Patent ID: 7192671

Claim:
A battery comprising: a battery case including battery case opposing end regions and storing an electrolyte solution, one of said opposing end regions including a terminal connector having a connection cap and the other of said opposing end regions including bottom lid for said battery case; first and second current collectors which are fixedly disposed at said respective ones of said battery case opposing end regions so that one of said current collectors is structurally fixed to said connection cap of said terminal connector and the other of said current collectors is structurally fixed to said bottom lid of said battery case; a nonconductive roll core exterior surface and including roll core opposing ends which are structurally fixed to respective ones of said first and second current collectors and structurally fixed to ones of said connection cap of said terminal connector and said bottom lid of said case; an electrode plate group including plate group opposing end portions and comprising a positive plate, a negative plate and a separator disposed therebetween; an exposed edge of said positive plate and an exposed edge of said negative plate respectively extending from ones of said plate group opposing end portions; and said electrode plate group being wound around said roll core so that: said roll core opposing ends extend beyond respective ones of said plate group opposing end portions; and each of said edges of said positive and negative plate groups fixedly abut and electrically connect with respective ones of said current collectors.