Car Battery Monitor with LED Display Voltage and Amperage Automotive Charger

The two USB ports deliver 24W of power and charge up to 4.8A, or 2.4A per port. Easily charge your favorite mobile devices including Galaxy, BlackBerry, MP3 players, digital cameras, PDAs and cell phones. Digital Glow LED Tubes: Monitor vehicle battery voltage when no devices are charging. When charging, the device's charging current is switched between it and the vehicle battery voltage.The LEDs are bright enough to read the screen without being a distraction while driving.
The mini USB car charger automatically turns off when the input/output is safe current, protects against overheating, overcurrent and overcharging.
One of the smallest USB car chargers in the industry, featuring two USB ports and an LED display that is easy to access after dark.
Input voltage: DC 12V-24V
Output voltage: DC 5V
Output current: 4.8A(2.4A+2.4A)
Conversion rate: 95%
Color: black
Material: PC
Size: 2.95 x 1.46 x 1.46 inches

Package contents:
1 * Charger multifunction car
Only the above package content, other products are not included.
Note: Light and different displays may cause the color of the item in the picture to vary. The image is slightly different from reality.A measurement error of +/- 1 to 3 cm is possible.