NOVELTY - Chargeable circuitry (100) includes a dechargeable energy cell (130) comprising two electrochemically active elements, which are electronically separated from each other. An electrolyte is arranged in ionic contact with a portion of both electrochemically active elements. The energy cell is arranged to receive rectified current from a rectifier (120), and to convert the rectified current into stored energy by altering its electrochemical state in response to the rectified current.    USE - Chargeable circuitry for use in producing chargeable circuit element. Can also be used in charging energy cell.    ADVANTAGE - The chargeable circuitry is can be produced in a cost-effective manner by e.g. printing technique or reel-to-reel technique. It can be activated, charged, or interacted using any useful source of EM-radiation which is able to emit a suitable EM-field.    DETAILED DESCRIPTION - Chargeable circuitry (100) comprises an antenna (110) arranged to receive electromagnetic (EM)-radiation (190) from an external source and to convert it into electric energy. A rectifier (120) is arranged to receive electric energy from the antenna and convert the energy to a rectified current. A dechargeable energy cell (130) comprises two electrochemically active elements, which are electronically separated from each other. An electrolyte is arranged in ionic contact with a portion of both electrochemically active elements. The energy cell is arranged to receive rectified current from the rectifier, and to convert the rectified current into stored energy by altering its electrochemical state in response to the rectified current. INDEPENDENT CLAIMS are included for:    (1) chargeable circuit element comprising the circuitry carried by a first chargeable circuit element layer, which chargeable circuit element is arranged to be integrated in or on a target device;    (2) method of producing the chargeable circuit element; and    (3) method of charging a energy cell comprising emitting EM-radiation from the EM-radiation device within the receiving range the chargeable circuit, receiving the EM-radiation with the antenna of the chargeable circuit, converting the received EM-radiation to an rectified electric current with mechanism in the chargeable circuit, providing the rectified electric current to the energy cell, and altering the electrochemical state of the energy cell using the rectified electric current so that energy is stored in the cell.    DESCRIPTION OF DRAWING(S) - The drawing is a top view of an emitter of EM-radiation and a chargeable circuitry.    Chargeable circuitry (100)    Antenna (110)    Rectifier (120)    Dechargeable energy cell (130)    EM-radiation (190)