Vapo E2 Twist battery is the latest model of variable voltage battery . 

It has an inteligent  internal Buck Boost Converter which can adjust the battery voltage from 3.2V at 4.8V .

To change the voltage you must twist the bottom button .  The voltage will change with 0.2V each time you twist the button .

The output voltage is constant until the battery is drained of power .

Technical specifications :

• Thread : 510/eGo 
• Compatible with all eGo atomizers , clearomizers and cartomizers .
• Capacity : 650mah , 900mah, 1100 mah, 1300mah .
• Variable voltage from 3.2V at 4.8V in steps of 0.2V 
• It can be charged with standard 420mAh eGo charger  .
• Charging time : 3.5 hours 
• 5 click protection system 
• Autonomy : 6-8 hours 

Protection systems :

• 5 click protection - Press the button 5 times in 2 seconds to turn on/off the battery .
• Short Circuit Protection: When short circuit happens, the battery will shut down and not function again until short circuit is removed.
• Safety Cutoff/Atomizer Protection: If you press the button for 10 seconds, the battery will be locked until the next press.
  Low Voltage Protection: When the battery voltage is lower than 3.3v, the battery will shut down.

It is recommended to use the battery at a lower voltage and than incease it until you find the right voltage for your atomizer . If you use your battery at a higher voltage it will remain without power faster .

The battery is perfect for Vapo E2 Clearomizer .