A nano cathode material usable for batteries and a method for preparing the same are provided. The cathode material is comprised of nano particles so that the specific surface area of such particles is increased, thereby allowing a suitable size distributi...

A lithium ion battery (100) includes a cell assembly (20), a casing (200) containing the cell assembly with electrolyte filling therein, a cap assembly (300) a retaining member (50) and an insulator (70). The cell assembly comprises a number of stacked ele...

A lithium ion battery (100) includes a cell assembly (20), a casing (10) containing the cell assembly, a cap assembly and electrolyte filling in the casing. The cell assembly has stacked electrode plates (21, 22) with separators (23) disposed between neigh...

A battery module (100, 200) includes a top bracket (11, 31), a bottom bracket (12, 32), a number of batteries clamped by the top and bottom brackets, and an insulative cover (14) fixed to a top side of the top bracket. The top bracket includes a number of ...