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TP4056 18650 3.7V/4.2V Battery Charging Module with Integrated DC Boost Converter – Type-C
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🧩 Product Description
This module is an all-in-one Li-ion battery charger and step-up boost converter, powered via a USB Type-C interface. It is designed for charging a single 18650 3.7V lithium battery and providing a boosted adjustable DC output (up to 27V).
Ideal for DIY electronics, portable power banks, and custom USB power solutions, this module simplifies both charging and power delivery with overcurrent protection, stable output, and high efficiency.
✅ Key Features
🔌 Input Interface: USB Type-C
⚡ Charging Voltage: 4.2V (suitable for 3.7V Li-ion cells)
🔋 Charging Current: Max 1A
🔼 Boost Output Voltage: Adjustable from 4.3V to 27V
🔧 Default Boost Output: ~9V (can be changed via potentiometer)
🔄 Output Current Examples:
5V → ~1.4A
9V → ~0.8A
12V → ~0.6A
🛡️ Protections:
Overcurrent protection
Quiescent current: ~0.5mA
🔩 Form Factor: Compact and ideal for embedded projects
📊 Specifications Table
| Parameter | Value |
|---|---|
| Input Voltage | 4.5V – 8V (via USB Type-C) |
| Charging Voltage | 4.2V (standard for 18650 Li-ion) |
| Charging Current | Max 1A |
| Output Voltage | 4.3V – 27V (adjustable) |
| Default Output Voltage | ~9V |
| Output Current (Max) | Up to 2A (depends on load/voltage) |
| Quiescent Current | ~0.5mA |
| Protection | Overcurrent |
⚠️ Important Notes
The module must be connected to a protected 18650 cell, or the project must include a protection mechanism.
The output voltage can be adjusted counterclockwise using a potentiometer.
Discharge (output) current depends on voltage level, battery health, and load; always verify power demands before use.
📦 Use Cases
DIY power banks
Arduino/Raspberry Pi projects
Portable fans/lights
Emergency phone chargers
9V/12V gadgets from a 18650 cell
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