1. It comes with 510 thread, it is compatible with 510/eGo series atomizer/cartomizer.
2. It also comes with short-circuit protection and overcharge protection.
3. 5-click protection: Generally, the battery is shipped in the off position. In off position, the eGo-T will not function even when pressing the button. To turn on battery, press manual button 5 times within 2 seconds. You will see white LED flash. To turn off battery, press manual button 5 times within 2 second as well, the white 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!
4. 15 seconds cutoff time! White LED!
5. It's 3.4V constant voltage output battery. After fully charged and before use, it might be about 4V, and after use, the voltage output should be 3.4V or a little lower.