TP4056 / 03962A Lithium Battery Charging Modul

The TP4056 / 03962A Lithium Battery Charging Module is a high-quality charging board designed to safely charge single-cell lithium-ion (Li-ion) and Li-polymer batteries. Featuring the popular TP4056 linear charging IC, it comes with built-in protection for overcharge, over-discharge, and short-circuit, ensuring safe battery operation. The module can be powered via 5V micro-USB input and is compact enough for portable and DIY electronics projects. It is ideal for hobbyists, makers, and anyone working with rechargeable 3.7V cells.

Features

• IC: TP4056 linear charging chip

• Input voltage: 5V DC (via Micro-USB)

• Output voltage: 4.2V max (suitable for 3.7V Li-ion batteries)

• Charging current: Adjustable (commonly 1A, depending on onboard resistor)

• Built-in protection: Overcharge, over-discharge, short-circuit

• LED indicators: Charging (Red) and Fully Charged (Blue/Green)

• Compact PCB design (03962A version)

• Pre-soldered pads for easy battery and load connection

Applications

• Charging single 3.7V Li-ion / Li-polymer batteries (e.g., 18650 cells)

• DIY power banks and portable battery packs

• IoT and Arduino battery-powered projects

• Small robotics and wearable electronics

• Solar-powered battery charging circuits

• Battery backup systems for electronics

• Hobby electronics and STEM learning kits