Surly it's USB current not charge current @ 0.9 A from a 1 A supply, unless it's the 4.2 V to each of the 3 cells.Someone asked about the visibility of charging info. From top to bottom I configured the display to show the incoming USB voltage, charging current, battery voltage during charge. You can choose different variables during the charging display independent of the 3 values shown during normal vaping.
It is currently being charged by a 1A wall-wart.
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