What do the different LED light colours indicate?

CC_USB2
When Not plugged in:

Off - Light is off by default

Red Blinking - Low Temperature - the battery pack needs to warm up to restore functionality. 

Orange blinking lights = Low Battery - the Charging Case is on “reserve power,” updating docking and sleep status but not charging the Stellar Mics or Space Recorder until connected to power.

When Plugged in:

White (Pulsing) = Charging

White (Steady) = Fully Charged

Off = Not Charging – try another charger.

Off/No lights = Not charging – switch the power supply and USB cable. If this doesn't work, see “My SC Won’t Charge”.