The Jupiter CCell Palm is a battery of its kind. It is styled in the oil cartridge mold and designed to accept a range of 510 threaded cartridges. It is made to be discreet and will easily and quietly squeeze into the palm of you hand. The piece is quite easy to use, as it allows draw activation firing capabilities and at the same time does not require the user to press any buttons. Once you receive the battery, you are advised to screw on to the cartridge via the magnetic adapter provided. The 550mAh battery is powerful enough to keep you on all day.