4 pieces Tp4056 charging module. The input port is a MICRO USB. The red LED indicates the charge phase and the green LED indicates the end of charge. Input voltage: 5V Charge interruption voltage: 4.2 V ± 1% Maximum charge current: 1000 mA Battery overload protection voltage: 2.5 V Supercorrent battery protection current: 3A Card size: 2.6 * 1.7 cm It can be used for voltage 3.6 3.7 V, etc. 18650, charge protection and download of the battery to polymers and other lithium batteries, single or multiple parallel.
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