Abstract: A method of making a rechargeable battery having excellent high current discharge efficiency by preparing a positive pole from an aluminum strip, a negative pole from a copper strip and two isolation membranes first. Then cover the positive pole and the negative pole respectively with a positive pole material film and a negative pole material film so that a bare aluminum zone is defined on the positive pole and a bare copper zone is defined on the negative pole. Then rolling up the positive pole, an isolation membrane, the negative pole and the other isolation membrane, which are orderly arranged in a stack into a multilayer roll so that the bare aluminum zone and the bare copper zone be respectively positioned at top and bottom sides of the multilayer roll. Then weld two conducting poles to the bare aluminum zone and the bare copper zone respectively. Finally, package the multilayer roll in a housing and fill an electrolyte solution in the housing.

Abstract: A method of making a rechargeable battery having excellent high current discharge efficiency by preparing a positive pole from an aluminum strip, a negative pole from a copper strip and two isolation membranes first. Then cover the positive pole and the negative pole respectively with a positive pole material film and a negative pole material film so that a bare aluminum zone is defined on the positive pole and a bare copper zone is defined on the negative pole. Then rolling up the positive pole, an isolation membrane, the negative pole and the other isolation membrane, which are orderly arranged in a stack into a multilayer roll so that the bare aluminum zone and the bare copper zone be respectively positioned at top and bottom sides of the multilayer roll. Then weld two conducting poles to the bare aluminum zone and the bare copper zone respectively. Finally, package the multilayer roll in a housing and fill an electrolyte solution in the housing.