You can start and ride an e-bike without a battery by simply pedaling it, as the bike will operate similar to a traditional bicycle. The motor will not be activated, but the bike's chain drive and gears will allow you to pedal and move the bike using your own effort. However, be prepared for increased physical strain, especially on inclines, due to the added weight of the motor and other components. Ensuring the battery compartment remains clean and using the bike's gears can help make the ride more manageable.