Examine the Cable Amperage
One of the most significant differences between a regular cable and a fast-charging cable is the amperage it supports. A standard cable carries approximately 0.5 A, while a fast-charging USB cable carries at least 2A. Therefore, when buying a new USB cable, ensure you go for the one with higher amperes that enables your device to charge rapidly.
Check the Description
Most cable manufacturers make it easy to identify a fast-charging cable by including it in the label. Therefore, before spending your hard-earned money on any cable, check the cable branding, description, or label for anything that indicates that the cable charges faster.
Go For the Thicker Cables
Fast-charging cables are thicker than regular cables since they carry a strong electrical current; thus have thick wires inside. It's assumed chiefly that thicker cables charge faster than their slim counterparts.
Purchase from Certified Stores
Certified stores save you from the hassle of differentiating and identifying fast-charging cables. It'd be best to go to your smartphone's manufacturer store since you're sure they have specific and genuine cables that'll charge your phone faster.
Check the Power Delivery Rating
Although a USB cable may support quick charging, it may not be sufficient for all devices. Generally, a standard USB type-C carries a power delivery of 60 watts. This is adequate for most tablets and cell phones.
Check the Voltage and Power Output
Another way to identify a fast-charging cable is to check the voltage and power output. A USB cable with a power output of 12V, 9V, 5V, or 2,000mA is an excellent sign of a faster charger. Most phones and other devices can handle 5V or 2.4A; thus, a cable with the above output can support fast charging.