18650 Battery Power Bank Case, 10000mAh Marking

This DIY power bank case is designed for four 18650 flat-head or pointed-head cells and is supplied assembled without batteries. Install compatible cells in the holder, observing the polarity diagrams; the case has reverse-polarity protection.

It can also be used with fewer cells, and the cell capacity depends on the batteries fitted. The case has two USB outputs, a Type-C input, and a digital charge display.

Its printed marking is 10000mAh; the printed ratings show DC 5V/2A input and USB outputs of 5V/1A and 5V/2A, while the description text gives an output rating of 5V/2.4A. The body is ABS and measures 115 × 82 × 26 mm. Batteries are not included.