Using your Tern NBD S5i e - bike is a breeze. First, make sure the Bosch PowerPack 500 is fully charged for longer rides. To start, just step on the pedals gently thanks to the ultra - low standover height. Use the Shimano® Nexus 5 - speed internal hub to adjust your speed according to the terrain. When it's time to stop, rely on the Magura MT4 hydraulic disc brakes. When riding with a passenger, keep in mind the weight limit of the Gaia Rack. As for maintenance, the Gates belt drive is low - maintenance, but it's still a good idea to check it regularly. Also, check the tire pressure and the brakes from time to time to ensure a safe and smooth ride.