WhoshouldIsee Tracks

The Future of Device and Smartphone Charging: Understanding USB-C Power Delivery

In recent years, USB Type-C has become the standard connection for charging a multitude of devices, from smartphones and tablets to laptops and beyond. This evolution in charging technology has revolutionised how we power our gadgets, offering numerous advantages that enhance convenience, efficiency and speed. In this blog, we’ll delve into the benefits of USB-C power delivery, explore how this charging technology works, and provide tips on selecting the right adapters and cables.

USB Type-C: The Standard Connection?

USB Type-C, commonly referred to as USB-C, is a versatile and reversible connector that has swiftly become the go-to standard for modern devices. Unlike its predecessors, USB-C is designed to handle not just data transfer but also power delivery, allowing it to charge devices quickly and efficiently. Its symmetrical design means it can be plugged in either way, eliminating the frustration of trying to insert the connector incorrectly.

Advantages of Power Delivery via USB-C

One of the standout features of USB-C is its support for USB Power Delivery (PD). This technology offers several key advantages:

1. Faster Charging: USB PD allows for higher power levels, meaning devices can charge much faster compared to older USB standards. This is particularly beneficial for high-capacity devices like laptops and tablets.

2. Universal Compatibility: USB-C PD can charge a wide range of devices, from smartphones to laptops, using the same cable and power adapter. This reduces the need for multiple chargers, simplifying your tech life.

3. Enhanced Safety: USB PD includes features that protect devices from overcharging, overheating, and other potential hazards, ensuring a safer charging experience.

4. Flexibility: With variable power delivery, USB PD can adjust the power output according to the device’s requirements, making it highly versatile.

USB-C Power Delivery. How it works.

How the Charging Technology Works: USB Power Delivery is an advanced specification that significantly improves the standard USB charging protocols. Here’s how it works:

Negotiation Process: When a USB-C cable is connected to a device, the charger and device communicate to determine the optimal power level. This negotiation ensures the device receives the correct amount of power without exceeding its capacity.

Variable Power Levels: USB PD can deliver power at varying levels, typically ranging from 5V (volts) to 20V, and up to 100W (watts). This flexibility allows it to charge everything from small smartphones to large laptops.

Bidirectional Charging: USB PD supports bidirectional power delivery, meaning a device can either receive power or provide power to another device. This is particularly useful for scenarios where one device, like a laptop, can charge another, such as a smartphone.

Which Power Adapter is best for you?

Choosing the right power adapter is crucial for efficient and safe charging. Here’s how to ensure compatibility:

1. Check the Device’s Specifications: Look at your device’s user manual or manufacturer’s website to find the recommended power requirements. 

2. Examine the Adapter’s Output: Ensure the adapter’s voltage and wattage match or are within the acceptable range for your device.

3. Verify USB PD Support: If your device supports USB PD, make sure the adapter does as well. Many modern adapters explicitly state their compatibility with USB PD.

4. Connector Type: Confirm that the adapter has a USB-C output, as using the correct connector type is essential for compatibility.

The Best Cable for Charging via USB-C

Not all USB-C cables are created equal. Here’s what to consider when choosing a cable:

Power Rating: Ensure the cable supports the power levels required by your device. High-quality cables often list their power ratings on the packaging or cable itself.

Data Transfer Speeds: While primarily used for charging, USB-C cables can also transfer data. If this is important, look for cables that support higher data transfer rates.

Build Quality: Opt for cables with robust construction to avoid wear and tear. Features like reinforced connectors and braided exteriors can enhance durability.

Certification: Cables that are USB-IF (USB Implementers Forum) certified have been tested for compliance and safety, ensuring reliable performance.

ChargeBox: UK-designed and manufactured.  

We only use real Apple Type C USB cables for all our latest charging solutions.  We also strengthen them to give them a x 10  lifespan.  That’s the difference between a cable that would last 400 charges and one that lasts 4,000!


USB-C and USB Power Delivery are transforming the way we charge our devices, offering faster, safer, and more versatile options. USB-C has undeniably set a new standard in the realm of charging technology. Its versatility, speed, and efficiency make it an essential component in our increasingly connected lives.

Understanding how this technology works and knowing how to choose the right adapters and cables can significantly enhance the charging experience and let’s face it no one likes waiting more time than they need to, for their phone battery to charge! 🔋

The Chargebox Team