Digital LED Car Cigarette Lighter Voltmeter Thermometer | 3 in 1 USB Charger for 12V/24V Vehicles

Key Features

• Dual USB Output — The USB output delivers 5V at 2.1A, so you can charge two devices at the same time at a fast rate.
• Real-Time Voltage Monitoring — The display shows your battery voltage in real time on both 12V and 24V systems, helping you track battery health.
• Built-In Temperature Sensor — The built-in sensor reads from -9 to 80 degrees Celsius, so you can keep track of the cabin environment.
• Compact ABS Body — The compact, lightweight ABS body sits neatly on the dashboard without taking up extra space.
• Multi-Function LCD Display — The LCD shows battery voltage, interior temperature and charging status in one place.

Product Specifications

• Color: Black
• Material: ABS + Electronic Components
• Dimensions: 76 × 47 mm (3 × 1.85 in)
• Power: 12V / 24V
• USB Output: 5V 2.1A
• Display: Digital Display
• Temperature Display Range: -9 to 80 degrees Celsius

What It Is / How It Works

This car USB charger is a 3-in-1 unit that combines a USB charging port, a digital voltmeter and a thermometer in one compact device. It plugs directly into a 12V or 24V cigarette lighter socket.

Who It's For / Use Cases

It suits drivers who want to keep an eye on their battery voltage and avoid being stranded with a dead battery. It also suits truck and RV owners who run both 12V and 24V systems and want one tool to monitor them.

How to Use / Care

1. Plug the unit directly into a 12V or 24V cigarette lighter or accessory socket.
2. Plug your phone or tablet into the USB port to charge it while the unit is powered.
3. Read the battery voltage and temperature on the LCD display while the unit is in use.

How to Choose

Check that your vehicle runs a 12V or 24V electrical system, since this unit works with both. If you charge tablets or phones, look at the USB output rating of 5V 2.1A. If you want cabin readings, check that the -9 to 80 degrees Celsius range covers the conditions you drive in.

Frequently Asked Questions

Does this work on both 12V and 24V vehicles?
Yes. It is designed for 12V and 24V electrical systems, so it suits cars, trucks and RVs.

How do I install it in my car?
Plug it directly into your vehicle's 12V or 24V cigarette lighter or accessory socket. No tools or professional skills are needed.

Can I charge my phone and see the voltage at the same time?
Yes. The display shows battery voltage and temperature continuously while the USB port charges your devices.

What temperature range does the thermometer measure?
The built-in thermometer measures from -9 to 80 degrees Celsius.

Is the display bright enough to see during the day?
The digital LED display is designed to be bright and clear, so it is easy to read during the day and at night.