electric lithium battery folding bike 1, light weught and small size 2,material: magnesium alloy 3,li-battery 36V, 7/8/ ... /9Ah/10AhPOWER 180WMAX SPEED 20km/hPACKAGE SIZE: 740*290*840mm1,A NEW FASHION TRANSPORTATION TOOLS.2, SMALL AND MUCH LIGHTER , EVEN LITTLE ... .5, LITHIUM BATTERY, 36V 7 -- 10AH.6,BRUSHLESS MOTOR.7,FOLDABLE AND PORTABLE, CANE BE PUT INTO TRUNK Magnesium alloy electric ...