What eBike accessories are essential?

Essential accessories: a quality U-lock ($50-$150), front and rear lights if not integrated ($30-$80), a helmet ($50-$200), a portable pump with pressure gauge, and fenders for commuting in wet weather. Highly recommended: a rear rack for cargo, a phone mount, a bell (required by law in many cities), and a good bike computer or GPS if you plan to track rides or navigate by bike.