TP4056 1A Li-ion Battery Charging Board – Micro USB with Dual Protection (Overcharge/Over-discharge)

Overview

The TP4056 Micro USB Battery Charger is a complete constant-current/constant-voltage linear charger for single-cell lithium-ion batteries. This specific module includes the DW01A and 8205A protection ICs, which safeguard your battery against over-voltage, under-voltage, and over-current. Whether you are building a portable power bank, a solar-powered sensor, or a handheld toy, this module ensures your lithium battery stays healthy and safe.

Key Features 

• Dual Protection: Includes battery protection circuitry to prevent discharge below 2.4V and over-current scenarios.

• Plug-and-Play: Features a standard Micro USB port for easy charging via any phone charger or PC port.

• Status LEDs: Two onboard LEDs: Red for “Charging” and Blue/Green for “Fully Charged.”

• Programmable Current: Default 1A charging rate (can be adjusted by changing the $R_{prog}$ resistor).

• Compact Size: Small enough to be tucked away in the tightest of project enclosures.

Technical Specifications

Wiring Guide

• B+ / B-: Connects directly to the Lithium Battery terminals.

• OUT+ / OUT-: Connects to your project (the load).

• Input Pads: Alternative to Micro USB for 5V input.

Note: Always connect the battery before connecting the load to ensure the protection circuit initializes properly.