How to Use Step Up Boost Liion Battery Charger Board DDTCCRUB 3S2A: Examples, Pinouts, and Specs

The Step Up Boost Li-ion Battery Charger Board DDTCCRUB 3S2A is a specialized circuit board designed to charge lithium-ion batteries. It is capable of boosting voltage to support 3 cells in series (3S) with a maximum output current of 2A. This component is ideal for applications requiring efficient charging and voltage regulation for 3S battery packs, such as portable electronics, DIY power banks, and robotics.

• Charging 3S lithium-ion battery packs in portable devices
• Powering small robotics and drones
• DIY power banks and backup power systems
• Applications requiring stable voltage boosting for 3-cell battery configurations

The following table outlines the key technical details of the Step Up Boost Li-ion Battery Charger Board DDTCCRUB 3S2A:

The board features the following pins and connectors:

1. Connect the Input Voltage:

   • Connect a DC power source (5V to 12V) to the VIN+ and VIN- terminals.
   • Ensure the input voltage is within the specified range to avoid damage.

2. Connect the Battery Pack:

   • Attach the positive terminal of the 3S lithium-ion battery pack to the B+ pin.
   • Attach the negative terminal of the battery pack to the B- pin.

3. Connect the Output Load (Optional):

   • If you need to power an external load, connect it to the OUT+ and OUT- terminals.
   • Ensure the load does not exceed the maximum output current of 2A.

4. Monitor the Charging Status:

   • Observe the LED indicators:
     • Red LED: Charging in progress.
     • Green LED: Charging complete.

• Input Voltage: Always ensure the input voltage is within the 5V to 12V range. Exceeding this range may damage the board.
• Battery Compatibility: Use only 3S lithium-ion battery packs. Connecting incompatible batteries may result in improper charging or damage.
• Heat Dissipation: The board may heat up during operation. Ensure proper ventilation or use a heatsink if necessary.
• Polarity: Double-check all connections for correct polarity to prevent short circuits or damage.

The Step Up Boost Li-ion Battery Charger Board can be used to power an Arduino UNO via its VIN pin. Below is an example code to monitor the battery voltage using the Arduino's analog input:

// Example code to monitor battery voltage using Arduino UNO
const int batteryPin = A0; // Analog pin connected to battery output
const float voltageDividerRatio = 4.2; // Adjust based on resistor values used

void setup() {
  Serial.begin(9600); // Initialize serial communication
  pinMode(batteryPin, INPUT); // Set the battery pin as input
}

void loop() {
  int rawValue = analogRead(batteryPin); // Read the analog value
  float batteryVoltage = (rawValue * 5.0 / 1023.0) * voltageDividerRatio;
  
  // Print the battery voltage to the Serial Monitor
  Serial.print("Battery Voltage: ");
  Serial.print(batteryVoltage);
  Serial.println(" V");
  
  delay(1000); // Wait for 1 second before the next reading
}

Note: Use a voltage divider circuit to scale down the battery voltage to a safe range for the Arduino's analog input (0-5V). Adjust the voltageDividerRatio based on the resistor values used.

1. Board Not Powering On:

   • Cause: Input voltage is too low or not connected properly.
   • Solution: Verify the input voltage is within the 5V to 12V range and check the connections.

2. Battery Not Charging:

   • Cause: Incorrect battery connection or incompatible battery type.
   • Solution: Ensure the battery is a 3S lithium-ion pack and check the polarity of the connections.

3. Excessive Heat:

   • Cause: High input current or insufficient ventilation.
   • Solution: Reduce the input current or improve heat dissipation with a heatsink or fan.

4. LED Indicators Not Working:

   • Cause: Faulty LEDs or incorrect wiring.
   • Solution: Check the LED connections and replace faulty LEDs if necessary.

• Can I use this board with a 2S or 4S battery pack?

  • No, this board is specifically designed for 3S lithium-ion battery packs.

• What happens if the input voltage exceeds 12V?

  • Exceeding 12V may damage the board. Always use a regulated power supply within the specified range.

• Can I use this board to power devices directly?

  • Yes, you can connect a load to the OUT+ and OUT- terminals, but ensure the load does not exceed 2A.

• Is reverse polarity protection included?

  • No, the board does not have reverse polarity protection. Double-check all connections before powering on.

This documentation provides a comprehensive guide to using the Step Up Boost Li-ion Battery Charger Board DDTCCRUB 3S2A effectively and safely.