Mini USB 5V 1A 18650 TP4056 Lithium Battery Charger Module Charging Board

This CN3791 module is a Maximum Power Point Tracking (MPPT) solar charger designed for efficient charging of single-cell lithium batteries using solar panels. MPPT technology ensures maximum energy harvest by automatically monitoring and adapting to the solar panel's power output, which is particularly useful in variable light conditions. The module is ideal for applications where the input voltage and battery voltage difference is significant.
Key Features: This is a complete charge management solution for single-cell (nominal voltage 3.7V) lithium batteries, charging them up to 4.2V. The module includes several protective features, including battery overvoltage protection, soft start, trickle charging for deeply discharged batteries, and an automatic recharge function. Setup is simplified thanks to 2-pin JST/PH2.0 connectors. Additionally, there are status indicators to display charging and its completion. The module's PWM switching frequency is 300KHz and it is designed to operate in the temperature range of -40°C to +85°C.