How do I know when the HyperJuice Stand is fully charged? Shirley June 21, 2013 23:08 Follow When recharging the HyperJuice Stand, the LED will keep flashing until all 5 LEDs stay at GREEN, then the unit is fully charged. Tags: hyperjuice stand fully charged Related articles English user manual for HyperJuice AC battery What does the HyperJuice Stand come with? My fully charged HyperJuice external battery does not last longer than what is advertised. Comments 0 comments Please sign in to leave a comment.