An electrode for a battery includes an electrode sheet, a lead, and a
metal piece. The electrode sheet has a collector, an active material
layer formed on the collector, and a lead connecting portion which is
configured as an exposed extension of the collector, on both surfaces of
which the active material layer is not formed. The lead connecting
portion, the lead, and the metal piece are overlapped to and joined to
each other. With this configuration, even if a contact area between the
lead connecting portion and the lead is small, an electric resistance at
the joined portion between the lead connecting portion and the lead
becomes small, with a result that it is possible to enhance the strength
of the joined portion and to enhance the discharge load characteristic of
the battery.