tp4056 charging module. The input port is a 5-pin USB type C. the red led indicates the charging phase and the green led indicates the end of the charge. Input voltage: 5V Charge cut-off voltage: 4.2V ± 1% Maximum charge current: 1000mA Battery Overcharge Protection Voltage: 2.5V Battery overcurrent protection current: 3A Card size: 2.6*1.7cm Can be used for voltage 3.6 3.7V, etc. 18650, charge and discharge protection of polymer and other lithium batteries, single or multiple parallel.
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