This is the genuine Joye eGo-T 1000mAh XL Battery  with 5-click protection. The 1000mAh Joye eGo-T XL/mega battery is 25mm longer than regular 650mAh but gives 50% more power.

Compatable with all Joye eGo parts and any 510 threaded atomizer or cartomizer, including eGo-T, eGo mega atomizers and cartomizers

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!

Using these batteries with atomizers below 2 ohms is at the risk of the buyer therefore we cannot offer a warranty other than a 24HR DOA