... 12-28"wheel,24-48V CE,CCC,EN15194,RoHS DIY electric bicycle kits Electric bike kit 12-28"wheel,24-48V CE,CCC,EN15194 ... ,16inch 28inch wheel optional.DISC brake optionalBattery: 24V/10Ah 36V-10AH,36V-8Ah polymer li-ionAll battery with electronic protection circuitPAS: 1:1 intelligent ...