Highly reliable and durable battery and process for fabrication thereof

摘要

A battery is fabricated on the basis of at least one of the following four concepts, i.e., lead terminals (51j/ 52j) passing through a package (1) not lower than the uppermost surface of an electrolyte cell (3a), lead terminals projecting from a package in directions opposite to each other, a film package with a crushed portion expandable for accumulating gas and sheets of gas barrier sealant for keeping the boundaries between component parts of a package sealed; the seal is hardly broken so that the battery is durable and highly reliable.