MEGA EGO Battery is a long life Li-ion 3.7 volt 1100mAh rechargeable manual battery. The average to heavy user can get 10-14hrs of use from a fully charged battery. With the EGO USB Charger, it's approx. 3hrs to fully charge this battery. Will fit any EGO or 510 Clearomizer, Glassomizer, Atomizer, or Cartomizer.
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