TP4056 Lithium Battery Charger Module with Protection – Dual Functions

Wiring Connections

• Input Power:
  • VCC: Connect to 5V power source (micro-USB or directly to input pins).
  • GND: Connect to ground.
• Battery Connections:
  • BAT+: Connect to the positive terminal of the lithium battery.
  • BAT-: Connect to the negative terminal of the lithium battery.
• Charge Current Adjustment:
  • ADJ: Connect a resistor to set the desired charge current. (Refer to the datasheet for resistor values corresponding to different currents.)
• Protection Features:
  • Integrated directly on the module, so no additional connections are required for protection features.

Power

• Power Source:
  • Input Voltage: 4.5V to 5.5V (via micro-USB or input pins)
  • Charging Current: Adjustable up to 1A
• Battery Charging:
  • The module provides a constant current and constant voltage to charge the battery safely.

Input and Output

• Input:
  • Power Input: 5V DC (via micro-USB or directly through input pins)
  • Power Consumption: Based on the charge current and input voltage.
• Output:
  • Battery Output: Provides regulated 4.2V to the connected lithium battery.

Physical Characteristics

• Dimensions:
  • Typically around 25 mm x 20 mm (1 inch x 0.8 inches)
• Weight:
  • Lightweight, generally between 5 g to 10 g (0.2 oz to 0.35 oz)
• Mounting:
  • Usually comes with mounting holes or can be attached using double-sided tape.

Technical Specifications

• Charge Voltage Accuracy: ±1% at 4.2V
• Charge Current Accuracy: ±5%
• Protection Circuitry: Includes overcharge, over-discharge, and short circuit protection.
• Thermal Management: Integrated heat dissipation to handle charging currents.

Additional Features

• Micro-USB Port: For convenient connection to power sources.
• Overcharge Protection: Stops charging when the battery voltage reaches 4.2V.
• Over-Discharge Protection: Disconnects the battery if voltage drops too low to prevent damage.
• Short Circuit Protection: Automatically disconnects in case of a short circuit.

How to Use

• Connecting the Module:

• • Power Source:
    • Connect a 5V power source to the VCC pin or plug into the micro-USB port.
    • Connect the GND pin to the ground.
  • Battery:
    • Connect the positive terminal of the battery to the BAT+ pin.
    • Connect the negative terminal of the battery to the BAT- pin.

• Adjusting Charging Current:

• • Current Setting:
    • Calculate the desired charging current and choose the appropriate resistor for the ADJ pin.
    • Refer to the datasheet for resistor values corresponding to different charging currents.

• Monitoring:

• • LED Indicators:
    • Observe the LED indicators to check the charging status. Typically, a red LED means charging, and a blue/green LED indicates the battery is fully charged.

• Charging:

• • Start Charging:
    • Once connected, the module will start charging the battery according to the set parameters.
  • Completion:
    • When the battery is fully charged, the module will stop charging automatically to prevent overcharging.

• Maintenance:

• • Check Connections: Regularly inspect the connections to ensure they are secure.
  • Clean: Keep the module clean from dust and debris to maintain optimal performance.

• Troubleshooting:

• • No Charging:
    • Verify the power supply is correctly connected and providing the right voltage.
  • Overheating:
    • Ensure the module has proper ventilation and is not subjected to high ambient temperatures.
  • LED Indicator Issues:
    • Check connections and ensure there are no loose or faulty components.

The TP4056 Lithium Battery Charger Module with Protection is a versatile and essential component for safely charging lithium batteries while providing protection against common issues. Its dual-function design makes it a valuable tool for various electronic projects and applications.