Lithium flat battery consisting of a first housing part accommodating a
first thin-layer electrode, a second housing part accommodating a second
thin-layer electrode, and a separator placed between the electrodes,
wherein the housing parts of the battery are built of electrically
conductive, wherein the separator presents electrically insulating sealing
and bonding material in the area where both housing parts are in contact
with each other and wherein the housing parts are united by the sealing
and bonding material on the separator thus forming through him a closed
housing.