USB Type-C Lithium Battery Charger Module with Step-Up Output

This module is designed for charging a single lithium-ion or lithium-polymer (LiPo) battery cell, such as an 18650, or multiple cells connected in parallel. It features a USB Type-C charging port and includes a step-up (boost) function to power external loads via a standard USB output.

Specifications

• Input voltage: 4.5 V to 5.5 V (via USB Type-C)
• Full charge voltage: 4.2 V
• Maximum charging current: 2 A (adjustable via RPROG resistor)
• Charge accuracy: ±1.5 %
• USB output: step-up function for external power supply
• LED indicators: red while charging, green when fully charged
• Operating temperature: -10 °C to +85 °C

The charging current can be adjusted by changing the value of the RPROG resistor. This module is suitable for projects requiring a self-contained and rechargeable power source.