About this product
A TP4056 charger module for a single lithium-ion cell, using a constant-current and constant-voltage profile with a fixed 4.2 V charge voltage and programmable current up to 1 A. Input power is supplied through a USB Type-C connector, and status LEDs indicate charging and completion. The board suits one 3.7 V nominal cell rather than a multi-cell series pack, and over-discharge protection should only be assumed when the additional protection ICs and MOSFETs are fitted.