A portable charging adapter system for charging a vaporizer device is described. In some embodiments, the system includes a charging adapter including a charging adapter housing. The charging adapter can include a charging dock positioned along a first surface of the charging adapter housing and a power coupling feature positioned along a second surface of the charging adapter housing. The portable charging adapter system can include a cap that includes a cap housing having an inner chamber. The cap can include a securing element coupled to the inner chamber having at least one cantilevered spring configured to engage the power adapter for securing a coupling of the cap to the charging adapter. Related device, systems, and methods are also described.