The Aries 721 is a masterpiece of design and quality and the Best Deal on the market. It is one of the most powerful ebikes with a 72V 20Ah SLA Battery and also comes with the Option for Lithium Battery Upgrade. This bike will accomodate a driver over 6 feet tall. LED Lights and a powerful motor, this e-bike is sure to please. Lithium 20Ah cost $3149 Lithium 30Ah cost $3649 72V 20Ah Battery Options Lead Acid/Li-ion Accomodates drivers over 6 feet Motor- 500W Up top 45km with Lead Acid/85km with Lithium LED. lights, Digital Dash Tire 3.5-10 Disc Brake (F)/ Disc Brake (R)