How to Use Type-c Power Bank Module: Examples, Pinouts, and Specs

The Type-C Power Bank Module, manufactured by Arduino/ESP32, is a compact and efficient energy management solution designed for charging devices via a Type-C USB connection. This module integrates advanced features such as overcharge protection, battery level indicators, and support for fast charging. It is ideal for portable power bank applications, DIY electronics projects, and energy storage systems.

• Portable power banks for smartphones, tablets, and other USB-powered devices.
• DIY electronics projects requiring a rechargeable power source.
• Backup power solutions for small IoT devices.
• Integration into wearable technology for on-the-go charging.

The following table outlines the key technical details of the Type-C Power Bank Module:

The module includes several pins and connectors for input, output, and battery connections. The table below describes each pin:

1. Connect the Battery: Attach a 3.7V Lithium-Ion or Lithium-Polymer battery to the BAT+ and BAT- terminals. Ensure correct polarity to avoid damage.
2. Power Input: Use a Type-C USB cable to connect the module to a 5V power source for charging the battery.
3. Output Connection: Connect the device to be charged to the OUT+ and OUT- terminals or use the Type-C output port.
4. Monitor Battery Level: Observe the LED indicators to check the battery charge status:
   • 1 LED: 25% charge
   • 2 LEDs: 50% charge
   • 3 LEDs: 75% charge
   • 4 LEDs: 100% charge

• Battery Selection: Use only high-quality 3.7V Lithium-Ion or Lithium-Polymer batteries to ensure safety and optimal performance.
• Heat Management: Avoid operating the module in high-temperature environments to prevent overheating.
• Fast Charging: Ensure the connected power source supports fast charging if you intend to use the module's fast charging feature.
• Polarity Check: Double-check all connections to avoid reversing polarity, which can damage the module.

The Type-C Power Bank Module can be used to power an Arduino UNO. Below is an example of how to connect and use the module:

1. Connect the OUT+ and OUT- terminals of the module to the Arduino UNO's 5V and GND pins, respectively.
2. Ensure the battery is fully charged before powering the Arduino UNO.

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

// Blink an LED using power from the Type-C Power Bank Module
const int ledPin = 13; // Pin connected to the onboard LED

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

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

1. Module Not Charging the Battery

   • Cause: Incorrect battery connection or damaged battery.
   • Solution: Verify the battery polarity and ensure the battery is functional.

2. No Output Voltage

   • Cause: Battery is fully discharged or module is damaged.
   • Solution: Recharge the battery or inspect the module for physical damage.

3. LED Indicators Not Working

   • Cause: Faulty LEDs or improper connections.
   • Solution: Check the LED connections and replace any damaged LEDs.

4. Overheating During Operation

   • Cause: Excessive current draw or high ambient temperature.
   • Solution: Reduce the load on the module and ensure proper ventilation.

Q: Can I use this module with a 12V battery?
A: No, the module is designed for 3.7V Lithium-Ion or Lithium-Polymer batteries only.

Q: Does the module support reverse charging?
A: No, the module does not support reverse charging. Always connect the battery and load correctly.

Q: Can I charge multiple devices simultaneously?
A: Yes, but ensure the total current draw does not exceed the module's maximum output current (3A).

Q: Is the module compatible with fast charging protocols like QC or PD?
A: The module supports basic fast charging but may not be fully compatible with advanced protocols like Quick Charge (QC) or Power Delivery (PD). Check the specifications of your power source and device for compatibility.