500W Electric Mountain Bike with CE Brushless hub motor Lithium battery: 36V, 16Ah or 10Ah Alloy frame 500W Electric ... speed, power and light on/off switchFenderPlasticPlasticPower of motor250W brushless, 8FUN brand500W brushless, 8FUN brandBattery capacityLi-ion battery 36V / 10AhLi-ion battery ...