To provide a sealed lead acid battery with positive and negative electrode plates wound together with a separator to form an element for preventing gaps in an interface between a lattice bar and an active material and the falling active material, hardly causing short-circuiting due to the elongation of the plates and offering a long service by improving retention of the active material.

The battery has the positive and negative electrode plates formed of lead or lead alloy and wound together with the separator to form the element. The face of the lattice bar at its gently curved corner or the face of the lattice bar contacting a punching mold during punching is located inside the wound element.