These true Joyetech batteries are universal and fit all eGo and 510 products.

3.3v Rechargeable battery with 650mah capacity will last a very long time between charges.

These batteries have a safety feature that will de-activate the button so that the battery can be stored without accidently being activated. Simply press the battery button 5 times quickly and the battery will be de-activated. Press quickly 5 more times to re-activate it for normal operation.

***eGo Batteries should only be charged with a proper eGo compatible charger (output rating should be 420mA).  Compatible chargers include: eGo/eGo-T/eGo-C USB Wire Charger.  Use of other chargers (even if the battery will fit the charger) will void warranty and may cause battery to fail, become defective, or even explode.