High Quality DC9-40V to 5V USB Car Charger Step-Down Power Supply Module. Application: the device with 5V Power supply, electrical appliances whose power less than 25W , such as mobile phones, tablet pc, navigation systems, driving recorder,also can be used on the LED power supply. With 4 USB port, you can also connect four USB standard device simultaneously. Connect positive and negative terminals of the battery to the input positive and negative,then the input is completed. Input voltage: 9~40V Output: standard USB Output current: MAX 5A (Total for 4 channels) Size: 4.8 x 4 x 2.2mm Weight: 39g |