The phrase "charging feature" refers to a function or capability of a device, typically electronic, that allows it to be charged or powered up using a specific method or source of energy. Full definition
You'll also find the Note 8's fast wireless charging feature to come in handy when it's time to recharge your phone. (tomsguide.com)
Each device offers a Quick Charge feature as well, so when you get low and are near a wall outlet, you can get up and running faster. (androidheadlines.com)
There is a wireless fast charging feature that is only for certain phones. (indabaa.com)