electric bicycle conversion kits

Electric Bicycle conversion kits: Okay carrier Okay 36V 10Ah;24V 10Ah battery Controller Speed sensor 250W brushless motor 1------battery with box: Polymer Li battery,36V10Ah,charging time 5-8 hours. Can be connected to PC with USB for maintenance,information includes charge cycles,current capacity,total voltage,each cell's voltage, customer can balance,each cell's voltage to longer the time of use of battery 2------controller: brushless 3------a pair of brake bars 4------speed sensor & magnetic disc 5------rear carrier 6------controller box 7------rim with motor with waterproof connector 8------plastic cover of waterproof connector 9------multi-function LCD screen: service ECO and NORMAL mode,providesinfo on current speed,current state-of-charge,current distance,current cycle time,total distance