

In general, you should use the cable that came with the phone. If none were included, stick with cables designed for your specific phone. You can use apps to measure voltage to see if fast charging is working.
fast charge It’s a relatively recent addition to smartphones that have become mainstream. Some devices can be charged from 0 to 100 in less than an hour. It’s pretty awesome, but it doesn’t work with just any old USB-C cable.
A typical USB port sends around 2.5W of power to the connected device. Fast charging increases to 15W on the low end, while some go as high as 100W. If you want to take advantage of those faster charging speeds, you’ll need to make sure you have compatible accessories.
It’s not just the cable
First, we have to point out that the USB-C cable is only part of the fast charging equation. the AC adapter—or “charging brick” — must also support fast charging. A fast-charging compatible cable will not charge your device faster than if you use a standard power adapter.
If your phone supports one of the many fast charging standards, it probably came with a power adapter and cable that allows it. Otherwise you can check which fast charging standard your device supports and find compatible accessories. Discover our guide to the best phone chargers for a variety of options.
Is my cable a fast charging cable?
There are several things you can do to check if your existing cables support fast charging. First of all, you should start by checking your phone packaging or searching the listing online and see what it says is included in the box.
If your phone comes with fast charging USB-C cable, cable specifications will be listed on the box or online. Sometimes it will just say “Fast loading”. Other terms to look for are “Adaptive Fast Charging”, “Quick Charge”, and “USB PD” or “USB Power Delivery”.
Another easy thing to check is the thickness of the cable. Fast charging cables tend to be a bit thicker than regular cables, but it’s not always very noticeable.
RELATED: USB Type-C explained: what is USB-C and why you’ll need it
If you know the power adapter supports fast charging, you can use your phone to make sure the cable is also fast charging. iPhone and android can use an app called Ampere to see a real-time voltage measurement. Look for 5V, 9V, 12V or more. Some Android phones will also put “Fast Charging” on the lock screen (shown below).
Unfortunately, most USB-C cables don’t have quick charge labels on the cable itself. However, you may see one that has a lightning bolt icon or initials for “Quick Charge”.
In general, it’s best to stick with USB-C cables and adapters made specifically for your phone. In most cases, this will ensure that you get the fastest speeds possible. Not all USB-C cables are created equal, so be careful with what you use. Check out our guide for the best USB-C cables for buying advice.
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