electric lithium battery folding bike 1, light weught and small size 2,material ... lithium battery : 36V, 7Ah/8Ah/9Ah/10AhPOWER 180WMAX SPEED 20km/hPACKAGE SIZE: 740*290*840mm1,A NEW FASHION ... AND OLD MEN CAN HOLD IT UP.3, THE BIKE IS MAINLY USE MAGNESIUM ALLOY, ANTI CORROSION, ANTIQUAKE, ... ,A NEW DESIGN AND PERFECT CRAFTWORK, WHICH BROGHT THE BIKE FASHION APPERANCE.5, LITHIUM BATTERY, 36V 7 -- 10AH ...