TP4056 Li-Ion Battery Charging Module

The TP4056 is a complete constant-current/constant-voltage linear charger board built for single-cell lithium-ion batteries, packed into an SOP package with a low external component count that keeps the design simple and compact. Its widely available Micro USB input connector means charging power can come from almost any standard USB source, and an onboard LED indicator clearly shows the current charging state.

Because the TP4056 handles the full charge curve internally, from constant-current bulk charging through to constant-voltage top-off, it’s a dependable choice for portable applications where board space and design simplicity matter, such as DIY power banks, battery-powered sensors, and wearable electronics. Its low parts count also keeps the module small and inexpensive without sacrificing charging accuracy.

• Input Voltage – 4.5V to 5.5V
• Full Charge Voltage – 4.2V
• Power – 4.2W
• Charging Accuracy – 1.5%
• Charging Indicator – Onboard micro LED
• Input Interface – Micro USB port
• Charging Method – Linear charge
• Operating Temperature – -10°C to +85°C

Compact, accurate, and easy to wire up, the TP4056 Li-ion Battery Charging Module is a dependable core for any single-cell lithium battery charging circuit.