This Innokin iTaste LEO Pro 1000mAh battery for those that can’t recharge often, this battery will last a long time. The iTaste Leo Pro Battery features a no frills no extra options package. Standard 10 second shut off, 3 click battery off switch and a pass-through at the bottom of the battery allowing you to vape while charging. This is a fantastic low cost backup battery that can really help out in an emergency even if its not charged at all. Simply find the closest USB port, plug in and vape!