Step 1:
To charge your rechargeable nHance AS20i 3D glasses use the Micro-USB cable given from the box.
Step 2:
The charging port is situated at the top-notch of the nose-bridge. Insert the USB cable in the charging slot connected to any AC adopter, PC or Laptop.
Step 3:
Now plug the charger and press the power button for two seconds and the LED light will blink Red every second when the battery is charging.
Step 4:
After an hour check if the LED blinks green. Once the battery is fully charged the LED light will blink Green every two seconds.
Step 5:
Now unplug the charger and press the power button for two seconds for the glasses to turn off.