TP4056 18650 3.7V 4.2V Battery Charging Module with Integrated DC Boost Converter module

TP4056 18650 3.7V 4.2V Battery Charging Module with Integrated DC Boost Converter Module

Overview

•  is a compact and efficient power management solution designed for charging and boosting single-cell lithium-ion batteries. This module combines a reliable TP4056 linear charging controller with an onboard DC boost converter, allowing both safe battery charging and stable boosted output voltage from a single PCB. It is widely used in portable electronics, DIY power banks, and embedded systems.

• TP4056 18650 3.7V 4.2V Battery Charging Module with Integrated DC Boost Converter Module supports standard 18650 lithium-ion batteries and other 3.7V Li-ion or Li-Po cells. By integrating charging and voltage boosting into one module, it simplifies circuit design and reduces the need for multiple power components.

Charging Functionality

• The module uses the TP4056 charging IC, which provides precise constant-current and constant-voltage (CC/CV) charging. This method ensures safe and efficient charging up to a final voltage of 4.2V, which matches the recommended charging profile for lithium-ion batteries.

• In addition, the module includes built-in charging status indicators using onboard LEDs. These indicators clearly show charging and charge-complete states, allowing users to monitor battery status easily during operation.

Integrated DC Boost Converter

• One of the key advantages of this module is the integrated DC boost converter. It steps up the battery voltage from 3.0–4.2V to a stable higher output voltage, typically 5V. Therefore, it allows lithium batteries to power USB devices, microcontrollers, sensors, and other 5V electronics directly.

• Moreover, the boost converter maintains stable output even as battery voltage drops during discharge. This feature improves usability in portable and battery-powered systems.

Protection and Safety

• TP4056 18650 3.7V 4.2V Battery Charging Module with Integrated DC Boost Converter Module commonly includes battery protection features such as over-charge protection, over-discharge protection, and short-circuit protection, depending on the specific board variant.

• These protections enhance battery safety and help extend battery lifespan, which is especially important in DIY and consumer electronics projects.

Design and Integration

• The module features a compact PCB with clearly labeled input, battery, and output terminals. This layout simplifies wiring and reduces the risk of incorrect connections.

• Furthermore, the module accepts 5V input from USB or external power supplies, making it compatible with common chargers, power adapters, and USB ports.

Typical Applications

• DIY power banks

• Portable electronic devices

• Battery-powered microcontroller projects

• IoT and embedded systems

• Rechargeable LED lighting

• Prototyping and electronics education

Key Features

• Designed for 18650 and 3.7V lithium batteries

• TP4056 CC/CV charging controller

• Integrated DC boost converter (typically 5V output)

• USB or 5V input charging

• LED charge status indicators

• Compact and easy-to-integrate design

• Supports safe and efficient battery management

Datasheet (Technical Specifications)

• Charging IC: TP4056

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

• Charge Termination Voltage: 4.2 V

• Input Voltage: 5 V (USB or external)

• Charging Method: Constant Current / Constant Voltage (CC/CV)

• Typical Charging Current: Up to 1 A (board dependent)

• Boost Converter Output Voltage: Typically 5 V

• Protection Features: Over-charge, over-discharge, short-circuit (variant dependent)

• Indicators: Charging and full-charge LEDs

• PCB Size: Compact module form factor

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