The concept of a thermophysical battery for storing thermal energy is demonstrated. The battery provides heating and cooling for stationary and mobile applications. Energy storage mechanisms: adsorption-desorption and evaporation-condensation. Max. heating: 103 W/l and 65 W/kg; Max. Cooling: 78 W/l and 49 W/kg. Novel adsorbents further enhance performance for a compact and lightweight system.