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

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

This module is a combination of a 2A charger and a voltmeter. It can convert an input voltage of 4.5-40V to a stable output of 5V 2A. It has a USB port that can be used to charge your phone or other devices. However, you should note that the output voltage and current are fixed at 5V 2A.

To use this module, you need to connect it to a power source and then you can see the input voltage on the display. If you want to charge your device, you have to press the “Output Enable” button and the USB power indicator will light up. The module will then provide 5V 2A at the USB port.

If you want to turn off the voltmeter, you can press the “Low Power” button and the module will enter a low-power standby mode. The USB output will also be shut down.

This module is suitable for monitoring the battery voltage of cars, motorcycles, or other vehicles. It can also supply enough power for various USB devices.

Features 

The voltmeter has an automatic calibration function.

With reverse connection protection.

With overheat protection and short circuit protection.

High efficiency and low ripple.

With USB power indicator light.

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.s-l1600

Application

Cars and Electric Bikes

Motorcycle for voltage measurement and to charge the phone

iPads, Mobile Phones

Mp3 Devices

Note: 

This module default D + D- short, most of the cell phone charger is compatible, and set aside a variety of mobile phones identification resistor installation location, if you need to add the identification resistor, please connect D + D- wires cut, then added.

Package Includes :

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