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 device combines a 2A charger with a voltmeter, capable of converting an input voltage range of 4.5-40V down to a fixed output of 5V 2A. It features a USB port for charging phones or other devices, though it’s important to note that the output is set at 5V 2A.

 

To operate this module, connect it to a power source; the input voltage will then be displayed. To charge a device, press the “Output Enable” button, which activates the USB power indicator, and 5V 2A will be supplied to the USB port.

 

For turning off the voltmeter, press the “Low Power” button, which puts the module into a low-power standby mode and deactivates the USB output.

 

This module is ideal for monitoring vehicle battery voltage and providing power to 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.