Efest Slim K4 USB-C Battery Charger Specifications:
Four-bay charger can charge up to four batteries simultaneously. Compatible with many battery sizes, including 18650, 20700, 21700 & 26650. Charging speed: 4 x 0.5A, 3 x 0.5A, 2 x 1A, 1 x 1A. Automatically stops charging.
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