Bangjia USB-C to DC Adapter Kit 100W 5.5x2.1mm

Bangjia USB-C to DC Adapter Kit is a 10-piece PD power solution that converts a 100W (and lower) USB-C PD source into a 5.5x2.1mm DC barrel output for powering many laptops and devices.

This kit pairs a 6-foot USB-C PD to DC power cable with ten interchangeable 5.5x2.1mm barrel connectors so you can use a single USB-C PD charger to power routers, projectors, UPS units, and a wide range of laptops from popular brands. The cable includes an E-mark controller that negotiates power delivery safely and supports up to 100W (20V/5A) where the charger and device allow. It’s intended for charging power only — it does not transmit data or video.

Will this adapter work with my laptop or device?

Compatibility depends on the device’s barrel jack size and power requirements. If your device uses a 5.5x2.1mm barrel input and requires a voltage and wattage within the PD supply’s capability, this cable can provide power. Always confirm the original adapter’s voltage and required wattage before connecting.

• Includes universal 5.5x2.1mm barrel plugs suitable for many models
• Supports 100W, 90W, 65W, 45W, 30W, 18W PD chargers depending on your wall charger
• Not suitable for devices requiring other barrel sizes or proprietary plugs
• Not for data or video — power delivery only

How safe and fast is charging with this cable?

The cable integrates an E-mark power-management chip that negotiates current with the USB-C PD charger and prevents overcurrent when used correctly. It supports up to 5A at 20V (maximum 100W) when paired with a PD wall charger of the same capacity, delivering rapid charging for compatible devices while protecting against unstable current.

• Built-in PD communication chip for automatic current adjustment
• Rated for up to 5A and 20V when matched with a suitable PD supply
• Reinforced joints and braided nylon for long-term durability
• Works only if PD charger wattage meets or exceeds device requirement

What’s included and how portable is the kit?

This set contains one 6-foot USB-C to DC power cable and ten 5.5x2.1mm barrel connectors to cover a variety of devices that share the same barrel dimensions. The cable’s lightweight, tangle-resistant design makes it easy to pack for travel and helps you ditch multiple bulky power bricks.

• One durable, braided 6-foot USB-C to DC cable
• Ten interchangeable 5.5x2.1mm barrel tips for broad device coverage
• Compact and travel-friendly to carry in a bag or pocket
• Ideal as a backup kit for home, office, or travel use

How do I ensure compatible power and prevent damage?

Always compare your device’s original adapter’s voltage and wattage to the PD charger you intend to use. The Bangjia cable will pass the negotiated PD voltage up to the limits of the charger and device; it cannot increase output above what your PD supply provides. If your device needs a specific voltage not supported by the PD profile, do not use the cable.

• Check original adapter label for volts (V) and amps (A) before use
• Use a PD charger with equal or greater wattage than your original adapter
• Do not use with devices that require proprietary voltages outside PD profiles
• Disconnect if device becomes unusually hot or behaves erratically

Who this is for: The Bangjia USB-C to DC Adapter Kit suits tech-savvy travelers, small-office users, and anyone who wants a lighter, universal way to power multiple 5.5x2.1mm devices from a USB-C PD charger. It’s especially useful for people who own routers, projectors, UPS devices, or laptop models that accept a 5.5x2.1mm barrel and whose power needs match a PD supply. This kit is not a replacement for proprietary connectors or for devices that demand nonstandard voltages.