TP4056 Micro USB Lithium Battery Charging Module

The TP4056 Micro USB Lithium Battery Charging Module is a compact, high-efficiency solution for charging single-cell 3.7 V Li-Ion or Li-Po batteries such as popular 18650 cells.
Featuring an integrated micro-USB port, this board supports direct connection to standard USB power adapters and offers automatic cut-off when the battery is fully charged.

Its built-in protection IC (DW01A + dual MOSFET) ensures over-charge, over-discharge, over-current, and short-circuit protection, making it perfect for DIY power banks, IoT devices, solar chargers, and portable electronics.

🔹 Key Features

• Micro-USB Input – Easy charging via standard USB cable.

• 1A Constant-Current/Constant-Voltage Charging – Optimized for 18650 cells.

• Full Protection Circuitry – Over-charge, over-discharge, and short-circuit safeguards.

• Status LEDs – Red for charging, blue/green for full charge.

• Compact PCB – Fits in small enclosures for portable builds.

🔹 Technical Specifications

• Input Voltage: 4.5 V – 5.5 V DC (Micro-USB or solder pads)

• Charge Current: Up to 1 A (adjustable via resistor)

• Charge Cut-off Voltage: 4.2 V ±1%

• Battery Type: Single-cell Li-Ion / Li-Po (3.7 V nominal)

• Protection IC: DW01A with dual MOSFET

• Indicators: Red = charging, Blue/Green = fully charged

• Dimensions: Approx. 25 mm × 19 mm × 1 mm

• Operating Temperature: –10 °C to +85 °C

🔹 Applications & Use Cases

• DIY Power Banks & Portable Chargers

• IoT & Sensor Nodes requiring rechargeable power

• Solar-powered Battery Packs

• Wearable Devices & Robotics

• Arduino & Raspberry Pi battery-backup projects

🔹 Advantages for Makers & Engineers

• Seamless integration with Arduino and Accessories and Electronics Components.

• Micro-USB port eliminates need for extra charging hardware.

• Reliable charging profile extends battery life.

🔹 Safety & Precautions

• Use only with single-cell Li-Ion/Li-Po batteries.

• Ensure good heat dissipation at maximum 1 A current.

• Double-check battery polarity to avoid damage.

• Do not exceed recommended input voltage.

🔗 Helpful Internal Links

• Explore more Power Supply options.

• Pair with Tools and Accessories for wiring and enclosure needs.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The TP4056 Micro USB 18650 Lithium Battery Charging Module offers safe, efficient single-cell Li-Ion/Li-Po charging with built-in protection, micro-USB convenience, and compact size—ideal for DIY power banks, IoT devices, and portable electronics.