USB Charger / Car Charger 4.5 ~ 40V DC To 5V 2A USB Charger DC-DC Step-down Converter with Voltmeter, USB charging Step-down power supply Module performance and highlights : 1 . ultra wide voltage meter range : DC 4.5~40V 2.5V/2A output current capability ( to stabilize output when the input voltage is 4.5~40V 5.0 V) 3 Read more about USB Charger / Car Charger 4.5 ~ 40V DC To 5V 2A USB Charger DC-DC Step-down Converter with Voltmeter, USB charging Step-down power supply[…]