How to Use Modul Charging TP4056: Examples, Pinouts, and Specs

The TP4056 is a lithium battery charger module designed for charging single-cell lithium-ion batteries. It employs a constant current/constant voltage (CC/CV) charging method, ensuring safe and efficient charging. This module is equipped with overcharge protection, thermal regulation, and a straightforward interface, making it ideal for integration into a wide range of electronic projects.

• Charging single-cell lithium-ion or lithium-polymer batteries.
• Power banks and portable electronic devices.
• DIY electronics projects requiring rechargeable battery integration.
• Battery-powered IoT devices.
• Solar-powered battery charging systems.

The TP4056 module is compact and highly efficient, with the following key specifications:

The TP4056 module has six pins, as described in the table below:

1. Power Input: Connect a 5V power source (e.g., USB adapter or power bank) to the IN+ and IN- pins. Ensure the input voltage is within the range of 4.5V to 5.5V.
2. Battery Connection: Connect the positive terminal of the lithium-ion battery to the BAT+ pin and the negative terminal to the BAT- pin.
3. Load Connection (Optional): If your module version includes OUT+ and OUT- pins, you can connect a load to these pins. Note that the load will draw power directly from the battery.
4. Charging Current Adjustment: The default charging current is set to 1A. To adjust the charging current, replace the onboard resistor (Rprog) with a resistor of the desired value. Use the formula:
   [ I_{CHG} = \frac{1200}{R_{PROG}} ]
   where ( I_{CHG} ) is the charging current in mA, and ( R_{PROG} ) is the resistor value in kΩ.

• Battery Compatibility: Ensure the battery is a single-cell lithium-ion or lithium-polymer type with a nominal voltage of 3.7V and a maximum voltage of 4.2V.
• Heat Dissipation: The module may heat up during operation. Ensure proper ventilation or heat sinking if necessary.
• Reverse Polarity Protection: The TP4056 module does not have built-in reverse polarity protection. Double-check connections before powering the module.
• Avoid Overloading: Do not exceed the maximum input voltage (5.5V) or charging current (1A) to prevent damage to the module.

The TP4056 module can be used to charge a battery that powers an Arduino UNO. Below is an example of how to monitor the charging status using the Arduino:

// Example code to monitor TP4056 charging status with Arduino UNO
const int chargingPin = 2;  // Connect to the CHRG pin of the TP4056 module
const int donePin = 3;      // Connect to the DONE pin of the TP4056 module

void setup() {
  pinMode(chargingPin, INPUT);
  pinMode(donePin, INPUT);
  Serial.begin(9600);
}

void loop() {
  int chargingStatus = digitalRead(chargingPin);
  int doneStatus = digitalRead(donePin);

  if (chargingStatus == LOW) {
    // CHRG pin is LOW when charging is in progress
    Serial.println("Battery is charging...");
  } else if (doneStatus == LOW) {
    // DONE pin is LOW when charging is complete
    Serial.println("Charging complete!");
  } else {
    // Both pins HIGH indicates no battery or no charging
    Serial.println("No battery detected or not charging.");
  }

  delay(1000);  // Wait for 1 second before checking again
}

1. Module Overheating:

   • Cause: High charging current or insufficient ventilation.
   • Solution: Reduce the charging current by increasing the Rprog resistor value or improve ventilation.

2. Battery Not Charging:

   • Cause: Incorrect wiring or incompatible battery.
   • Solution: Verify all connections and ensure the battery is a single-cell lithium-ion or lithium-polymer type.

3. No Output Voltage on OUT+ and OUT- Pins:

   • Cause: Some TP4056 modules do not include output pins.
   • Solution: Check the module version and ensure it supports output functionality.

4. LED Indicators Not Working:

   • Cause: Faulty module or incorrect power supply.
   • Solution: Test the module with a different power source and verify the LED connections.

Q1: Can I use the TP4056 module to charge multiple batteries in series?
A1: No, the TP4056 is designed for single-cell lithium-ion or lithium-polymer batteries only. Charging multiple batteries in series requires a specialized charger.

Q2: What do the LEDs on the module indicate?
A2: The red LED indicates charging is in progress, while the blue or green LED indicates charging is complete.

Q3: Can I power my project directly from the TP4056 module while charging the battery?
A3: Yes, if your module version includes OUT+ and OUT- pins. However, ensure the load does not exceed the battery's discharge capacity.

Q4: How do I calculate the charging time for my battery?
A4: Charging time can be estimated using the formula:
[ T_{CHG} = \frac{C}{I_{CHG}} \times 1.2 ]
where ( C ) is the battery capacity in mAh, and ( I_{CHG} ) is the charging current in mA. The factor 1.2 accounts for charging inefficiencies.