Power on the go! The ELECTRON™ USB Car Charger allows you to quickly charge multiple devices with 2.1 amps of power per USB port, producing a combined total output of 4.2 amps. The intelligent circuit identifies the connected devices and adjusts output automatically for optimized charging. Eight bright green LED lights add a visual ambiance and increased visibility at night. Full-color Fireglaze™ graphics logo imprint front and center makes the promo highly visible inside.