If storing a Radcity5 Plus bike for say a couple of weeks or more is it better to take the battery out of the bike? I know some batteries have a parasitic draw if left in a vehicle didn't know if same for bike.
If the bike has the original Rad controller, then you should be ok for a couple of weeks. If longer, then it's best to have the battery charged between 50 and 70%, and remove it from the bike.