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Dozens of Android phones are equipped with Qualcomm's proprietary Quick Charge technology. Keep in mind that this is still faster than older USB devices, but it's the baseline against which newer, faster standards are based. If your device has a older style micro USB connector or an Apple Lightning port, it's going to charge relatively slowly. Even so, most modern mobile devices fall into one of just a few categories: With so many USB specifications, it can be difficult to understand what you actually have in your own gadgets, or what to look for when buying a new mobile device.
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Understanding USB specifications, compatibility, and charging speeds In some cases, manufacturers say that USB-C can charge compatible devices as much as 20 times faster than older Lightning or USB devices. A similar phone with USB-C can charge to 55% or more in the same time period. For example, a typical phone might charge to about 30 percent in 30 minutes using a USB connector. And when two devices are connected, such as a USB PD charger and a phone, the two devices exchange information via the USB-C port - called Power Rules - which help them negotiate the highest possible power transfer, and then pick a suitable current and voltage.Īll this flexibility may translate into much faster charging, but the actual speed depends on the charger and device itself. That means you can potentially use a USB PD port on a phone or laptop to charge a peripheral in addition to simply being charged. It offers a lot more flexibility than previous USB charging standards - for example, USB PD acts as a two-way, port, able to both receive and deliver power. Power Delivery is a relatively new specification that is intended to serve as a single charging standard for all USB-C devices.
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