Wacom Cintiq 21UX 2 Tablet Driver 6.3.32-4 Dec 21, 2018
... 690: The battery life indicator for Intuos pen tablets is not correct. The battery life indicator may ... power than is actually available, leading to unexpected tablet power loss. What you can do about it while we fix it: Use your pen tablet with a wired connection or charge your tablet more often than usual. - DTK-2200, 2400 & ...