... with lead-acid battery 2)good qualtiy 3)CE certificate electric bicycle conversion kitsIt is easy to install on most of bikes ... tube and tire, motor controller, smart charger, battery level indicator, brake handles, twist throttle, bracket, battery bag. Hub motor: 24V or ... : 13kgs Option:Battery: 12v, 12ah, lead acid sealedBattery case: Plastic electric bicycle conversion kits