A portable baby bottle sterilization device includes a housing having disposed therein an inner lining defining a bottle sterilization cavity, wherein the bottle sterilization cavity includes an opening, and wherein the inner lining is configured to receive one or more baby bottles therein through the opening, a power source, a plurality of UV LEDs coupled to the power source and to the inner lining, wherein the plurality of UV LED configured to provide UV-C light within the bottle sterilization cavity, and a processor coupled to the power source and to the plurality of UV LEDs, wherein the processor is configured to control intensity and duration of the UV-C light within the bottle sterilization cavity, and a cover coupled to the housing, wherein the cover is repositionable relative to the housing, wherein the cover can be positioned to removably cover the opening of the bottle sterilization cavity.