Two USB ports, support QC3.0 fast charge

 Toyota FJ Cruiser USB Charger FJ QC 3.0 Fast Charge Dual Charging Port Interior Accessories

12.0~12.8V (the normal voltage of the battery before the car is started)

13.0~14.8V (the normal voltage of the battery after the car is started)

Installation: the black wire can be placed on the metal part, useless connection; the red wire can be connected to the fuse box