Unique Bargains 2pcs tp4057 Charging Module Type-c USB 1A 3.7V Lithium Battery Charger Module Charging Board Black

This is a professional-grade charging module designed for DIY electronics and small appliances, suitable for charging lithium batteries, powering small electrical appliances, and adding charging ports to tablets; It's a good choice for various 3.7V lithium batteries like 18650 and composite ones.

This Li-ion battery charging board offers significant advantages for safe and efficient battery management; Its core benefit is comprehensive protection, including safeguards against over-charging, over-discharging, and over-current; It employs constant current/constant voltage charging with automatic cycle termination and recovery for optimal battery health; The clear dual LED status indicators show charging scenarios, providing user-friendly operation.

Connect a power source to its Type-C input port; Then, connect your lithium battery to the correct output terminals, ensuring proper polarity; The indicator light is off when there is no load, red when charging, and green when fully charged

Only support battery parallel connection, avoid series connection; Always double-check battery polarity before connecting to prevent damage