convert bicycle to electric bike

{"title":"Front Wheel Electric Bike Conversion Kit FAT TIRE Riders Travel Use In Wilder Terrain","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/5b\/dd\/8625403055551d16beb9a6fa87bc-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"BONEN","Minimum Order Quantity":"1 set","Delivery Time":"5-10 days","Place of Origin":"China","Packaging Details":"Carton+foam","Payment Terms":"Paypal,T\/T,Western Union","Voltage":"72V","Motor Power":"3000W","Rim":"28'","Controller":"24 MOSFETs"}}

{"title":"E Bike Wheel 26 Inch1500W Electric Bike Hub Motor , Bicycle Electric Conversion Kit","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/fc\/ec\/0b3e39fa8c42026579ebbf6062d9-200x200-1.jpg","attrs":{"Price":"usd +125+pc","Brand Name":"NC","Model Number":"enc481500","Minimum Order Quantity":"5 pc","Delivery Time":"7-15 working days","Certification":"CE","Place of Origin":"CHINA","Supply Ability":"2000+pcs+week","Packaging Details":"carton with foma","Motor":"48v1500w brushless gearless","controller":"48v40Amp","brake lever":"electric brake lever","throttle":"thumb or twist","pas":"1:1 Pedal Assistant System","speed":"50-65km\/h","warranty":"24month","battery":"lithium battery","color":"silve or black"}}

{"title":"16'' 1000w cheap electric bike hub motor kits","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/f4\/53\/e7b029e35a37dc7d0e3d83fca6e4-200x200-1.jpg","attrs":{"Price":"$50.00 - $105.00 \/ Set","Minimum Order Quantity":"2 Set\/Sets","Voltage":"48V","Design":"Brushless","Wattage":"> 400w","Motor":"DongNan Branded ,supply by ourself","Warranty":"2 years","Controller":"Germany Quality","Rim":"Silver and green whole rim","Throttle":"twist or thumb","Other conditions":"Contact me for details","wheel material":"iron","Supply Ability":"5000 Piece\/Pieces per Month","Packaging Details":"1set per carton with foam,standard export carton box","Port":"Shanghai","Payment Terms":"LC\/pp"}}

{"title":"60v 72v 84v 5a Electric Bicycle Battery Charger 48V 180W Silver","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/47\/71\/d893462fc2c667b07779ec2f5888-200x200-1.jpg","attrs":{"Price":"3.8 USD TO 8USD","Brand Name":"LA-FAST","Model Number":"48V","Minimum Order Quantity":"100 PCS","Delivery Time":"3-10 DAYS","Certification":"CE","Place of Origin":"CHINA","Payment Terms":"T\/T, L\/C, D\/A, D\/P, Western Union, MoneyGram","Supply Ability":"100000 PCS","Packaging Details":"CARTON BOX","Use":"Standard Battery,balance scooter,Tablet","Type":"Electric","Warranty":"2 Years","Input":"AC 100-240V 50\/60Hz,100 ~ 240VAC,12V\/2A,100 240v ac 50\/60hz","Color":"Black,Blue,black or white,Black or Silver,red&black","Product name":"universal smart rechargeable li-ion lithium ion 18650 battery charger,48v lithium mnc battery charger,Universal Battery Charger,porter cable or black decker battery charger","Output":"12.6v 5a,7.2V -18V 4A,10.8-18V\/3A,4.2V--2*0.5A 4.2V--2*1.0A 4.2V,67.2V 1.8A 2A","Weight":"416G","Material":"ABS+PC,Aluminum,Aluminium Alloy with Fan,ABS+PC Fireproof Material,PC Fireproof Material","Application":"Electric Vehicle,Electric Golf Cart\/electric boat \/electric vehicle \/electric bicycle,3.7V Lithium Rechargeable Battery,Equipment,For 10.8-20V black decker or porter cable battery","Size":"L63.9*W37.7*H27.9mm, 135*90*50, 280*175*90cm, 104.8*60*34MM, 205mm x 121mm x 50mm","Socket standard":"EU\/AU\/UK\/US","Input voltage":"110V\/220V,AC 110-250V,100-240VAC 50\/60Hz","Usage":"Electric toy cars,electric bikes,Portable electric device,2-Cell 7.4V Lithium Battery Pack,etc.","Efficiency":"\u2265 85%","Protection":"Over Voltage,OVP\/OCP\/Short circuit,Short Circuit Protection,Full Protection for Short-Circuit,Over Current","Output current":"0.1 ~ 2A,5A,2a","Output voltage":"67.2V,5 ~ 24 Vdc,16.8V,29v 29.4v,DC 8.4V 1A"}}