Beverage container heating apparatuses and associated methods for using such apparatuses are disclosed. In one embodiment, for example, a flexible band or sleeve is configured to wrap around an exterior surface of a beverage container. The flexible band can include a first layer configured to be positioned in contact with the exterior surface of the beverage container. The first layer comprises a reflective surface facing the beverage container and a heating element configured to provide heat to the exterior surface of the beverage container. The flexible band may also include a second layer adjacent to and covering at least a portion of the first layer. The second layer can include a removable insulation assembly. The flexible band further includes a third layer adjacent to and covering at least a portion of the second layer. The third layer can include various electronic components, such as a control circuitry and a battery.