... 500W brushless, battery lithium-ion or LIFEPO4 36V 10Ah, Shimano 7gear EN15194, wheels 26inch, all aluminum parts, motor 250W ... brushless, battery lithium-ion or LIFEPO4 36V 10Ah, Shimano 7gears.Write to us to receive our last ... have 7 years experience in business of manufacturing electric bicycles.- Having our own factory in China allows ... assure perfect shipping. 26" 250w city electric bicycle