TP4056 1A Lithium Battery Charger Module (Mini USB, With Protection)

Description

Product Overview

The TP4056 1A Lithium Battery Charger Module is a complete, low-cost charging solution designed for single-cell lithium-ion and lithium-polymer (LiPo) batteries. This compact module combines a TP4056 charger IC with a DW01 battery protection IC, offering both charging and protection functions in one tiny board.

Based on the industry-standard TP4056 chip from Top Power ASIC, this module implements a Constant Current / Constant Voltage (CC/CV) charging algorithm—the correct method for safely charging lithium batteries. It automatically delivers the maximum preset current (1A by default) until the battery reaches 4.2V, then switches to constant voltage mode, gradually reducing the current until the battery is fully charged.

The integrated DW01 protection circuit provides essential safeguards: overcharge protection, over-discharge protection (cutoff at approximately 2.5V), and overcurrent protection (3A typical). This makes the module ideal for charging 18650 cells, pouch batteries, and other 3.7V lithium batteries that lack their own protection circuit.

Whether you are building portable electronics, powering an Arduino project with battery backup, maintaining 18650 cells, or creating custom power banks, the TP4056 module offers a reliable, ready-to-use charging solution. The onboard Mini-USB connector allows direct connection to any standard USB charger or computer port, while alternative solder pads provide DIY wiring flexibility.

Key Features

• Integrated Protection Circuit: Includes DW01 battery protection IC and FS8205 dual MOSFETs, providing overcharge, over-discharge (2.5V cutoff), overcurrent (3A), and short-circuit protection.

• 1A Maximum Charge Current: Default charge current of 1000mA (1A), fully adjustable by changing the programming resistor (RPROG) for lower current applications.

• CC/CV Charging Algorithm: Implements proper Constant Current / Constant Voltage charging method essential for lithium battery safety and longevity.

• Mini USB Input: Onboard Mini-USB connector for easy connection to any standard USB charger, power bank, or computer USB port.

• Dual-Color Status Indicator: Red LED indicates charging in progress; Green LED indicates fully charged or no battery connected.

• Automatic Power Path Management: Supports charging while simultaneously powering a load (output terminals remain active during charging).

• Preset 4.2V Charge Voltage: ±1% accuracy ensures battery is charged to the correct full voltage without risk of overcharging.

• Automatic Recharge: When a fully charged battery drops below 4.05V (approximately 80-90% capacity), a new charging cycle automatically begins.

• Thermal Regulation: Automatically reduces charge current if internal die temperature exceeds safe limits, protecting the chip during high-current charging.

Technical Specifications