Electric bicycle E-bike DC Voltage Converter Regulator 30-90V 36V 48V 72V to 12V Ideal for electric bicycle (like headlight ,speaker,audio ,etc.); Input voltage :30-90V; Output voltage: 12V(The actual output is about 11.5V); Output overload and short circuit protection current: 10A; Power:  55W (headlights  45W);