Description Product Name: Halter Satin Prom Dresses 2017 High Low A-Line Lace up Back Formal Long Draped Evening Gown Party Dresses Special Occasion Dresses Short Description:This gown is designed by the popular designer and beloved by many females. It is free shipping and in high quality and competitive price. --> Purchase Note: This motor is fit for the Bike Bottom Brackets/BB is 68mm-73mm and the Inner Diamaterof the bracket( > 33.5mm) / should be not less than 33.5mm, please check carefully about your bicycle BB size. Motor Specification: Power:750W Voltage:48V Controller Current: 25A No Load Speed(RPM) :140-160 Load Speed(RPM):120-135 MAX Torque:160 N.m Efficiency: > 85% PAS SENSOR : Speed Sensor Reduction Ratio: 1 : 21.9 Centification:CE/EN 14764/ROHS Waterproof Grade:IP65 Net Motor Weight: 4.24kg Motor kits Weight:5.6-6.0kg Bracket bottom length:68mm Max speed:52km/h ( 75Kg Load,44T,different work condition different speed ) Speed within 25-30km/h can help you ride further 48V 17.5Ah Specifications: Normal Voltage: 48V Rated Capacity:17.5AH Battery Cell:Built in Samsung 35ET 3500mah.65PCS Array mode:13s5p Battery size:367.2*90.1*111mm Battery Weight:4.4KG Max Constant Discharge Current:30A Peak current:60A Charge voltage:54.6V Discharge cut off voltage:36.4V Way of Charge:CC/CV Cycle Life:1000 times Charge Temperature:-15-65℃ Discharge Temperature:-15-65℃ Protection Function:Over charge, Over discharge,Over current, Short circuit, Balance Overcurrent protecting:> 30A Battery Range : Keep 25-30Km/h speed can riding about 60km without pedaling.(Driver weight 90kg ride on ordinary roads no losing power.If motor work with rider pedaling can riding about 120km) Packing list: BBS02B 48V 750W Mid Drive Motor * 1 pcs Speed Detecting Sensor + Magnet * 1 set Display * 1 DPC18 750C P850C C965 C961 SW102 Brake Lever * 1 Pair (We can change these to for free,just leave me message ) Thumb Throttle * 1 pcs Screw and Nut Accessories * 1 set 1T4 Cable *1 pcs Crank* 1 pair 48V 17.5Ah Samsung Cells Battery And Charger * 1 Set Gifts: Installation tool* 1 pcs + XT60 Motor Connect To Battery Cable + Label Stickers * 4pcs (For EU)+ Gaskets * 8 Pcs For Bottom Bracket 73mm Warranty Aggrement: Motor Kits,warranty time 12 month except phycial damage and wrong operation. Battery,warranty time 12 month except phycial damage and wrong operation. Accessories,30 days except phycial damage and wrong operation Return & Refund: It is our pleasure to see customers have fun with our products, if you decide to return the items within 15 days after receipt,we will refund you, the return items must be in original conditions. Feedback: Your satisfaction and positive feedback is very important for us, it will be very kind of you to leave us 5 star feedback, if you have any problems, don't hesitate to contact us, we will do our best to service with you. More Description