METHOD FOR MANUFACTURING BATTERY AND METHOD FOR TESTING BATTREY

A method for manufacturing a battery includes steps of performing aging processing on multiple batteries, acquiring an inter-terminal voltage before the aging processing for the multiple batteries, acquiring an inter-terminal voltage after the aging processing for the multiple batteries, and determining, for each of the multiple batteries, whether the battery is defective. In the step of determining, a threshold is set based on inter-terminal voltage differences between the inter-terminal voltages before and after the aging processing for the multiple batteries, excluding at least one inter-terminal voltage difference.