<p>You can charge the switch joycon within 2 hours and no need to remove them as soon as the controllers are fully charged, because both the switch controllers and the switch controllers charging dock have built-in overcharge intelligent chips, which can be used to avoid overcharging, over-currents, over-heating, over-voltage and short-circuits. The Joy-Con charger has built-in an additional light guide plate to reflect the green TV light on the dock, which will show the TV modes (On or off).</p>