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

The TP4056 is a lithium battery charger IC designed to provide a constant current/constant voltage (CC/CV) charging profile. It is specifically tailored for charging single-cell lithium-ion batteries. The module integrates overcharge protection, thermal regulation, and a straightforward interface, making it an ideal choice for compact and efficient charging applications.

• Charging single-cell lithium-ion or lithium-polymer batteries
• Power banks and portable battery packs
• DIY electronics projects requiring rechargeable batteries
• Wearable devices and IoT applications
• Solar-powered battery charging systems

The TP4056 module is a compact and efficient charging solution. Below are its key technical details:

The TP4056 module typically has six pins. Below is the pinout and description:

1. Power Input: Connect a 5V DC power source to the IN+ and IN- pins. This can be a USB power source, a DC adapter, or a solar panel.
2. Battery Connection: Connect the lithium-ion battery to the BAT+ and BAT- pins. Ensure correct polarity to avoid damage.
3. Load Connection (Optional): If you want to power an external circuit while charging the battery, connect the load to the OUT+ and OUT- pins.
4. Adjust Charging Current: The default charging current is 1A. To adjust it, replace the onboard resistor (Rprog). Use the formula: [ I_{CHG} = \frac{1200}{R_{PROG}} ] where ( R_{PROG} ) is in kΩ and ( I_{CHG} ) is in mA.
5. Monitor Charging Status: The module has two onboard LEDs:
   • Red LED: Charging in progress.
   • Blue LED: Charging complete.

• Battery Compatibility: Only use the TP4056 with single-cell lithium-ion or lithium-polymer batteries.
• Heat Dissipation: The module may heat up during operation. Ensure proper ventilation or add a heatsink if necessary.
• Input Voltage: Do not exceed the recommended input voltage range (4.5V to 5.5V) to avoid damaging the module.
• Reverse Polarity: Always double-check connections to prevent reverse polarity, which can damage the module and battery.
• Load Sharing: If powering a load while charging, ensure the load current does not exceed the module's capacity.

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

// Define the analog pin connected to the battery's positive terminal
const int batteryPin = A0;

// Define the reference voltage and voltage divider ratio
const float referenceVoltage = 5.0; // Arduino's reference voltage (5V)
const float voltageDividerRatio = 2.0; // Assume a 2:1 voltage divider

void setup() {
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  int analogValue = analogRead(batteryPin); // Read the analog value
  // Calculate the battery voltage
  float batteryVoltage = (analogValue / 1023.0) * referenceVoltage * 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 step down the battery voltage to a safe level for the Arduino's analog input (0-5V).

1. Module Overheating

   • Cause: High input voltage or excessive charging current.
   • Solution: Ensure the input voltage is within the 4.5V to 5.5V range. Reduce the charging current by increasing the value of the Rprog resistor.

2. Battery Not Charging

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

3. Red LED Stays On Indefinitely

   • Cause: Battery capacity is too large, or the charging current is too low.
   • Solution: Increase the charging current by decreasing the Rprog resistor value. Ensure the battery is not damaged.

4. Blue LED Does Not Turn On

   • Cause: Battery is not fully charged or module is malfunctioning.
   • Solution: Allow more time for charging. If the issue persists, check the module for defects.

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

Q2: Can I power the TP4056 module with a solar panel?
A2: Yes, as long as the solar panel provides a stable voltage within the 4.5V to 5.5V range.

Q3: What happens if I connect the battery in reverse polarity?
A3: Reverse polarity can damage the module and the battery. Always double-check connections before powering the module.

Q4: How do I adjust the charging current?
A4: Replace the onboard Rprog resistor with a different value. Use the formula ( I_{CHG} = \frac{1200}{R_{PROG}} ) to calculate the desired charging current.

By following this documentation, you can effectively use the TP4056 module for safe and efficient lithium battery charging.