Lithium Li-Ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module TP4056 Kit Parts

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Description An all-in-one lithium battery management solution combining a TP4056 3.7V/4.2V linear charger controller with an integrated DC-DC step-up boost converter. Designed for single-cell 18650 and LiPo battery setups, this compact module simultaneously handles safe USB battery charging while boosting output voltage up to higher adjustable DC levels (typically 5V to 27V) to run electronics directly from the battery.