City electric bike With 36v/10ah lithium 180-250w brushless hub motor 3 speed available Light weight,high quality Electric system: MotorHigh ... speed brushless, from 8FUN. -180-250W,350W,500WBattery36V / 10 Ah- ... 16AH Li-ion or Manganese lithium battery . - with electric protection circuit.PAS1: ...