Issue: The power indicators on the light turn green while charging, but they remain red when the light is removed from the charger. r.
Check if the light is in "Lockout" mode. When the light is locked, the power indicator will always remain red once the light is taken off the charger.
To unlock the light, point it at your palm, then press and hold the switch for 2 seconds, or until the light (or laser or UV light) turns on. Once unlocked, you can charge and use the light as usual, and the power indicator will correctly reflect the battery level.