Whether you have mechanical or hydraulic disc brakes, centering your brakes takes some patience when learning. Once you are familiar it will be much faster and easier. Brakes will almost always require adjustment when you first assemble the bike to be perfectly tuned. This is a critical safety step after assembling your eBike.
Please refer to the video at the bottom of the page for a quick adjustment.
If attempting yourself and you still need assistance after reviewing the videos below. Please provide video of the noise, and pictures showing the alignment of your brake rotors and pads. This will help us understand the situation so we can better assist you.
Possible causes of noise:
This is a process that a bike mechanic will be able to preform best, but if you want to learn to maintain your bike yourself throughout the lifetime of your ownership, there are some very helpful tutorial videos available for adjusting disc brakes and removing the screeching or squealing noises that can often come with having disc brakes.
Here is some very helpful 3rd party information:
Article with pictures: How to stop squeaking disc brakes
1st Video: As the title suggests explains "A Quick Adjustment"
2nd Video: Discusses noises, cleaning your brake rotors and pads, sanding your brake rotor or even filing your brake pads if they became hot during heavy braking and are glazed over.