Car Charger - JEBSENS - 4in1 3.1A Fast Dual USB Car Phone Charger, Voltage Meter Monitor USB Car Charger for Smartphone with Blue LED Voltage Amps and Internal Temperature(Fahrenheit) Display - 15W;

All car owners should know that electric appliances, such as power switch, spark plugs, and other internal electronics can be gradually damaged if the voltage is too high (exceeding normal value by 15%). Similarly, cars will not work proplerly if subject to under-voltage conditions (lower than 10% of threshold).

The JEBSENS 4in1 Dual USB Car Charger with LED Display is a Mutifunctional Tool for you car! It Charges different mobile devices such as iPhone, Android Smart phone, iPad, Camera, PSP, etc. Built in LED Display present to you Fahrenheit, Amperage, and Voltage of your car. This allows you to be more conscious of your vehicle and devices you're charging. Every ten seconds, the display switches between voltage, internal temperature, and total amperage of the devices you are charging.

Features:
Digital LED FAV Display - FAV stands for Fahrenheit, Amperage, and Voltage. Every ten seconds, the display switches between voltage, internal temperature, and total amperage of the devices you are charging.

Be In Tune with Your Vehicle - This device is one of the most helpful gadgets you can buy for your car. The voltage indicates the health of your battery and allows you to know when it's time for a replacement. The temperature helps you to manage the internal temperature of the car. The amperage keeps you informed of the amount of amperage your devices are using.

Overcharge / Overheat Protection - The device auto powers off when input/output is greater than safety current. This ensures that your devices are protected against over-heat, over-current and over-charging. It detects the ambient tempreture when not charging any device; when charging other devices, it shows the tempreture of the Car Charger itself which is a little higher than the ambient.