After an Android phone has been used for one or two years, the battery will naturally age, resulting in Android battery draining too fast or Android phone won’t charge issue. This is a normal phenomenon, but it will not slow down the charging. Or your Android phone is a new one, but...
Basic Fixes: Unplug the cable when finished charging:Keeping your phone connected to a USB cable even after turning the power off might trick your device into thinking you’re constantly disconnecting and connecting the cable. So, always disconnect the USB cable from your device when not in use...
Still used for devices where slow transfer speeds don't matter. Maximum power output may be improved via the use of proprietary fast charging protocols like Quick Charge. USB 3.0 5Gbps 5V, 900mA or higher via USB Battery Charging Commonly used for USB 3.1 (renamed to USB 3.2) 10Gbps, 20...