What do I do if the bike runs out of charge while I am using it?

From the time the e-bike is released, there should be enough battery to complete a trip in under 4 hours. If for some reason your trip is over 4 hours long, you may need to return it to a station and start a new trip with another e-bike.  

An e-bike must have at least 20% battery available to be released and start a trip.