For more info see for example here.
This is my new electric bike and I’m very satisfaction of it. I did some improvement that you see below.
Behind the engine there is a hole from which the sensor wire that senses the wheel turns comes out. I noticed that some dirt was settling here and then I put a adhesive felt cap as shown in the image below.
Below there is the list of parts that i used.
Electronic anti-theft for bicycle and rear light, see here.
Bicycle lights and horn, see here
Mudguards for mountain bikes, see here
Waterproof frame bag with phone space and water protection cover, see here.