Abstract: A lithium rechargeable battery having a nonaqueous electrolyte held between a positive electrode and a negative electrode is provided. The lithium rechargeable battery has a high energy density and a high battery capacity by enhancing a filling factor of an active material of the positive electrode or the negative electrode. In the lithium rechargeable battery includes the positive electrode, the negative electrode, and the nonaqueous electrolyte held between the positive electrode and the negative electrode, the positive electrode or the negative electrode is comprised of a lithium titanate sintered body. The lithium titanate sintered body has a mean fine pore diameter of 0.10 to 0.20 ?m, a specific surface area of 1.0 to 3.0 m2/g, and a relative density of 80 to 90%.