Portable Heating Pad Assembly

A portable heating pad assembly for on-demand heating of a seat of a vehicle or a stroller includes a housing, which defines an interior space. A battery, which is rechargeable, is positioned in the interior space. A power cord, which is operationally engaged to the battery, is attached to and extends from the housing. A plug of the power cord is engageable to a receptacle of a source of electrical current to charge the battery. A power cable, which is operationally engaged to the battery, is attached to and extends from the housing. A heating pad is operationally engaged to the power cable and can be selectively positioned on a seat of a vehicle and a seating surface of a stroller. The heating pad thus can warm a child seated in the seat of the vehicle or in the stroller.