ITEM NAME:New 6-24V 12V to 5V 3A CAR USB Charger Module DC Buck Step Down Converter I F3U5 HOT SALE body .shopclass { float: left; width: 100%;.Module Properties: non-isolated buck module (BUCK) synchronous rectification. Output current: 3A MAX. Conversion efficiency: can up to 97.5% (6.5V step down to 5V 0.7A) (after short reverse protection and fuses test value).