TP4056 Li-Ion / Li-Po Charger Module Specifications

General

• IC: TP4056
• Function: Linear charger for single-cell Li-Ion or Li-Po batteries
• Charging Type: Constant-current / constant-voltage (CC/CV)
• Module Features: Overcharge protection, battery voltage monitoring

Electrical

• Input Voltage: 4.0 V – 8.0 V DC (typical 5 V USB input)
• Charging Current: Adjustable, typically 1 A max (set via resistor, default ~1 A)
• Charge Voltage: 4.2 V ±1% (for single-cell Li-ion)
• Quiescent Current: < 100 µA

Performance

• Charging Mode: CC/CV
• Charge Termination: 100 mV voltage drop detection (automatic termination)
• Input Reverse Polarity Protection: No (some modules include protection diode)
• Output Protection: Overvoltage, overcurrent (depends on module)

Indicators

• CHRG LED: Red LED indicates charging in progress
• STDBY LED: Blue or green LED indicates charge complete

Physical

• Module Dimensions: ~25 mm × 18 mm × 4 mm
• Weight: ~3–4 g

Applications

• Charging single-cell Li-Ion / Li-Po batteries
• DIY power banks
• Battery-powered IoT / Arduino projects
• Small electronic devices and gadgets