Rechargeable battery heating unit

In a vessel incorporating a rechargeable battery heating unit;

• the combination of a vessel formed of dielectric material and an electric heating system integral therewith and comprising an electric circuit consisting of a heating coil, thermostat, on-off switch and rechargeable battery, said heating coil being molded in a bottom wall and in a side wall of said vessel, said thermostat, on-off switch and battery being contained within a compartment formed below said bottom wall by a removable bottom cap screwed thereon and sealed water tight by a rubber gasket, said battery being integral with plug means consisting of a pair of plug prongs, said prongs being pivotable about transverse pins, thereby allowing said prongs to be connected to a female receptacle of an extension electric cord for recharging said battery, said cap being made of semi-flexible plastic and includes a resilient, accordian boot integrally formed therethrough, an inner side of an end wall of said boot bearing against a push button of said on-off switch, and an outside of said boot end wall having an external button bearing thereagainst.