How to Use MINI DC 5V 2.4A CHARGE/DISCHARGE MODULE: Examples, Pinouts, and Specs

The MINI DC 5V 2.4A CHARGE/DISCHARGE MODULE is a compact and versatile electronic component designed for charging and discharging applications. It operates at a voltage of 5V and can handle a current of up to 2.4A, making it ideal for powering small devices, charging batteries, or integrating into portable power systems. Its small form factor and efficient design make it suitable for a wide range of applications, including DIY electronics projects, power banks, and embedded systems.

• Charging lithium-ion or lithium-polymer batteries.
• Powering small electronic devices such as microcontrollers, sensors, or LEDs.
• Integrating into portable power systems like power banks.
• Providing stable 5V output for embedded systems or IoT devices.

The following table outlines the key technical details of the MINI DC 5V 2.4A CHARGE/DISCHARGE MODULE:

The module typically has the following pin configuration:

1. Power Input: Connect a stable 5V DC power source to the VIN pin and the ground of the power source to the GND pin.
2. Output Connection: Connect the device or load to the VOUT pin and its ground to the GND pin.
3. Enable Pin (Optional): If the module includes an EN pin, connect it to a HIGH signal (e.g., 5V) to enable the module or LOW (e.g., GND) to disable it.
4. Charging Applications: For charging batteries, ensure the battery's voltage and current ratings are compatible with the module's output specifications.

• Heat Dissipation: Ensure proper ventilation or heat sinking if the module operates near its maximum current (2.4A) for extended periods.
• Input Voltage: Use a stable 5V DC power source to avoid damaging the module or connected devices.
• Load Compatibility: Verify that the connected load does not exceed the module's maximum output current of 2.4A.
• Polarity: Double-check the polarity of connections to avoid short circuits or damage.

The module can be used to power an Arduino UNO or other microcontroller boards. Below is an example of how to connect the module to an Arduino UNO:

1. Connect the VOUT pin of the module to the 5V pin of the Arduino UNO.
2. Connect the GND pin of the module to the GND pin of the Arduino UNO.
3. Power the module by connecting a 5V DC input to the VIN pin.

Here is a simple Arduino sketch to blink an LED while powered by the module:

// Simple LED Blink Example
// This code blinks an LED connected to pin 13 of the Arduino UNO.
// Ensure the Arduino is powered by the MINI DC 5V 2.4A CHARGE/DISCHARGE MODULE.

void setup() {
  pinMode(13, OUTPUT); // Set pin 13 as an output pin
}

void loop() {
  digitalWrite(13, HIGH); // Turn the LED on
  delay(1000);            // Wait for 1 second
  digitalWrite(13, LOW);  // Turn the LED off
  delay(1000);            // Wait for 1 second
}

1. No Output Voltage:

   • Cause: The module may not be receiving power or the EN pin is not enabled.
   • Solution: Verify the input voltage at the VIN pin and ensure the EN pin is connected to a HIGH signal (if applicable).

2. Overheating:

   • Cause: The module is operating near or above its maximum current rating.
   • Solution: Reduce the load or improve heat dissipation with a heatsink or better ventilation.

3. Output Voltage Drops Under Load:

   • Cause: The input power source is insufficient or the load exceeds 2.4A.
   • Solution: Use a stable 5V DC power source capable of supplying sufficient current.

4. Short Circuit Protection Triggered:

   • Cause: A short circuit occurred on the output side.
   • Solution: Disconnect the load, check for wiring issues, and reconnect after resolving the short circuit.

Q1: Can this module charge a 3.7V lithium-ion battery?
A1: No, this module outputs a fixed 5V and is not designed for charging 3.7V batteries directly. Use a dedicated lithium-ion battery charging module for such applications.

Q2: Can I use this module with a 12V input?
A2: No, the module is designed for a 5V DC input only. Using a higher input voltage may damage the module.

Q3: Is the module suitable for powering Raspberry Pi boards?
A3: Yes, the module can power Raspberry Pi boards that require 5V and draw less than 2.4A. Ensure the total current consumption of the Raspberry Pi and connected peripherals does not exceed the module's maximum output current.

Q4: Does the module have reverse polarity protection?
A4: This depends on the specific model. Check the datasheet or test carefully. To avoid damage, always double-check the polarity of your connections.