Method and system for inspecting and separating battery

A system for inspecting and separating batteries, the system comprising:

• a battery inspector that determines which of a predetermined number of the batteries is a good battery;
• a battery separator that separates and discharges the predetermined number of the batteries;
• a good battery storage in which good batteries are temporarily stored;
• and
• a controller electrically connected to the battery inspector and the battery separator,
• wherein the controller:
• controls the battery inspector to determine which of the predetermined number of the batteries is a good battery;
• and
• controls the battery separator to:
• when not all of the predetermined number of the batteries are determined to be good batteries,
• receive another good battery temporarily stored in the good battery storage by a transfer, when it is possible to form a good battery group by receiving the another good battery temporarily stored in the good battery storage by the transfer;
• temporarily store a good battery among the predetermined number of the batteries by transferring the good battery to the good battery storage, when it is not possible to form the good battery group including only good batteries even by receiving the another good battery temporarily stored in the good battery storage by the transfer;
• and
• discharge the good battery group when the good battery group is formed,
• wherein a number of the good battery being temporarily stored is always less than the predetermined number to form the good battery group.