... kits with lithium battery 2)good quality 3)CE certificate electric bicycle conversion kitsIt is easy to install on most of bikes ... bag, brake handles, twist throttle, bracket . Hub motor: 24V , 180-250W, DC, brushless, quiet and maintenance free,water proofTop speed: 25km ... Option:Battery: 24V8AH or 24V10AH , Lithium battery Battery case: Plastic electric bicycle conversion kits