All the buyers should have experience to install it. If not, please do not buy it. This is 750W Electric Brushless Motor Kit For Tricycle / Rickshaw / Three Wheels Bike etc. 1.What battery is recommended for this kit? This kit is 48V, you need four 12V batteries, (lead acid or lithium), or two 24V batteries.(60Vneed five 12V lead acid or lithium batteries.) After they are linked together, the recommended capacity >20AH2.Is the kit include batteries? No, the kit includes all the parts you need except batteries to convert the tricycle into electric tricycle.You need to buy the batteries by yourself. The kit includes: 1. 1x 750W brushless motor 2. 1x Motor controller 3. 1x #420 Chain 4. 1x Chain wheel (38 tooth) 5. 1x No teeth freewheel 6. 1x Freewheel adapter 7. 1x Throttle(with key switch and indicator) 9. 1x Reverse switch 11. 1x Brake leverNote: this kit without charger . This 750W conversion kit is suitable for tricycle / rickshaw / three wheels bikeLoad capacity: 500 KG