Abstract: A rechargeable electrochemical cell, made out of electrodes, which differ in the active material, installed in a canister. The electrodes are made of an expanded or woven metal mesh or foil substrate coated with pressed, not sintered nor resin bonded active material powder. One kind of the electrodes are wrapped in separators made of an insulating membrane, permeable to the ions of a suitable electrolyte. In order to ensure close contact, as needed, between the powder particles and the electrode substrate, during charging and discharging, the electrodes are installed in the can of the battery, which is providing the needed pressure distribution on the external surface. The can provides the counter pressure to the swelling of the active material and maintains the pressure despite the volume changes during the reaction. Some time in order to apply the needed pressure on the electrodes, other means can be utilized, as for instance an elastic rubber layer between the electrodes and can.