How To Intall: 1. Handlebar Installation: Fix the USB charger on the handlebar and connect the positive and negative poles of the wire to the power source. 2. Screw Mounting: Use a screw to fix the USB charger in place, and connect the positive and negative poles of the wire to the power supply. Package: 1 x USB & Type-C charger 1 x Faucet holder 1 x Screw mounting bracket 1 x Short screw 2 x Long screw 1 X Faucet fixing screw 1 x Plastic handlebar non-slip mat 1 x Punch mounting bracket 1 x Extension cord Kindly Reminder: 1. Power connecting wires, usb cable and devices should support QC 3.0 fast charge.2.For vehicles, it's recommanded to get power from fuse box, while for the motorcycle, better connect to the wires of the key switch.3. The voltage meter reading led will show up after the item is connected to the battery.4. Since the iPhone series does not support fast charging, so their charging speed is normal.