Power Bank Kit Akku Ladegerät 5 V = 2,1 A USB 2X 18650 Zum Selbermachen Box für Smartphones
6,65 €
Stable performance, can accommodate 1-2 3.7V 18650 lithium batteries (flat head, pointed universal). Easy to use, this product has a separate circuit with anti-reverse protection and the battery can be installed freely without burning the board.
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