SPECIFICATIONS

Brand Name: NONE

Condition: New

High-concerned chemical: none

Origin: Mainland China

PN: Micro USB/Type C Li-ion Battery Charger Module

Type: Module

TP4056 Micro USB and Type C Lithium Battery Charger Module - Compact & Safe Charging for 3.7V Li-ion/Poly Cells

Power your portable projects easily with this ultra-compact, feature-rich charging module. Designed specifically for single-cell 3.7V Lithium-ion or Lithium-polymer batteries, it uses the reliable TP4056X chip for safe and efficient charging. Its tiny size (16.5x25mm) and selectable charging current make it the perfect, integrable power solution for DIY electronics, wearables, and backup power applications.

Key Features & Benefits:

• Safe & Intelligent 3-Stage Charging: Implements Trickle, Constant Current (CC), and Constant Voltage (CV) charging phases to protect your battery, maximize lifespan, and optimize charge time.

• Selectable Charging Current: Easily choose between 50mA, 200mA, or 500mA charge rates via solder jumpers on the back. Match the current to your battery's capacity for optimal safety and speed. (Default is 50mA).

• Clear Visual Status Indicator: The onboard LED provides intuitive charging status:

  • Blinking: USB connected, no battery detected.

  • Solid ON: Actively charging.

  • OFF: Charging complete. The LED never drains your battery.

• External Indicator Option: Breakout pads allow you to connect your own status LED when the module is embedded inside your project.

• Built-in Protections: Features thermal regulation to automatically reduce charge current if overheating occurs, ensuring safe operation.

Technical Specifications:

• Input Voltage: 5V (via Micro USB port OR Type C)

• Battery Type: Single-cell 3.7V Li-ion / Li-Po

• Charge Cut-off Voltage: 4.2V ±1%

• Selectable Charge Current: 50mA, 200mA, 500mA

• Operating Temperature: -40°C ~ +85°C

• Dimensions: 16.5 x 25 mm

How to Use & Important Safety Notes:

1. Select Current: Before first use, check and set the desired charge current on the backside solder pads.

2. Connect: Plug in a 5V USB power source (e.g., wall adapter, computer) and connect your battery, observing polarity.

3. Monitor: Use the LED to monitor the charging process.

4. CRITICAL SAFETY RULE: You can use a low current (e.g., 50mA) to charge a large battery (slowly). NEVER use a high current setting (e.g., 500mA) to charge a small capacity battery (e.g., < 150mAh), as this can cause overheating, fire, or explosion. Always match the charge current to your battery's specifications.