Battery Technology

TP4056 Battery Charging Mpdule

The TP4056 is a complete constant-current/constant-voltage linear charger for single-cell lithium-ion batteries. Here are its key characteristics:

Charging Specifications:

• Standard charging current: 1A (adjustable with an external resistor)
• Input voltage range: 4.5V-5.5V (typically powered via USB)
• Battery charging voltage: 4.2V ±1%
• Charging accuracy: ±1.5%

Protection Features:

• Over-voltage protection
• Over-current protection
• Reverse polarity protection
• Temperature protection (with optional thermistor)
• Short circuit protection

Status Indicators:

• Red LED: Charging in progress
• Blue LED: Charging complete
• (Some variants may use different LED colors)

Common Applications:

• DIY power banks
• Portable device charging
• Battery-powered projects
• Solar charging systems

Notable Advantages:

• Very low cost
• Widely available
• Simple to implement
• Built-in protection features
• Minimal external components needed

The module is safe to use with most 3.7V lithium-ion batteries when properly connected, but one must always observe proper battery safety practices and ensure correct polarity when connecting due to the risks of fire.

References

• Information on TP4056