shelf options. The surveillance system power cord must be outdoor, UV-protected, and must provide stable voltage and no flicker during the image; accordingly, Solar DC cable products must ensure high-temperature resistance and tinned-copper conductors to avoid damage to the photovoltaic array. We have the solutions you need, whether you’re powering sensitive router DC power cable installations, high-current LED strip power cable projects, or mobile applications such as RV DC power cable and car power cable systems. Starlink DC power cable. Our proprietary salt-spray- and corrosion-tested Starlink DC power cable ensures that your satellite internet connection will not fail in harsh coastal environments.
2. Source Factory Benefits: Better Quality & Cost Control
Purchasing from Bespokecable means you are buying directly from the manufacturer. No middlemen, and this guarantees you compelling wholesale pricing, particularly when requested at extraordinary volumes. From raw material inspection (high-purity oxygen-free copper conductors) to final continuity and polarity testing, we have strict Quality Control procedures at our ISO 9001:2015-certified factory in Shenzhen. This in-house production ensures that every DC power cord complies with international safety standards, including CE and RoHS, for worry-free global deployments.
3. Total Customization & OEM/ODM Flexibility
Your equipment has specific needs, and our greatest strength is the solution. Providing total OEM/ODM services leaves you to customize everything about your DC power cable:
- Connector & Length: Custom DC power connector types (barrel, locking, aviation) and custom lengths to avoid excess wiring.
- Key Specifications: Custom wire gauge(AWG), suitable for DC extension cable applications, low voltage drop over long runs
- Branding: Private label and custom packaging to fit your product line.
It is great for delicate guitar pedal DC cable setups that require a specific jack size, as well as robust battery DC cable harnesses for power stations.
4. Robustness and Performance in Difficult & Strenuous Atmospheric Conditions
Durability is a requirement for industrial or outdoor applications. Our cables are supplied with strong PVC or PUR jackets, enforced strain relief, and, if needed, UV and waterproof ratings. We use flexible, multi-strand tinned copper for low-voltage DC cable runs in automotive or marine applications, which are resistant to vibration-induced breakage. The big commitment to toughness allows not just a secure and stable connection (whether it is Solar DC cable, rooftop, or CCTV power cable in the surveillance network.
5. Find a wide range at a one-stop shop
One-stop shop for all your DC power needs. We manufacture regular direct device connections using DC-to-DC cable, high-flex and extension LED strip power cable, heavy-duty RV DC power cable, and others. We also provide tailored solutions, such as MC4 Solar Panel Extension Cable and SAE Extension Cable, for the automotive and off-grid industries. The vast product offerings allow you to streamline your sourcing, simplify logistics, and confidently purchase from a single supplier rather than from many.
When you go for Bespokecable, you are choosing a partner who will power your innovation with precision, reliability, and value. View all DC Power Cables or request a custom quote from our engineering team today.
The right DC power cable is a vital engineering choice that directly affects the safety, performance, and lifespan of your electrical equipment. A bad selection can cause voltage drop, overheating, or even compliance failures for B2B buyers, system integrators, and OEMs. This guide is intended to give you some facts about what can be purchased and how, and to help you achieve the best balance of performance at a wholesale value, which is especially important for bulk deployments, with everything coming from us as a direct factory and manufacturer in China.
1. Start with Barrel Jack Specifications for the connector
Your first failure point is the connector. The DC 5.5 x 2.1mm and DC 5.5 x 2.5mm cables are the most common. They look similar, but the inner pin diameter is critical: a 2.1mm plug will only fit a 2.5mm jack loosely and will spark when crammed into it, potentially melting some components on the connectors as well. Always check your datasheet for the device, or measure the inner pin with calipers. You can use a right-angle connector on a DC barrel jack cable to relieve stress when space is limited behind your equipment. If you are wiring into a terminal block or custom enclosure, we recommend a DC pigtail cable (one end stripped/tinned) for a clean, solderable solution.
2. Evaluate Environment: Durability & Protection
Not all cables are built. A normal PVC jacket will likewise do for indoor office equipment. For a truly industrial environment, you must use a heavy-duty DC cable with good strain relief and a thick jacket for automotive or outdoor use. If cable exposure to the elements is a real concern, waterproof DC cables with IP67/IP68-rated connectors and sealed glands are non-negotiable to prevent moisture ingress. A shielded DC power cable with a foil or braided layer is indispensable for sensitive electronics and for systems with high EMI, to ensure signal integrity and compliance with EMC standards.
3. Calculate the Correct Gauge (AWG)
AWG is the main factor that prevents voltage from decreasing. The thicker the wire (lower AWG number), it creates a longer the run or the higher the current. A DC-to-DC cable transmitting 12V over 10 meters for an LED strip will require much thicker wire than an identical run of 1 meter for a router. Wire Undersizing which results in cable heating and undesired voltage on the devices. Our technical team can help with AWG calculations depending on your required current (amps) and distance.
4. Specialized Applications & Adapters
Different industries have unique standards. An SAE-to-DC cable is commonly used in automotive, RV, or solar applications as the connector type for most battery tenders or accessory power systems, due to its polarized design and convenient quick-disconnect. In some complex setups, a custom DC-DC cable harness would be required to power multiple devices from a single power supply. The cable rating must always match the application—solar cables require UV-resistant insulation, and medical devices need highly flexible, sterilizable jackets.
5. Source with certainty the power of a Manufacturer
With a purchase from Bespokecable, you’re directly sourcing from the factory. It removes all markups and allows you to dictate the configuration. Bulk orders can remain entirely customized, with full OEM/ODM services, to order specific lengths, colors, connector types, and branding. CE and RoHS-compliant DC power cables for international sale. From a basic DC barrel jack cable to a customized shielded DC power cable, we back the supply chain and engineering support that our B2B consumers expect.
Selecting a proper cable requires engineering knowledge paired with strategic sourcing. To receive a comprehensive quotation or technical support for your next wholesale order, contact us today.
