Introducing the new Upgraded BIRIA Electric Folding, Series 2, with upgraded battery, tires, pedals, and charger. Has the appearance of a normal folding bike with the Lithium ion battery hidden inside the frame. With a 500 Watt motor and 36V, 12.8 Amp LG battery, it has a range potential of 22-30 miles per charge. It has dual disc brakes with fat tires 20 x 4 1/4. A USB port is included to charge your phone while riding. This is a pedal-assist electric bike that also has a throttle, but the throttle can be easily disconnected and taken out in minutes.