This passthrough battery works with all eGo-T and eGo electronic cigarettes.

This is the genuine Joyetech 1000mAh Joye eGo-C USB battery / USB passthrough, it comes with "eGo-CTM" logo, branded laser in the bottom steel plate and "CE" and the WEEE label in the connector part. WEEE label is a dust bin as follows. The crossed lines means that the batteries should not be disposed of in dust bin after they have been used.

Each Joye eGo-C USB battery or Joye eGo-C USB passthrough has a built-in 1000mAh eGo-C battery and a USB port, which allows the user to vape during charging. A fully charged Joye eGo-C USB battery or Joye eGo-C USB passthrough can support a heavy user to vape at least 9 hours! It's sealed to prevent being spoilt by e-juice or e-liquid. Take it as a spare.

It comes with power display function, 5 click protection, lithium battery protection.

Power display function: When the battery power is over 50%, the battery LED is white. When the battery power is between 10% and 50%, the battery LED is sky blue. When the battery power is below 10%, the battery LED is blue.

5-click protection: Generally, the battery is shipped in the off position. In off position, the eGo-C will not function even when pressing the button. To turn on battery, press manual button 5 times within 2 seconds. You will see blue LED flash. To turn off battery, press manual button 5 times within 2 second as well, the blue LED will flash!  "5-click protection" can protect the battery from being activated when you do not want or do not use it. No more firing in your pocket!

lithium battery protection: It has strengthened short circuit protection and over discharge protection based on eGo-T batteries and there is a device inside to prevent overcharging.