TP4056 1A Li-Ion/Li-Po charger, USB-C connector, 18650 cells, protection

Li-Ion TP4056 battery charger with USB-C connector

Li-Ion TP4056 battery charger is a compact module that enables efficient and safe charging of lithium-ion batteries, including popular 18650 cells. The device is powered via a USB-C port at 4.5 V - 5.5 V, with the option to alternatively connect power directly to the solder pads. The module is designed for charging Li-Ion batteries that are not equipped with their own protection circuitry.

Key technical specifications

• Power connector: USB-C
• Input voltage: 4.5 V - 5.5 V
• Battery charging voltage: 4.2 V
• Maximum charging current: 1 A
• Operating status indication: built-in LEDs (red - charging, blue - charged)
• Discharge protection: power cut-off below 2.5 V
• Operating temperature range: from -10 °C to +85 °C
• Physical dimensions: 26 mm x 18 mm

Example applications

• Safe charging of popular 18650 lithium-ion cells
• Powering and charging in portable electronic projects
• Building custom emergency power systems and power banks
• Restoring power systems in small mobile devices
• Handling Li-Ion batteries without factory protection circuitry

Benefits

• Connection versatility thanks to the modern, widely used USB-C standard
• Battery protection provided by integrated over-discharge protection below 2.5 V
• Process efficiency ensured by a maximum charging current of 1 A
• Easy monitoring of the current operating state via clear LED indicators
• Space savings in projects thanks to the very small PCB dimensions