This Tongsheng/SFM mid drive motor with torque sensor is the cheapest and good torque sensor mid drive motor in china, you can feel the power from your foot to start the ebike, so you don’t need use throttle to start the ebike. TSDZ2 electric bicycle central mid motor with torque sensor and coast/foot brake function. This model with coaster brake function, Foot/coaster brake function —–It means If you bike don’t have any brake lever, you must use the motor with coaster brake function. Speed: 15Km/H-45Km/H top speed 45km/H. 1.36V250W/36V350W TSDZ2 mid drive motor with torque sensor. No brake lever(incompatible with sensor brakes). Speed sensor with magnets. 4: No thumb throttle(incompatible with thumb throttle). E-bus cable set(can compatible till 28inch bike). Easy installtion as 8FUN center motor. VLCD5 or XH18-LCD or VLCD6 without brand on the motor. Special speed sensors, which are more robust, and include a split’Y’ adapter, to hook up a 6V headlight, and 6V taillight, which you can control from the display. 10.1 Battery (Option). 11.1 Battery Charger (EU plug). The Motor for foot/coaster brake build and not for freewheel. Coaster brake function:it is means If you bike don’t have any brake lever, you must use the motor with coaster brake function, otherwise you can choose the motor have a freewheel. How do I know if this mid drive motor fits for my bike? This mid drive motor desighed to fit bike with a 68mm (2.68inch) or 73mm (2.87inch) wide bottom bracket. The inner diamater of the bracket should be not less than 33.5mm. We will send extra washers and bolts for 73mm bottom bracket. After installing the motor. If mechanical collisions happened between motor and frame, Add gaskets, We will send extra 1pcs 42351.0 and1pcs 42351.5 gaskets. If you do not add gaskets, It is easy crack the shell and destroy torque sensor. Speed sensor:Tighten with cable tie, Keeping distance between 10mm to 15mm, The arrow align at magnet. This is foot brake motor, So the 6km/h model can not work. You can choose below battery, which are compitable for the motor. HAILONG G70 36V 20AH Specification:(Include 3A Charger). 4P10S Li-ion 5Ah 21700 40pcs battery cells (the interior battery is SAMSUNG INR21700-50GB Li-ion battery). HAILONG-PLUS 36V 20AH Specification:(Include 3A Charger). 4P10S Li-ion 5Ah 21700 40pcs battery cells (the interior battery is SAMSUNG INR21700-50GB 21700 Li-ion battery). Water Bottle Battery 36V 10.4AH Specification: (2A charger). 4P10S Li-ion 2.6Ah the interior battery is 18650 40pcs battery cells. HAILONG-PRO 36V 12.5AH China cells Specification: (2A charger). 5P10S Li-ion 2.5Ah the interior battery is 18650 50pcs battery cells. Dolphin 36V 12.5AH Specification: (2A charger). 5P10S Li-ion 2.5Ah 18650 50pcs battery cells. HAILONG G56 36V 13AH China cells Specification: (2A charger). 5P10S Li-ion 2.6Ah the interior battery is 18650 50pcs battery cells (China battery cells). 36V 14.4AH Specification: (2A charger). 3P10S Li-ion 4.8Ah 21700 30pcs battery cells the interior battery is SAMSUNG INR21700-48X Li-ion battery. HAILONG G56 36V 15AH Specification:(Include 2A Charger). 3P10S Li-ion 5Ah 21700 30pcs battery cells (the interior battery is SAMSUNG INR21700-50GB Li-ion battery). HAITIAN 36V 10AH Specification: (2A charger). 4P10S Li-ion 2.5Ah the interior battery is 18650 40pcs battery cells. Rated capacity: AH 2. Charging Voltage: 42V 4. Discharge cutoff voltage:27.5V 6. Continuous discharge current: 25A 7. Pulse/Max discharge current 50A 8. Max charging current : 5A 9. Charging temperature: 045°C 10. Dischargeing temperature: -2055 °C 11. Operating voltage:28V42V 12. Weight of battery pack About kg The battery pack fits 36V 250W/350W motor it has no usb power output. 90W/120WLithium Ion Charger Specification Input Voltage: 100-240V/200-240V Output Voltage: 42V (for 10series Lithium Ion battery use) Output Current: 2A Charging Mode: CC-CV Intelligent Charger Super Powerful Charger 2A/3A Weight: 0.65KG/0.8KG. Must charge the battery to fully power at once after received parcel, Must charge the battery to fully power immediately when the battery out of power If this battery is to be stored for more than two months please charge for this for three hours every two months of storage and turn off the switch of battery. Do not connect the positive and negative terminals of battery Do not expose this battery to high temperature such as heating appliances or in direct sunlight Do not submerge this battery in liquid of any kind WARNING Disassemble only by the professionals Do store in a cool dry area out of direct sunlight Do not use any other charger for the one supplies with this battery When this battery is no longer of use please dispose of correctly by returning your supplier or recognized battery collection disposal point. Do not dispose of this battery with your household waste. There will have extra cost if your address is belong to remote areas. The return items must be in original conditions never used.