2 PIECES 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 charging. Input voltage: 5V Charge cut-off voltage: 4.2V±1% Maximum charging current: 1000mA Battery overcharge protection voltage: 2.5V Battery over-current protection current: 3A Card size: 2.6*1.7cm Can be used for voltage 3.6 3.7V, etc. 18650, charging and discharging protection of polymer battery and other lithium batteries, single or multiple parallel.
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