DC 6V-40V To 5V 3A Double USB Charger DC-DC Step-down Converter Module Description: Short circuit protection DIY Mobile Power Supply, 5V output for charging Phone, MP3, MP4, , etc Specifications: Input voltage: 6V-40V Output voltage: 5V Output current: 3A Switching frequency: 150KHZ Conversion efficiency: 92% Working temperature: -40 to +85 degree Centigrade Color: Red Size: Read more about DC 6V-40V To 5V 3A Double USB Charger DC-DC Step-down Converter Module[…]