Beverage cooler and heater

A beverage heating and cooling-system comprising:

• a beverage coaster having a first end, an opposing second end, a housing, a metallic plate connected to the housing at the first end, a Peltier cell within the housing mechanically and thermally connected to the metallic plate, a first switch within the housing having a first position that results in cooling the metallic plate and a second position and that results in heating the metallic plate, a receiving coil located within the housing proximal to the second end, and coaster circuitry electrically connected to the Peltier cell, the switch, and the receiving coil;
• and
• a counter with a countertop having a top surface and a bottom surface, a magnet, a power source, a driving coil magnetically coupled with the receiving coil, a second switch within the countertop having a first position and a second position wherein the power source supplies power to the driving coil when the second switch is in the first position, and driver circuitry connected to the driving coil;
• wherein the position of the beverage coaster in relation to the counter determines whether the first switch is in the first position or second position and whether the second switch is in the first position or second position.