• 5-click on/off function. Turn the battery off to prevent misfiring in your pocket or purse.
  
• Overcharge protection. Batteries cannot overcharge, so if you forget them it's ok.
• Battery Indicator Light- White is over 50% charged, light blue at half capacity, dark blue at approx. 20% capacity.

Joyetech added another feature to the upgrade battery. You now have the ability to increase the voltage of the battery.

Normal battery operation is 3.6V. When in the normal mode, the battery light will be white, light blue, or dark blue.
High voltage operation is at 4.2V. When in this mode, the light will glow an amber color. To switch the mode of the battery:

• Power the battery off by clicking the button 5 times.
• While the battery is off, hold the button down until the light blinks (approx. 15 seconds)
• Power the battery back on by pressing the button 5 times.