2A 5V Charge Discharge Integrated 3.7/4.2V Li-ion Battery Boost Power Board
6,65 €
Compared with the general lithium battery protection board, the module has four LED indicators to indicate the current power of the lithium battery. Boost efficiency: up to 92%. Key function: if the duration of the key is longer than 50ms but less than 2S, it is short press action.
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