DC-DC 4.5-40V To 5V 2A USB Charger Step down Converter Voltmeter Module

Introducing the DC-DC 4.5-40V To 5V 2A USB Charger Step-down Converter Voltmeter Module, a versatile device combining a 2A charger and voltage checker in one.

This module efficiently converts input voltages ranging from 4.5V to 40V into a stable 5V 2A output, making it perfect for charging your USB-powered devices. The USB port allows for convenient charging of phones, tablets, MP3 players, and more. It’s important to note that the output is regulated at a consistent 5V 2A while charging your devices.

Using this module is simple: connect it to your power supply, and the voltage can be monitored in real-time. When you’re ready to charge your devices, simply press the “Output Enable” button, activating the USB power indicator and initiating the 5V 2A output.

To conserve power or when the voltmeter is not needed, you can press the “Low Power” button to enter ultra-low-power standby mode, shutting down the USB output.

With its wide input voltage range, this module is suitable for monitoring battery voltage in vehicles such as cars, motorcycles, or boats. Its output current capability of 5V/2A ensures compatibility with a variety of USB devices, making it a versatile and essential tool for various applications.

Voltmeter Calibration Method

Step1: Press the “Output Enable” button  more than 2 seconds, release, voltmeter flashes, this time into the voltage regulation mode;

Step2: Press the “Output Enable” button (normal speed), the voltage value is adding up a unit; Press the “Low Power” button, minus a unit; Due to a unit is less than 0.1V, the minimum voltage display to 0.1V, so you need to continuously press 1-5 times to see the voltmeter change 0.1V, how many times voltmeter change 0.1V by pressing the button, depending on the current display voltage, the higher the voltage, the fewer the number of press.

Step3: press the “Output Enable” button for more than 2 seconds, release, to exit the voltage calibration mode. Data is not lost after the power failure.

Package Includes:

1 x DC-DC 4.5-40V To 5V 2A USB Charger.