The JUUL Device comprises an indicator light that shows charge; an opening where you insert the JUULpod; and charging contacts on the bottom, that connect your device to the USB Charging Dock. The JUUL Device contains no user-serviceable parts, and the battery cannot be removed or altered by the consumer. The JUUL battery has limited charging capacity, designed with safety in mind. Our batteries and finished devices are put through rigorous testing to meet quality and safety standards.