Uverbon Car Charger, 5V/3.1A 4 USB Port Safe Smart Quick Car Charger Adapter Volt Meter Car Battery Monitor with LED Voltage & Amps Display for iPhone Xs/X/8/7,Samsung Note 9/ Galaxy S9/ S8/S7- Black;

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 Uverbon 4 USB Port 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 Voltage of your car, charging Voltage and Amperage. This allows you to be more conscious of your vehicle and devices you're charging. Every five seconds, the display switches between car battery voltage, output voltage, 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 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 higher than safety current. This ensures that your devices are protected against over-heat, over-current and over-charging.

Specifications:
- Input: DC 12-24V
- Output: 5V/3.1A

Compatibility:
Almost all the kinds of the mobile device, such as iPhone 7, 7 Plus, 6S, iPad Air, Air 2, Mini 4, 6s, Samsung S6, S6 Edge,Nexus, HTC, LG, SONY, Motorola and others.