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The TP4056 Micro USB-B Lithium Battery Charging Module is a compact 5V to 4.2V charger ideal for single-cell 3.7V Li-ion or LiPo batteries (e.g., 18650s). Providing an adjustable 1A charge current, it is widely used in DIY electronics, power banks, and IoT projects. [1, 2, 3, 4, 5]
Key Features