Safety Features: QC3.0 adapters integrate various safety features to protect both the device and the charger from potential risks. These safety mechanisms include overvoltage protection, which prevents excessive voltage levels that could damage the device, and overcurrent protection, which safeguards against power surges. Additionally, temperature monitoring ensures that the charging process remains within safe temperature limits, preventing overheating issues. Voltage Negotiation: When a QC3.0 adapter is connected to a compatible device, it initiates a voltage negotiation process. The adapter communicates with the device to determine the optimal voltage level for charging. This negotiation ensures that the device receives the appropriate amount of power without damaging the battery or other components. Voltcraft CQCP2400 operating instructions" (PDF) (User manual). Voltcraft. Output voltage/current 5 V/DC, max. 2400 mA or 9 V/DC, max. 1670 mA or 12 V/DC, max. 1250 mA Apple, for instance, uses the USB- PD fast charge for its iPhone XS, iPhone XS Max, iPhone X, iPhone 8, and iPhone 8 Plus.

Buy QC 3.0 accessories. The standard is pretty new, so you should get a good amount of use from them. Since USB-C is a type of connector, and we’ve established that connectors don’t determine the underlying capabilities, it’s important to know that USB-C connectors can provide you with the performance of almost any generation of USB that has come before—what’s important is what’s behind the connector or at the other end of the cable. For example, if you were to have the right cable to connect the latest and greatest smartphone with USB-C into an old, low-power, USB-A port, the phone would likely alert you to the low power and refuse to charge. The slower protocol always wins out.Efficiency and Heat Dissipation: QC2.0 improved the efficiency of power transfer compared to QC1.0, resulting in less wasted energy and reduced heat generation. QC3.0 further enhances this efficiency by minimizing power loss during charging, making it more energy-efficient and generating less heat. This not only improves the overall charging performance but also helps to prolong the lifespan of the device’s battery. Avoid Extreme Temperatures: High temperatures can have a negative impact on the charging efficiency and overall performance of both the device and the adapter. Avoid exposing your device and QC3.0 adapter to extreme heat or cold, as it can affect the charging process and potentially cause damage to the components. Store and use the adapter and device in a cool and well-ventilated area. So, which is faster, PD 3.0 or QC 3.0? In a nutshell, it depends on your device. To begin with, there’s a difference between Android and Apple products. With Android, you’re dealing with an open standard, so your mileage may vary. Most newer Android phones support PD charging, and more than half also support QC 3.0. This includes newer Samsung models. Keep in mind, though, that this will depend on your phone’s manufacturer. If you’re using a cheaper phone like an LG Stylo, you’re still limited to Micro USB charging. This won’t allow for either PD 3.0 or QC 3.0. In the graph above (assuming charging current keep in identical); you can see the differences in the three charging technologies voltage output.

This feature helps to reduce the amount of energy that’ll go to waste during charging. While charging your device, you might notice it heating up, this is the energy that goes to waste, and it can reduce your battery life span. The INOV feature ensures that lesser energy is lost, which means less heat. Avoid Using Extensions or Adapters: When charging with a QC3.0 adapter, it’s best to directly connect your device to the adapter without using any additional extensions or adapters. Adding extra components between the adapter and your device may cause voltage drop and result in slower charging speeds. While I waited for it to arrive, I tried to hunt down the technical details about how the QC3.0 protocol worked. Hugatry's blog was a great starting point for QC2.0, but I needed to learn how to set the other voltages as well. Given his success in mining the protocol info from datasheets, I went looking for the same. I found the datasheets for NCP4271-D and CHY103, which gave me the additional info that I needed.

Key Takeaways:

It’s worth noting that when using a QC3.0 adapter, the charging speed may vary depending on various factors such as the device’s battery capacity, temperature, and overall health. While the QC3.0 technology enables faster charging, it may not always reach its maximum potential in certain conditions. Nevertheless, you can still expect significantly faster charging times compared to standard USB chargers.