Abstract: A portable thermal device includes a housing having a thermally conductive container accessible through an opening. Batteries are contained in the housing. A power supply circuit is in electrical communication between an electrical heater and batteries contained in the to power the electrical heater. In one aspect, an electrical heater uses metal oxide semiconductor field effect transistors (MOSFETs) in thermal contact with the thermally conductive container that are driven in a heat generating range by the power supply circuit. In another aspect, a controller: (i) identifies a thermal profile associated for preparing and maintaining a particular food in the thermal conductive container; (ii) associates the thermal profile with stored power in the one or more batteries; and (iii) communicates via a user interface a limitation on performing the thermal profile based on the stored power.

Abstract: A portable thermal device includes a housing having a thermally conductive container accessible through an opening. Batteries are contained in the housing. A power supply circuit is in electrical communication between an electrical heater and batteries contained in the to power the electrical heater. In one aspect, an electrical heater uses metal oxide semiconductor field effect transistors (MOSFETs) in thermal contact with the thermally conductive container that are driven in a heat generating range by the power supply circuit. In another aspect, a controller: (i) identifies a thermal profile associated for preparing and maintaining a particular food in the thermal conductive container; (ii) associates the thermal profile with stored power in the one or more batteries; and (iii) communicates via a user interface a limitation on performing the thermal profile based on the stored power.

Abstract: The present invention provides for a portable, wireless and rechargeable heating container (HC) that allows an individual to warm up food. The heating of the food is achieved through an electric heating system powered by the accumulators and controlled by an electronic circuit. HC can heat up the food or drink, up to 40 degrees Celsius (104° Fahrenheit). HC can be used for multiple complete heating cycles on one charging. It contains an on and off switch to activate heating mechanism and an LED indicator for the accumulators, heating and charging status. HC can include a Wi-Fi, BLUETOOTH chip, or any other wireless solution that will enhance its versatility and mobility, allowing it, for example, to access the Internet from a plurality of access points. For purposes of such communication, device preferably includes either or both a wired communications port and a wireless communications port. The system makes it perfect for frequent traveling, outdoors activities and work.