How to Use TP4056 + DW01: Examples, Pinouts, and Specs

The TP4056 + DW01 is a lithium-ion battery charging and protection module manufactured by Makers. It combines the TP4056 linear battery charger IC with the DW01 battery protection IC, providing a compact and efficient solution for charging and safeguarding single-cell lithium-ion or lithium-polymer batteries. The module is widely used in portable electronics, DIY projects, and battery-powered devices due to its simplicity, reliability, and integrated safety features.

• Charging single-cell lithium-ion or lithium-polymer batteries
• Power banks and portable chargers
• Wearable devices
• DIY electronics projects
• Battery-powered IoT devices

1. Power Supply Connection: Connect a 5V DC power source (e.g., USB) to the IN+ and IN- pins. Ensure the input voltage is within the 4.5V to 5.5V range.
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: If you want to power a load while charging the battery, connect the load to the OUT+ and OUT- pins.
4. Adjust Charging Current: The charging current can be adjusted by changing the value of the resistor connected to the PROG pin of the TP4056 IC. For example:
   • 1.2kΩ resistor = 1A charging current (default)
   • 2kΩ resistor = 0.5A charging current
5. LED Indicators:
   • Red LED: Charging in progress.
   • Blue LED: Charging complete.

• Battery Compatibility: Use only single-cell lithium-ion or lithium-polymer batteries with a nominal voltage of 3.7V.
• Heat Dissipation: The TP4056 IC may heat up during charging. Ensure proper ventilation or add a heatsink if necessary.
• Avoid Reverse Polarity: Double-check the polarity of the battery and power supply connections to prevent damage.
• Load Current: Ensure the load current does not exceed the module's overcurrent protection limit (3A typical).

The TP4056 + DW01 module can be used to power an Arduino UNO from a lithium-ion battery. Below is an example of how to monitor the battery voltage using the Arduino's analog input.

• Connect the OUT+ pin of the TP4056 module to the Arduino's VIN pin.
• Connect the OUT- pin of the TP4056 module to the Arduino's GND pin.
• Use a voltage divider circuit to step down the battery voltage for safe measurement by the Arduino's analog pin.

// Define the analog pin connected to the voltage divider
const int batteryPin = A0;

// Define the voltage divider ratio (e.g., R1 = 10kΩ, R2 = 10kΩ)
const float voltageDividerRatio = 2.0;

// Reference voltage of the Arduino (5V for most boards)
const float referenceVoltage = 5.0;

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

void loop() {
  int analogValue = analogRead(batteryPin); // Read the analog pin
  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
}

1. Module Overheating:

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

2. Battery Not Charging:

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

3. No Output Voltage:

   • Cause: Battery is overdischarged or module is damaged.
   • Solution: Check the battery voltage. If it is below 2.4V, precharge the battery using a dedicated charger.

4. LEDs Not Working:

   • Cause: Faulty LEDs or incorrect wiring.
   • Solution: Inspect the LEDs and connections. Replace faulty components if necessary.

Q: Can I use the TP4056 + DW01 module to charge multiple batteries in series?
A: No, the module is designed for single-cell lithium-ion or lithium-polymer batteries only.

Q: How do I adjust the charging current?
A: Change the resistor connected to the PROG pin of the TP4056 IC. Refer to the datasheet for resistor values corresponding to different charging currents.

Q: Is it safe to leave the battery connected to the module after charging?
A: Yes, the DW01 protection IC prevents overcharging and overdischarging, ensuring battery safety.

Q: Can I power a load while charging the battery?
A: Yes, the module supports simultaneous charging and discharging, but ensure the load current does not exceed the module's limits.