Wireless chargeable energy cell

The invention provides a circuitry and an element which can be activated, charged or interacted with using any useful source of EM-radiation which is able to emit a suitable EM-field, which circuitry or element can be produced in a cost-effective manner, as well as a method for charging the same. The circuitry or element comprises: - antenna for receiving and converting EM-radiation into electric energy; - a rectifier for converting the energy to a rectified current; - a dechargeable energy cell comprising: a first and a second electrochemically active element, which are electronically separated from each other, an electrolyte which is arranged in ionic contact with at least a portion of both said first and and second electrochemically active element, wherein said energy cell is arranged to receive rectified current from said rectifier, and to convert said recified current into stored energy by altering its electrochemical state in response to said rectified current.